Melexis MLX90601 Technical data

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Features and Benefits

• Remote temperature measurement

• Fully linearized signals

• Analog voltage output, digital PWM output and SPI interface

• Factory calibrated

• Rigid PCB with automotive protection circuitry, or flex circuit board.

• EEPROM ECC

• Open drain relay driver output

Applications

• Automotive climate control

• Toasters, microwave ovens and other applications that require temperature control

• Residential, commercial climate control and occupancy detection

• Industrial temperature transducer and monitoring applications

MLX90601 family

IR thermometer modules

Ordering Information

Suffix

Part No Ta Package Type Description PCB

MLX90601 E ZA BAA 8 bit Analog To –20C /120C, Ta 0C..50C Rigid MLX90601 E ZA DAA PWM, To –20C /120C, Ta 0C..50C Rigid MLX90601 E ZA CAA Digital SPI/PWM To –20C/120C, Ta 0C..50C, 5V supply Rigid MLX90601 K ZA BKA 8 bit Analog To –20C /120C, Ta –20C..85C, 5V supply Flex MLX90601 K ZA CKA Digital SPI/PWM To –20C/120C, Ta -20C..85C, 5V supply Flex Notes: Ta ambient operating temperature range MLX90601EZA-XXX: -40C / +85C MLX90601KZA-XXX: -40C / +125C

1 Functional Diagrams

MLX90247

Rsens

VSS

VDD

C3

TEMPOUT

IROUT

CS

SCLK

SDI

SDO

REL1 REL

VREFP VREF

MLX90247

Rsens

VSS

IR+

IRINP

IR-

IRINN

TINP

TINN

MLX90313

CREF VSS

R3

IR+

IR-

IRINP

IRINN

TINP

TINN

MLX90313

CREF VSS

R3

VDD

IROUT

TEMPOUT

REL1

R1D

R1C

5V

C3

IROUT

C6

TEMPOUT

C7

REL1

VSS/GND

5V

TEMPOUT

IROUT

CS SCLK DIN DOUT

VSS/GND

MLX90601 EZA-BAA MLX90601 EZA-CAA MLX90601 EZA-DAA MLX90601 KZA-BKA

MLX90601 KZA-CKA

3901090601 Page 1 of 49 Aug/02 Rev. 007

2 Description

The MLX90601 Family modules are versatile IR thermometer modules, which perform signal conditioning, linearisation and ambient temperature compensation. The modules are built around the MLX90313 IR sensor interface, which uses high performance chopper stabilized amplifiers, providing excellent noise performance. The sensing element is the MLX90247 discrete IR thermopile sensor. The modules are delivered factory calibrated. The output signals can be analog voltage outputs; PWM coded digital outputs, or a bidirectional SPI compatible serial interface. All output signals are linear with the applied temperature.

All modules feature the open drain relay driver output available in MLX90313. Several types of modules are available. First types are the modules for automotive applications, which have additional ESD protection circuitry on board. These modules can

MLX90601 family

IR thermometer modules

have an analog voltage output (MLX90601EZABAA), or a digital PWM coded output (MLX90601EZA-DAA). The substrate is in this case a FR4 PCB with a 5 pin through-hole connector. Alternatively there are some modules targeted for industrial or consumer applications. These modules can have also analog outputs (MLX90601KZA-BKA) or PWM outputs (MLX90601KZA-CKA and MLX90601EZA-CAA). All three modules have a SPI interface available for full programmability.

The MLX90601KZA-BKA and MLX90601KZACKA are built on a flexible polyamide substrate, making building in the sensor very easy.

The user can choose now the most suited module depending on electrical and mechanical needs.

3901090601 Page 2 of 49 Aug/02 Rev. 007

MLX90601 family

IR thermometer modules

CONTENTS

1 FUNCTIONAL DIAGRAMS ..............................................................................................................1

2 DESCRIPTION................................................................................................................................. 2

3 GLOSSARY OF TERMS ..................................................................................................................5

4 ABSOLUTE MAXIMUM RATINGS...................................................................................................6

5 MLX90601 ELECTRICAL SPECIFICATIONS...................................................................................6

6 GENERAL DESCRIPTION............................................................................................................... 8

6.1 T

6.2 S

6.3 A

7 MLX90601EZA-BAA ...................................................................................................................... 10

7.1 K

7.2 G

7.3 P

7.4 PIN-

7.5 E

7.6 C

7.7 A

8 MLX90601EZA-DAA ...................................................................................................................... 15

8.1 K

8.2 G

8.3 P

8.4 PIN-

8.5 E

8.6 C

8.7 A

9 MLX90601EZA-CAA ...................................................................................................................... 21

9.1 K

9.2 G

9.3 S

9.4 P

9.5 PIN-

9.6 E

9.7 C

9.8 A

10 MLX90601KZA-BKA...................................................................................................................... 30

10.1 K

10.2 G

10.3 S

10.4 P

10.5 PIN-

10.6 E

10.7 C

3901090601 Page 3 of 49 Aug/02 Rev. 007

HEORY OF OPERATION

ENSOR CHARACTERISTICS CCURACY

EY PROPERTIES

ENERAL DESCRIPTION

HYSICAL OUTLINE

LECTRICAL SPECIFICATIONS ALIBRATION DETAILS PPLICATIONS INFORMATION

EY PROPERTIES

ENERAL DESCRIPTION

HYSICAL OUTLINE

LECTRICAL SPECIFICATIONS ALIBRATION DETAILS PPLICATIONS INFORMATION

EY PROPERTIES

ENERAL DESCRIPTION ERIAL PERIPHERAL INTERFACE HYSICAL OUTLINE

LECTRICAL SPECIFICATIONS ALIBRATION DETAILS PPLICATIONS INFORMATION

EY PROPERTIES

ENERAL DESCRIPTION ERIAL PERIPHERAL INTERFACE HYSICAL OUTLINE

LECTRICAL SPECIFICATIONS ALIBRATION DETAILS

.................................................................................................................................. 8

OUT AND PIN DESCRIPTIONS

................................................................................................................ 8

...........................................................................................................8

....................................................................................................................... 10

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..................................................................................................................... 12

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.................................................................................................. 12

.................................................................................................. 18

(SPI)......................................................................................... 23

.................................................................................................. 26

(SPI)......................................................................................... 32

.................................................................................................. 35

MLX90601 family

IR thermometer modules

10.8 A

11 MLX90601KZA-CKA...................................................................................................................... 38

11.1 K

11.2 G

11.3 S

11.4 P

11.5 PIN-

11.6 E

11.7 C

11.8 A

12 ESD PRECAUTIONS...................................................................................................................... 46

PPLICATIONS INFORMATION

EY PROPERTIES

ENERAL DESCRIPTION ERIAL PERIPHERAL INTERFACE HYSICAL OUTLINE

OUT AND PIN DESCRIPTIONS LECTRICAL SPECIFICATIONS ALIBRATION DETAILS PPLICATIONS INFORMATION

....................................................................................................................... 38

..................................................................................................................... 43

....................................................................................................... 37

.............................................................................................................. 38

...................................................................................................... 44

................................................................................................................. 45

....................................................................................................... 45

(SPI)......................................................................................... 40

.................................................................................................. 43

13 RELIABILITY INFORMATION........................................................................................................ 46

14 FAQ................................................................................................................................................ 46

15 APPENDIX A: SPI INTERFACING TO AUTOMOTIVE MODULES................................................. 48

15.1 C

15.2 SPI C

OMPONENT REFERENCES

OMMUNICATION CABLE PIN-OUT

.......................................................................................................... 48

........................................................................................... 48

3901090601 Page 4 of 49 Aug/02 Rev. 007

3 Glossary of Terms

ADC: Analog to Digital Converter Ambient Compensation: The IR signal

captured by a thermopile sensor is not only dependent on the temperature of the object (Tobject) but also on the temperature of the sensor itself. Therefore the IR signal is compensated for this effect by means of the measured sensor temperature (Tambient). This rather complex calculation is performed in the linearisation unit of MLX90313.

Chopper Amplifier: Special amplifier configuration aimed at ultra low offset.

DAC: Digital to Analog Converter. EEPROM: Non-volatile memory that can be

electrically erased and rewritten. This type of memory is used to store configuration and calibration data for the module.

ECC: Error Checking and Correction. The EEPROM on board of MLX90313 is equipped with a checking and correction feature based on the Hamming Code method.

IR: Infrared. Every object emits infrared radiation in relation to its temperature. This effect can be used to measure this temperature without the need for physical contact.

Linearisation: The signal from a thermopile is not linear with the object temperature. MLX90313 is therefore equipped with a digital calculation unit that produces an output that is linear with the object temperature.

POR: Power-on reset: Reset circuit that starts the digital system in a known state whenever the supply voltage is cycled

PSSR: Power Supply Rejection Ratio: Measure for an amplifier’s immunity to disturbances on the supply connections.

PTC: See Thermistor Ta, Tambient: The temperature of the IR

sensor. Target: or Object: The object the IR module is

aimed at.

MLX90601 family

IR thermometer modules

Thermistor: Temperature dependant resistor. Basically there are 2 types. The types that increase their resistance with rising temperature are PTC (positive thermal coefficient) type. The ones that decrease their resistance with rising temperature we call NTC (negative thermal coefficient) type. The MLX90313 can work with both types. The MLX90601 modules are equipped with sensors that use PTCs. To, Tobject: The temperature of the object one wishes to measure with the module

3901090601 Page 5 of 49 Aug/02 Rev. 007

MLX90601 family

IR thermometer modules

4 Absolute Maximum Ratings

Automotive Grade modules

MLX90601EZA-BAA – MLX90601EZA-DAA

Voltage, VDD (over-voltage) 80V Supply Voltage, VDD (operating) 5.5V Supply Current, IDD 6mA Operating Temperature Range, TA ESD Sensitivity (AEC Q100 002) 4kV

PCB SPI module

MLX90601EZA-CAA

Voltage, VDD (over-voltage) 7V Supply Voltage, VDD (operating) 5.5V Supply Current, IDD 6mA Operating Temperature Range, TA ESD Sensitivity (AEC Q100 002) 1kV

Exceeding the absolute maximum ratings may cause permanent damage. Exposure to absolutemaximum rated conditions for extended periods may affect device reliability.

-40°C / 105°C

Flexible modules

MLX90601KZA-CKA – MLX90601KZA-BKA

Voltage, VDD (over-voltage) 7V Supply Voltage, VDD (operating) 5.5V Supply Current, IDD 6mA Operating Temperature Range, TA ESD Sensitivity (AEC Q100 002) 1kV

-40°C / 125°C

5 MLX90601 Electrical Specifications

DC Operating Parameters TA = -40oC to 125oC, VDD = 4.75V to 5.25V (unless otherwise specified)

Parameter Symbol Test Condition Min Typ Max Unit

Regulator and consumption

POR threshold voltage Vpor 1.1 1.3 1.5 V

IR-chain amplifier and output driver

Power supply rejection ratio Input referred white noise Vnir rms-value 25

Chopper frequency fc 8 kHz Output voltage range IROUT 0 Vdd-0.2 V Output source current Iod IROUT 1 mA Output sink current Ios IROUT 20 uA DC Output impedance, drive DC Output impedance, sink Amplifier bandwidth BW 500 Hz

Temp-chain amplifier and output driver

Power supply rejection ratio Input referred white noise Vntemp rms-value 400

Chopper frequency fc 15 kHz Output voltage range ORtemp TEMPOUT 0 Vdd-0.2 V Output source current Iod TEMPOUT 1 mA Output sink current Ios TEMPOUT 20 uA

PSSR

rod IROUT 10 ros IROUT 100

PSSR

f ≤ 100kHz

75 dB

nV/√Hz

Ω Ω

nV/√Hz

3901090601 Page 6 of 49 Aug/02 Rev. 007

MLX90601 family

IR thermometer modules

5 MLX90601 Electrical Specifications

DC Operating Parameters TA = -40oC to 125oC, VDD = 4.75V to 5.25V (unless otherwise specified)

Parameter Symbol Test Condition Min Typ Max Unit

AC Output impedance ro TEMPOUT 100 Amplifier bandwidth BW 500 Hz

Rel1 open drain relay driver

High voltage protections 32 V output impedance Ro 10

ADC

Monotonic guaranteed by design Differential non-linearity DNL 0.4 LSB Integral non-linearity INL ½ LSB Gain error full scale 1 LSB Total input-referred noise Vref=3V 0.2 LSB

DAC

Resolution 8 bit Monotonic guaranteed by design Differential non-linearity DNL ½ LSB Integral non-linearity INL ½ LSB

PWM

PWM Clock period Tclk 45 50 55 PWM Total period T 92.16 102.4 112.64 ms Leading buffer time t1 % of T 12.5 Trailing buffer time t5 % of T 12.5 Duty cycle high t2 % of T 0 50 % Duty cycle low t3 % of T 0 50 % Error signal t4 % of T 25 Rise time* 10% to 90% of Vh 13.3 100 Fall time* 90% to 10% of Vh 13.3 100 Output voltage high Vh Ihigh=2mA 4 V Output voltage low Vl Ilow=2mA 1 V *Without external loading

Ω

µs

% %

%

µs µs

3901090601 Page 7 of 49 Aug/02 Rev. 007

MLX90601 family

IR thermometer modules

6 General Description

6.1 Theory of operation

The MLX90601 modules are developed especially to make IR temperature sensing easy. All modules have a linearised output signal. Also they are factory calibrated, so making all modules interchangeable. Also this relieves customers from complex calibration procedures.

All modules have a MLX90247 thermopile sensor as IR sensing element. The output of this sensor is a function of both Object (IR) and ambient temperature. Ideally the output voltage of the thermopile sensor is:

α

Where To is Object temperature in Kelvin, and Ta is the ambient temperature in Kelvin. Alpha is a device constant. It is clear from above equation that the ambient temperature must be known before the object temperature can be calculated. Therefore the MLX90247 thermopile sensor has a thermistor built-in. Melexis has designed a powerful ASIC to perform the signal processing of the thermopile output voltage. MLX90313 amplifies the signals coming from MLX90247 and converts them to digital by means of two high performance, low noise, chopper stabilized amplifiers and the 12-bit analog to digital converter. The digital unit on the interface then performs the ambient compensation of the IR signal. This results in two temperature signals, one representing the temperature of the object the IR sensor is pointed at (Tobject) and one representing the temperature of the sensor (Tambient). Both signals are then linearised and presented at the outputs in analog of PWM coded form. When using modules that have also SPI, the temperature registers can be read directly through the serial interface.

The linearisation unit can only operate when both Ta (ambient temperature) and To (object temperature) are both in a distinct calibrated range. This has an important implication for the ambient temperature. When the modules are used outside the calibrated ambient temperature, the object temperature is calculated using a false ambient temperature, resulting in an erroneous output signal. If the ambient temperature is below the ambient calibration range, the OVL flag in the SPI register is set and the temperature data bits are all zero. For analog output modules, the output will be zero volts. Alternatively, if the ambient temperature is above the ambient calibration range, the OVH flag in the SPI register is set and the temperature data bits are all one. For analog output modules, the output will be 4.5 volts. When returning into calibrated ambient temperature range, the module will resume normal operation.

Our standard products have such ranges that they can suit a maximum number of applications. Currently there are four different versions of modules offered.

44

)(

TaToVir −=

6.2 Sensor characteristics

All modules have the same thermopile sensor. For detailed specification we refer to the datasheet on MLX90247, available from the Melexis web site. In a calibrated module the linearisation unit of MLX90313 takes all characteristics of the sensor into account, including all process variations they are subject to.

The TO-39 sensor housing of the thermopile has a 2.5mm diameter aperture, resulting in a 70° full angle field of view, for 90% % of the IR energy. The silicon filter used as IR-window is treated with an

antireflective coating that will pass minimum 75% of IR radiation in the wave length band from 7.5µm to

13.5µm.. Below 5µm, 99.5% of incoming radiation is reflected by the filter. This makes the sensor insensitive to visible light.

6.3 Accuracy

Accuracy of the module depends mainly on calibration precision. For absolute accuracy please refer to calibration details for the appropriate module. The error of the output depends on both object and ambient temperature. Repeatability and stability are very good, the error is < 0.4C, but both ambient and object

3901090601 Page 8 of 49 Aug/02 Rev. 007

MLX90601 family

IR thermometer modules

temperature must be kept stable. For making relative measurements care must be observed. The MLX90313 uses a piecewise modified quadratic approximation method, and on the reference points, the output can change with several tenths of degrees. Of course, the absolute accuracy will always be within specification.

3901090601 Page 9 of 49 Aug/02 Rev. 007

MLX90601 family

5.4

IR thermometer modules

7 MLX90601EZA-BAA

7.1 Key properties

• Automotive use

• analog output signals with 8 bit resolution

• relay comparator

• only 5 connections

7.2 General description

The MLX90601EZA-BAA is a module that is targeted for automotive use. In addition to the small amount of components like the sensor, ASIC etc there are also 2 RC protection circuits on the IROUT and TEMPOUT pins. This allows the module to be used in automotive environments.

The Object temperature information is available at the IROUT pin. The ambient temperature information is available on the TEMPOUT pin. The resolution of the output D/A converter is 8bit. The output drivers have a maximum output voltage of 4.5V when the maximum calibrated temperature is reached.

If the ambient temperature is out of the calibrated temperature range, the correct object temperature cannot be calculated. For applications where the ambient temperature can rise above the maximum calibrated temperature, the ambient temperature output must be monitored to make sure the object temperature is valid.

Next to the temperature outputs there is also a relay driver output. The relay driver has a threshold that is pre-set to 50 °C, with a hysteresis of 5 °C. Note that this module has no SPI interface connector available. If the user wants to reconfigure this type of module, this can be done with the EVB board and a special test clip. Refer to appendix A for details.

The relation of the output voltage to the temperature is defined as follows:

Vout

T +−= *

( )

TminTminTmax

where:

T measured temperature Vout analog output voltage on IROUT or TEMPOUT pins. Tmin minimal calibrated temperature Tmax maximum calibrated temperature

Refer to calibration details for calibrated ranges info

3901090601 Page 10 of 49 Aug/02 Rev. 007

MLX90601 family

IR thermometer modules

A graphical representation is depicted below.

IROUT output voltage

versus

Object Temperature

4.5

4

3.5

3

2.5

2

1.5

Output Voltage IROUT (V)

1

0.5

0

-40 110 1201008060200-20

40

Object Temperature To (degC)

The behavior of the module outside the calibrated ranges is shown below:

TEMPOUT output voltage

Output Voltage TEMPOUT (V)

versus

Ambient Temperature

4.5

4

3.5

3

2.5

2

1.5

1

0.5

0

Ambient Temperature Ta (degC)

500

T object in range

T ambient in range

I I

II I

I or II II

I or II III

-20C

III II

120C

III II IIIIII

50C0C-40C 105C

Tobject

Tambient

Module operating conditions

Effect on outputs

Object temperature output is working normal Ambient temperature output is working normal

Object temperature output will be clamped 0V (To < -20C) or clamped at 4.5V (T0>120C). Ambient temperature output is working normal

BOTH temperature outputs will be clamped 0V (Ta < 0C) or clamped at 4.5V (Ta>50C).

The module may be damaged if operated outside the ambient temperature range.

BOTH temperature outputs will be clamped 0V (Ta < 0C) or clamped at 4.5V (Ta>50C).

3901090601 Page 11 of 49 Aug/02 Rev. 007

7.3 Physical outline

MLX90601 family

IR thermometer modules

7.4 Pin-out and pin descriptions

pin-out information

pin name function

1 IROUT analog output infrared temperature 2 TEMPOUT analog output ambient temperature 3 VDD Supply voltage 4 REL1 Relay output 5 VSS Ground connection

IROUT IRout analog voltage output pin. The voltage at this pin is a linear representation of Tobject,

the temperature of the object the IR sensor is pointed at.

TEMPOUT Ambient temperature analog voltage output pin. The voltage at this pin is a linear

representation of Tambient, the temperature of the IR sensor, as measured by the PTC

inside MLX90247. VDD Supply pin REL1 Open drain relay driver output. The typical on-resistance of this driver is <10 Ohms.

REL1

Tobject

COMP

Threshold in

EEPROM

VSS

Hysteresis

in EEPROM

3901090601 Page 12 of 49 Aug/02 Rev. 007

MLX90601 family

IR thermometer modules

The comparator is a digital comparator, with a resolution of 12 bits. By default the input

polarity is inverting. Threshold and hysteresis values are version dependent. These

settings can be changed by factory programming on request. Refer to calibration settings

for factory preset values. VSS Supply pin (0V)

7.5 Electrical specifications

Parameter symbol condition min typ max unit

Supply Voltage

Supply voltage range VDD 4.75 5 6 V Power consumption IDD Ta=25C 5 5.6 mA

analog outputs IROUT/TEMPOUT

D/A converter resolution 8 Bits Output source current Iod 1 mA Output sink current Ios 20 uA AC Output impedance ro 100 Capacitive load Cmax 100 nF

Rel1 open drain relay driver

output impedance Ro 10 Ohms High voltage protections 32 V

Ω

7.6 Calibration details

Maximum calibrated object temperature 120°C Minimum calibrated object temperature -20°C Object temperature Accuracy ±2°C Maximum calibrated ambient temperature 50°C Minimum calibrated ambient temperature 0°C Ambient temperature Accuracy ±1°C Response time 500ms REL1 source Tobject REL1 polarity (*) Inverting REL1 threshold 50°C REL1 hysteresis 5°C Emissivity 0.99

Note: Comparator polarity: Inverting: relay switches OFF if temperature is above the threshold. Non-inverting: relay switches ON if temperature is above the threshold.

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MLX90601 family

IR thermometer modules

7.7 Applications information

Connection of the MLX90601 module into an application is straightforward. The 5V regulated supply should be connected between pin 3 (VDD) and pin 5 (VSS). The outputs can be measured relative to VSS at pin 1 (IROUT) for Tobject and pin 2 (TEMPOUT) for Tambient, e.g. by means of a voltmeter. In an actual application the module outputs can be directly connected to the A/D inputs of a microcontroller, e.g. as a replacement for a conventional temperature sensor. In many applications, the ambient temperature of the sensor is not needed. In this case, pin 2 can simply be left open. The REL1 signal at pin 4 can be used as input for a digital I/O or to drive a relay (not shown). In case of a digital input the microcontroller must have internal pull-up resistors or an external pull-up resistor must be added.

IR sensor

Thermisto

MLX90247

IR+

IR-

r

Rsens

VSS

IRINP

IRINN

TINP

TINN

OPA

A/D

Digital

A/D

D/A

D/A Ta

MLX90313

Ta

To

COMP12

TEMPOUT

IROUT

REL1

2

1

4

Application

Microcontroller

A/D input (optional)

A/D input

Digital input

MLX90601B

EEprom, Control and Support Blocks

VSS

VDDCREF

3

5V

5

VSS

3901090601 Page 14 of 49 Aug/02 Rev. 007

MLX90601 family

8

16

IR thermometer modules

8 MLX90601EZA-DAA

8.1 Key properties

• Automotive use

• PWM coded output signals with 10 bit resolution

• ambient temperature underflow and overflow flagging

• relay comparator

• only 5 connections

8.2 General description

The MLX90601EZA-DAA is a module that is targeted for automotive use. In addition to the small amount of components like the sensor, ASIC etc there are also 2 RC protection circuits on the IROUT and TEMPOUT pins. This allows the module to be used in automotive environments.

The Object temperature information is available at the IROUT pin. The ambient temperature information is available on the TEMPOUT pin. The resolution of the Pulse Width Modulated output is 10 bits. Next to the temperature information, these outputs can also flag ambient temperature underflow and overflow. The module has an on-board ECC (EEPROM consistency check), that checks the stored calibration constants and settings. In case of failure, the output fill flag this condition.

If the ambient temperature is out of the calibrated temperature range, both PWM signals will flag this condition, and the object and ambient temperatures will not be available until the ambient temperature is back in the calibrated temperature range.

Next to the temperature outputs there is also a relay driver output. The relay driver has a threshold that is pre-set to 50 °C, with a hysteresis of 5 °C. Note that this module has no SPI interface connector available. If the user wants to reconfigure this type of module, this can be done with the EVB board and a special test clip. Refer to appendix A for details.

The PWM coding format is depicted below

t4:Error Signaling Band

Valid Data Output Band

FE

OVH

output signal

t

1

T

The PWM signal has a period of 102.4ms typical consisting of 2048 clock cycles of 50µs. Every frame starts with a leading buffer time, t1, during which the signal is always high, as shown in the figure. The leading buffer time is followed by a slot for the useful data signal starting at 1/8T ending at 5/8T, where the ratio t2/(t2+t3) is the representation of the output value. t4 is a slot for signaling of special conditions, such as out of range measurement of the sensor temperature, Tambient and the occurrence of a fatal EEPROM error, i.e. an error that can no longer be corrected automatically by the ECC circuitry of MLX90313.

3901090601 Page 15 of 49 Aug/02 Rev. 007

t

2

t

3

5

OVL

t

5

time

T

16

12

11

13

7

T

T0

MLX90601 family

−

%

50

IR thermometer modules

PWM duty cycle overview

Condition Duty cycle nominal timing Normal operation 12.5% - 62.5% 12.8 ms - 64 ms OVL: Tambient underflow 68.75 % 70.4 ms OVH: Tambient overflow 75 % 76.8 ms FE: Fatal Error EEPROM 81.25% 83.2 ms

The relation of the output voltage to the temperature is defined as follows:

DutyCycle

T +−

= *

where:

T measured temperature DutyCycle Duty Cycle of the IROUT or TEMPOUT PWM signals. Tmin minimal calibrated temperature Tmax maximum calibrated temperature

Refer to calibration details for calibrated ranges info A graphical representation is depicted below.

IROUT PWM

versus

Object Temperature

%5.12

( )

TEMPOUT PWM

Ambient Temperature

TminTminTmax

versus

62.5

50

37.5

Duty Cycle IROUT (%)

25

12.5

-20 120

Object Temperature To (degC)

75

62.5

50

37.5

Duty Cycle TEMPOUT (%)

25

12.5 0 50

Ambient Temperature Ta (degC)

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MLX90601 family

IR thermometer modules

The behavior of the module outside the calibrated ranges is shown below:

T object in range

I I

II I

I or II II

I or II III

T ambient in range

III II

-20C

120C

III II IIIIII

50C0C-40C 105C

Module operating conditions

Effect on outputs

Object temperature output is working normal Ambient temperature output is working normal

Object temperature output duty cycle will be 12.5% if To < -20C, or 62.5% if To > 120C. Ambient temperature output is working normal

BOTH temperature outputs duty cycle will be 68.75% if Ta < 0C, or 75% if Ta > 50C.

The module may be damaged if operated outside the ambient temperature range.

BOTH temperature outputs duty cycle will be 68.75% if Ta < 0C, or 75% if Ta > 50C.

Tobject

Tambient

8.3 Physical outline

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MLX90601 family

IR thermometer modules

8.4 Pin-out and pin descriptions

pin-out information

pin Name function

1 PWM output infrared temperature 2 PWM output ambient temperature 3 Supply voltage 4 Relay output 5 Ground connection

IROUT IRout PWM coded output pin. The duty cycle of the signal on this pin is a linear

representation of Tobject, the temperature of the object the IR sensor is pointed at.

TEMPOUT Tempout PWM coded output pin. The duty cycle of the signal on this pin is a linear

representation of Tambient, the temperature of the IR sensor, as measured by the PTC

inside MLX90247. VDD Supply pin REL1 Open drain relay driver output. The typical on-resistance of this driver is <10 Ohms.

REL1

Tobject

COMP

Threshold in

EEPROM

VSS

Hysteresis

in EEPROM

The comparator is a digital comparator, with a resolution of 12 bits. By default the input

polarity is inverting. Threshold and hysteresis values are version dependent. These

settings can be changed by factory programming on request. Refer to calibration settings

for factory preset values. VSS Supply pin (0V)

8.5 Electrical specifications

Parameter symbol condition min typ max unit

Supply Voltage

Supply voltage range VDD 4.75 5 6 V Power consumption IDD Ta=25C 5 5.6 mA

outputs IROUT/TEMPOUT

PWM modulator resolution 10 bits PWM Clock period Tclk 45 50 55 PWM Total period T 92.16 102.4 112.64 ms Leading buffer time t1 % of T 12.5 Trailing buffer time t5 % of T 12.5 Duty cycle high t2 % of T 0 50 %

µs %

%

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IR thermometer modules

Parameter symbol condition min typ max unit

Duty cycle low t3 % of T 0 50 % Error signal t4 % of T 25 Rise time* 10% to 90% of Vh 13.3 100 Fall time* 90% to 10% of Vh 13.3 100 Output voltage high Vh Ihigh=2mA 4 V Output voltage low Vl Ilow=2mA 1 V

Rel1 open drain relay driver

output impedance Ro 10 Ohms High voltage protections 32 V * no external load

8.6 Calibration details

Maximum calibrated object temperature 120°C Minimum calibrated object temperature -20°C Object temperature Accuracy ±2°C Maximum calibrated ambient temperature 50°C Minimum calibrated ambient temperature 0°C Ambient temperature Accuracy ±1°C Response time 500ms REL1 source Tobject REL1 polarity (*) Inverting REL1 threshold 50°C REL1 hysteresis 5°C Emissivity 0.99

Note: Comparator polarity: Inverting: relay switches OFF if temperature is above the threshold. Non-inverting: relay switches ON if temperature is above the threshold.

%

µs µs

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8.7 Applications information

Connection of the MLX90601 module into an application is. The 5V regulated supply should be connected between pin 3 (VDD) and pin 5 (VSS). In an actual application the module outputs can be directly connected to a timer or IRQ inputs of a microcontroller. In many applications, the ambient temperature of the sensor is not needed. In this case, pin 2 can simply be left open. The REL1 signal at pin 4 can be used as input for a digital I/O or to drive a relay (not shown). In case of a digital input the microcontroller must have internal pull-up resistors or an external pull-up resistor must be added.

IR sensor

Thermisto

MLX90247

IR+

IR-

r

Rsens

VSS

IRINP

IRINN

TINP

TINN

OPA

A/D

Digital

A/D

D/A

D/A Ta

MLX90313

Ta

PWM

To

COMP12

TEMPOUT

IROUT

REL1

2

1

4

Application Microcontroller

Timer input (optional)

Timer input

MLX90601

EEprom, Control and Support Blocks

VSS

VDDCREF

3

5V

5

VSS

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8

16

IR thermometer modules

9 MLX90601EZA-CAA

9.1 Key properties

• consumer and industrial use

• PWM output signals with 10 bit resolution

• SPI interface available

• relay comparator and reference voltage

• 10 pole, mating to 1mm pitch flat cable connector

9.2 General description

The MLX90601EZA-CAA is a module that is targeted for industrial and consumer products use. The sensor and the MLX90313 ASIC are placed on a rigid PCB. The module has a 10 pole connector, which has all relevant interconnections to the ASIC. There are 2 temperature signals which are preset to provide digital PWM code output signals. The resolution of the Pulse Width Modulated output is 10 bits. Next to the temperature information these outputs can also flag ambient temperature underflow and overflow. The module has an on-board ECC (EEPROM consistency check), that checks the stored calibration constants and settings. In case of failure, the output fill flag this condition.

If the ambient temperature is out of the calibrated temperature range, both PWM signals will flag this condition, and the object and ambient temperatures will not be available until the ambient temperature is back in the calibrated temperature range.

The CAA type module has the SPI interface available. Next to reading the temperature information, the SPI interface also allows changing the module’s settings and calibration.

Next to the temperature outputs and SPI interface there is also a relay driver output. The relay driver has a threshold that is pre-set to 50°C, with a hysteresis of 5°C.

The PWM coding format is depicted below

t4:Error Signaling Band

Valid Data Output Band

FE

OVH

output signal

t

1

T

The PWM signal has a period of 102.4ms typical consisting of 2048 clock cycles of 50µs. Every frame starts with a leading buffer time, t1, during which the signal is always high, as shown in the figure. The leading buffer time is followed by a slot for the useful data signal starting at 1/8T ending at 5/8T, where the ratio t2/(t2+t3) is the representation of the output value. t4 is a slot for signaling of special conditions, such as out of range measurement of the sensor temperature, Tambient and the occurrence of a fatal EEPROM error, i.e. an error that can no longer be corrected automatically by the ECC circuitry of MLX90313.

3901090601 Page 21 of 49 Aug/02 Rev. 007

t

2

t

3

5

OVL

t

5

time

T

16

12

11

13

7

T

T0

MLX90601 family

−

%

50

IR thermometer modules

PWM duty cycle overview

Condition Duty cycle nominal timing Normal operation 12.5% - 62.5% 12.8 ms - 64 ms OVL: Tambient underflow 68.75 % 70.4 ms OVH: Tambient overflow 75 % 76.8 ms FE: Fatal Error EEPROM 81.25% 83.2 ms

The relation of the output voltage to the temperature is defined as follows:

DutyCycle

T +−

= *

where:

T measured temperature DutyCycle Duty Cycle of the IROUT or TEMPOUT PWM signals. Tmin minimal calibrated temperature Tmax maximum calibrated temperature

Refer to calibration details for calibrated ranges info

A graphical representation is depicted below.

IROUT PWM

versus

Object Temperature

%5.12

( )

TEMPOUT PWM

Ambient Temperature

TminTminTmax

versus

62.5

50

37.5

Duty Cycle IROUT (%)

25

12.5

-20 120

Object Temperature To (degC)

75

62.5

50

37.5

Duty Cycle TEMPOUT (%)

25

12.5 0 50

Ambient Temperature Ta (degC)

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CS

IR thermometer modules

The behavior of the module outside the calibrated ranges is shown below:

T object in range

T ambient in range

I I

II I

I II

I III

-20C

III II

120C

III II IIIIII

50C0C-40C 105C

Tobject

Tambient

Module operating conditions

Effect on outputs

Object temperature output is working normal Ambient temperature output is working normal

Object temperature output duty cycle will be 12.5% if To < -20C, or 62.5% if To > 120C. Ambient temperature output is working normal SPI IROUT register data bits 0x000 if To < -20C, or 0xFFF if To > 120C. SPI TOUT register operating normal

BOTH temperature outputs duty cycle will be 68.75% if Ta < 0C, or 75% if Ta > 50C. SPI IROUT register data bits 0x000 if Ta < 0C, or 0xFFF if Ta > 50C. Corresponding

overflow flags will be set.

The module may be damaged if operated outside the ambient temperature range.

BOTH temperature outputs duty cycle will be 68.75% if Ta < 0C, or 75% if To > 50C. SPI IROUT register data bits 0x000 if Ta < 0C, or 0xFFF if Ta > 50C. Corresponding

overflow flags will be set.

9.3 Serial Peripheral Interface (SPI)

Protocol

The digital interface implemented in MLX90313C is SPI compatible. It can be used to access the on-chip EEPROM and all internal registers. The chip will always work as a slave device. The format of any command is always 32 bits: 8 bits for the operation code, 8 bits for the address and 16 bits of data. The communication protocol is presented below.

CS

SCLK

SDI

C7 C0C1C2C3C4C5C6 A7 A0A1A2A3A4A5A6 D15 D8D9D10D11D12D13D14 D7 D0D1D2D3D4D5D6 X

SDO C7 C0C1C2C3C4C5C6 A7 A0A1A2A3A4A5A6 D15 D8D9D10D11D12D13D14X X

write command

SCLK

C7 C0C1C2C3C4C5C6 A7 A0A1A2A3A4A5A6 X

SDI

SDO

C7 C0C1C2C3C4C5C6 D7 D0D1D2D3D4D5D6D15 D8D9D10D11D12D13D14X X

read command

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Every write command starts with a high to low transition of CS and ends by a low to high transition of CS after 32 periods of the serial data clock (SCLK). MLX90313C reads the data present on SDI on the rising edge of the clock. With a delay of 8 periods of the serial clock, the SPI will repeat the opcode, address and the first 8 bits of data on pin SDO. This allows the external master to check command and address and terminate the operation in case of an error by forcing CS high before the end of the complete command cycle, i.e. before the end of the 32 clock periods. The read command is build up similarly, except that no data has to be passed of course. On SDO the opcode will be followed directly by the requested data, the address is not returned in this case.

The data on SDO is valid on the rising edge of the clock. In case of a read command, the SPI will output the data on SDO starting on the 25th rising edge of the clock (after CS low) as indicated in the figure above.

Timing/speed

The baud-rate depends on the serial data clock (SCLK) supplied by the master controller and is limited to 125kb/s. The timing requirements are given in the figure and table below

tsclktcls tsch

CS

SCLK

tsu thd

SDI

tdv

SDO

SPI timing

SPI timing requirements

Symbol Parameter Value Unit tsclk Sclk period min 8 tcls CS low to SCLK high min 50 ns tsch SCLK low to CS high min 50 ns tsu data in setup time min 200 ns thd data in hold time min 200 ns tdv data out valid min 1

operation codes

The operation code is the first series of 8bits in a command, C[7:0] in the figure on the protocol above. Below table summarizes the operations available in MLX90313C.

Operation Codes

mnem. C[7:0] Command WR

X101X0XX

Write internal register

µs

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IR thermometer modules

RD WEPR ER REPR BLWR BLER

Temperature registers

The object and ambient temperatures are stored into internal registers. A table containing the most interesting internal register addresses is included below:

Address list internal registers Register Function Address Irout Tobject (lin) 09h Tout Tambient (lin) 0Ah

These registers keep the linearised object and ambient temperature. Register format:

Bit 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0

Name D11 D10 D9 D8 D7 D6 D5 D4 D3 D2 D1 D0 OVH OVL FE Res

D11..D0 : 12 bit temperature data OVH: Overflow flag for Tambient measurement, Ta>Tamax, D[11:0] set to FFFh OVL: Underflow flag for Tambient measurement, Ta<Tamin, D[11:0] set to 000h FE: Fatal Error in EEPROM. Res Not used, always zero.

The measured temperature can be obtained from the register content as follows:

Where:

Rt register value (12 bit, 0x000 to 0xFFF) Tmax maximum calibrated temperature Tmin minimum calibrated temperature

EEPROM reprogramming

Every MLX90601 module has 8 words of 16bits of EEPROM space free to use for the user. One can freely use this memory space for serialization or storing some other info. Also, in some cases it is necessary to redefine functionality of the MLX90601 infrared module. The configuration constants are stored in EEPROM non-volatile memory. Note that also the linearization constants are stored in EEPROM, and erasing or over-writing these will irreversible destroy the modules’ proper operation. Reprogramming the EEPROM must be done with care.

Here’s how to rewrite a specific EEPROM address.

1. Write 0xB200 to register address 0x10. This unlocks EEPROM control registers. The module now stops updating it’s output

2. Write 0x0065 to register address 0x18. Enables charge pump for programming.

X10010XX 0001XXXX 001XXXXX X0001XXX 1001XXXX 101XXXXX

Rt

T +−

12

Read internal register Write EEPROM Erase EEPROM Read EEPROM Block Write EEPROM Block erase EEPROM

TminTmin)(Tmax

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3. Erase the address you want to rewrite

4. Write the new data in the EEPROM address

5. Repeat steps 3 and 4 for any further programming

6. You now can cycle the power for restarting the chip in normal operation, with new settings

Be sure never to use the Block Write or Block Erase commands, as they completely erase the EEPROM. For further details please refer to MLX90313 datasheet.

9.4 Physical outline

9.5 Pin-out and pin descriptions

pin-out information

pin name Function

1 REL1 Relay output 2 VSS Ground connection 3 VDD Supply voltage 4 SDIN SPI data in 5 SDOUT SPI data out 6 CSB SPI chip select 7 SCLK SPI clock 8 IROUT PWM coded output infrared

temperature 9 VREF Reference voltage output 10 TEMPOUT PWM coded output ambient

temperature

REL1 Open drain relay driver output. The typical on-resistance of this driver is <10

Ohms.

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MLX90601 family

dependent. These settings can be changed by factory programming on request.

IR thermometer modules

REL1

Tobject

COMP

Threshold in

EEPROM

VSS

Hysteresis

in EEPROM

The comparator is a digital comparator, with a resolution of 12 bits. By default the input polarity is inverting. Threshold and hysteresis values are version

Refer to calibration settings for factory preset values. VSS Supply pin (0V) VDD Supply pin

SDIN SPI data input SDOUT SPI data output CSB SPI chip select. Active low. SCLK SPI clock line IROUT IRout PWM coded output pin. The duty cycle of the signal on this pin is a linear

representation of Tobject, the temperature of the object the IR sensor is pointed

at. VREF DAC reference voltage. This voltage must be used if the module is used as a

thermostat using the REL1 comparator with external threshold. TEMPOUT Tempout PWM coded output pin. The duty cycle of the signal on this pin is a

linear representation of Tambient, the temperature of the IR sensor, as

measured by the PTC inside MLX90247.

9.6 Electrical specifications

Parameter symbol condition min typ max unit

Supply Voltage

Supply voltage range VDD 4.75 5 6 V Power consumption IDD Ta=25C 5 5.6 mA

outputs IROUT/TEMPOUT

PWM modulator resolution 10 bits PWM Clock period Tclk 45 50 55 PWM Total period T 92.16 102.4 112.64 ms Leading buffer time t1 % of T 12.5 Trailing buffer time t5 % of T 12.5 Duty cycle high t2 % of T 0 50 % Duty cycle low t3 % of T 0 50 % Error signal t4 % of T 25 Rise time* 10% to 90% of Vh 13.3 100 Fall time* 90% to 10% of Vh 13.3 100 Output voltage high Vh Ihigh=2mA 4 V Output voltage low Vl Ilow=2mA 1 V

3901090601 Page 27 of 49 Aug/02 Rev. 007

µs %

%

µs µs

MLX90601 family

IR thermometer modules

Parameter symbol condition min typ max unit

Rel1 open drain relay driver

output impedance Ro 10 Ohms High voltage protections 32 V

9.7 Calibration details

Maximum calibrated object temperature 120°C Minimum calibrated object temperature -20°C Object temperature Accuracy ±2°C Maximum calibrated ambient temperature 0°C Minimum calibrated ambient temperature 50°C Ambient temperature Accuracy ±1°C Response time 500ms REL1 source Tobject REL1 polarity (*) Inverting REL1 threshold 50°C REL1 hysteresis 5°C Emissivity 0.99

Note: Comparator polarity: Inverting: relay switches OFF if temperature is above the threshold. Non-inverting: relay switches ON if temperature is above the threshold.

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9.8 Applications information

Connection of the MLX90601EZA-CAA module into an application is straightforward. The 5V regulated supply should be connected between pin 3 (VDD) and pin 2 (VSS). There are numerous possibilities for the I/O of which one example is shown below. Here the default configuration is used. In the example a relay is switched with the REL1 output. The threshold for this comparator is programmed in the EEPROM. This means the microcontroller can change the threshold, and the MLX90601 can control the alarm standalone. The SPI connection to the host microcontroller can be a permanent connection in the application or just a means for in-circuit programming of the device. Through this connection full access to the internal registers and configuration settings is achieved. The SPI connection can also be used to directly read output data from the module in digital form and process this directly in the application. An interesting feature is in-circuit programming of the calibration constants. It is possible to change the range or emissivity, or whatever setting needs to be user adjustable.

IR sensor

Thermisto

MLX90247

IR+

IR-

r

Rsens

VSS

IRINP

IRINN

TINP

TINN

OPA

A/D

Digital

A/D

PWM

MLX90313C

To

COMP

REL1

TEMPOUT IROUT

1

10

8

SW1

SW2

VCM25V

VSS

Control and Support Blocks

SPI

VREFP

VDDCREF

4 5 6 7SPI

Micro-controller I/O-port

9 3 2

PWM IN

Vref 5V VSS

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IR thermometer modules

10 MLX90601KZA-BKA

10.1 Key properties

• Flex circuit for consumer and industrial use.

• analog output signals with 8 bit resolution

• SPI interface available

• relay comparator and reference voltage

• 10 pole flex connector

10.2 General description

The MLX90601KZA-BKA is a module that is targeted for industrial and consumer products use. The sensor and the MLX90313 ASIC are placed on a flexible substrate. This allows the sensor to be bent in any direction. This may greatly simplify fitting in the module into the application. The module has a 10 pole connector, which has all relevant interconnections to the ASIC. There are 2 temperature signals which are preset to provide analog output voltage. The Object temperature information is available at the IROUT pin. The ambient temperature information is available on the TEMPOUT pin. The resolution of the output D/A converter is 8bit. The output drivers have a maximum output voltage of 4.5V when the maximum calibrated temperature is reached.

If the ambient temperature is out of the calibrated temperature range, the correct object temperature cannot be calculated. For applications where the ambient temperature can rise above the maximum calibrated temperature, the ambient temperature output must be monitored to make sure the object temperature is valid.

The flex modules all have the SPI interface available. Next to reading the temperature information, the SPI interface also allows changing the module’s settings and calibration.

The temperature as read by the SPI interface will not be equal to the temperature presented at the analog outputs. Refer to SPI interface description for details.

Next to the temperature outputs there is also a relay driver output. The relay driver has a threshold that is pre-set to 95°C, with a hysteresis of 5°C.

The relation of the output voltage to the temperature is defined as follows:

Vout

T +−= *

( )

TminTminTmax

Where:

T measured temperature Vout analog output voltage on IROUT or TEMPOUT pins. Tmin minimal calibrated temperature Tmax maximum calibrated temperature

Refer to calibration details for calibrated ranges info

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A graphical representation is depicted below.

IROUT output voltage

versus

Object Temperature

4.5

4

3.5

3

2.5

2

1.5

Output Voltage IROUT (V)

1

0.5

0

-40

40

Object Temperature To (degC)

110 1201008060200-20

The behavior of the module outside the calibrated ranges is shown below:

TEMPOUT output voltage

versus

Ambient Temperature

4.5

4

3.5

3

2.5

2

1.5

1

Output Voltage TEMPOUT (V)

0.5

0

Ambient Temperature Ta (degC)

85-20

-20C

III II

120C

III II IIIIII

85C-20C-40C 125C

Tobject

Tambient

Module operating conditions

T object in range

I I

T ambient in range

Effect on outputs

Object temperature output is working normal Ambient temperature output is working normal

II I

Object temperature output will be clamped at 0V (To < -20C) or clamped at 4.5V (T0>120C).

Ambient temperature output is working normal SPI IROUT register data bits 0x000 if To < -20C, or 0xFFF if To > 120C. SPI TOUT register operating normal

I or II II

BOTH temperature outputs will be clamped 0V (Ta < -20C) or clamped at 4.5V (Ta>85C). SPI IROUT register data bits 0x000 if Ta < -20C, or 0xFFF if Ta > 85C. Corresponding

overflow flags will be set.

I or II III

The module may be damaged if operated outside the ambient temperature range.

BOTH temperature outputs will be clamped 0V (Ta < -20C) or clamped at 4.5V (Ta>85C). SPI IROUT register data bits 0x000 if Ta < -20C, or 0xFFF if Ta > 85C. Corresponding

overflow flags will be set.

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CS

IR thermometer modules

10.3 Serial Peripheral Interface (SPI)

Protocol

The digital interface implemented in MLX90313C is SPI compatible. It can be used to access the on-chip EEPROM and all internal registers. The chip will always work as a slave device. The format of any command is always 32 bits: 8 bits for the operation code, 8 bits for the address and 16 bits of data. The communication protocol is presented below.

CS

SCLK

SDI

C7 C0C1C2C3C4C5C6 A7 A0A1A2A3A4A5A6 D15 D8D9D10D11D12D13D14 D7 D0D1D2D3D4D5D6 X

SDO C7 C0C1C2C3C4C5C6 A7 A0A1A2A3A4A5A6 D15 D8D9D10D11D12D13D14X X

Write command

SCLK

C7 C0C1C2C3C4C5C6 A7 A0A1A2A3A4A5A6 X

SDI

SDO

C7 C0C1C2C3C4C5C6 D7 D0D1D2D3D4D5D6D15 D8D9D10D11D12D13D14X X

Read command

Every write command starts with a high to low transition of CS and ends by a low to high transition of CS after 32 periods of the serial data clock (SCLK). MLX90313C reads the data present on SDI on the rising edge of the clock. With a delay of 8 periods of the serial clock, the SPI will repeat the opcode, address and the first 8 bits of data on pin SDO. This allows the external master to check command and address and terminate the operation in case of an error by forcing CS high before the end of the complete command cycle, i.e. before the end of the 32 clock periods. The read command is build up similarly, except that no data has to be passed of course. On SDO the opcode will be followed directly by the requested data, the address is not returned in this case.

The data on SDO is valid on the rising edge of the clock. In case of a read command, the SPI will output the data on SDO starting on the 25th rising edge of the clock (after CS low) as indicated in the figure above.

Timing/speed

The baud-rate depends on the serial data clock (SCLK) supplied by the master controller and is limited to 125kb/s. The timing requirements are given in the figure and table below

=

tsclktcls tsch

CS

SCLK

tsu thd

SDI

tdv

SDO

SPI timing

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IR thermometer modules

SPI timing requirements

Symbol Parameter Value Unit tsclk Sclk period min 8 tcls CS low to SCLK high min 50 ns tsch SCLK low to CS high min 50 ns tsu data in setup time min 200 ns thd data in hold time min 200 ns tdv data out valid min 1

operation codes

The operation code is the first series of 8bits in a command, C[7:0] in the figure on the protocol above. Below table summarizes the operations available in MLX90313C.

Operation Codes

mnem. C[7:0] Command WR RD WEPR ER REPR BLWR BLER

Temperature registers

The object and ambient temperatures are stored into internal registers. A table containing the most interesting internal register addresses is included below:

Address list internal registers Register Function Address Irout Tobject (lin) 09h Tout Tambient (lin) 0Ah

X101X0XX X10010XX

0001XXXX 001XXXXX X0001XXX 1001XXXX 101XXXXX

Write internal register Read internal register Write EEPROM Erase EEPROM Read EEPROM Block Write EEPROM Block erase EEPROM

These registers keep the linearised object and ambient temperature. Register format:

Bit 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0

Name D11 D10 D9 D8 D7 D6 D5 D4 D3 D2 D1 D0 OVH OVL FE Res

D11..D0 : 12 bit temperature data OVH: Overflow flag for Tambient measurement, Ta>Tamax, D[11:0] set to FFFh OVL: Underflow flag for Tambient measurement, Ta<Tamin, D[11:0] set to 000h FE: Fatal Error in EEPROM. Res Not used, always zero.

The MLX90601 KZA-BKA has been calibrated to have absolute voltage outputs. Therefore there is a difference between the temperature information of the analog outputs and the internal register values.

µs

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2

IR thermometer modules

Before calculation of the temperature for the internal register content is possible, it is necessary to measure the VREF voltage, available at pin 5. This voltage will be slightly different for each module so it must be measured for every module. A correction factor must be included in the calculation.

The measured temperature can be obtained from the register content as follows:

Vref

*

Rt

T +−•

Where:

T measured temperature Rt register value (12 bit, 0x000 to 0xFFF) Vref Reference voltage (to be measured) Tmax maximum calibrated temperature Tmin minimum calibrated temperature

EEPROM reprogramming

Every MLX90601 module has 8 words of 16bits of EEPROM space free to use for the user. One can freely use this memory space for serialization or storing some other info. Also, in some cases it is necessary to redefine functionality of the MLX90601 infrared module. The configuration constants are stored in EEPROM non-volatile memory. Note that also the linearization constants are stored in EEPROM, and erasing or over-writing these will irreversible destroy the modules’ proper operation. Reprogramming the EEPROM must be done with care.

Here’s how to rewrite a specific EEPROM address.

7. Write 0xB200 to register address 0x10. This unlocks EEPROM control registers. The module now stops updating it’s output

8. Write 0x0065 to register address 0x18. Enables charge pump for programming.

9. Erase the address you want to rewrite

10. Write the new data in the EEPROM address

11. Repeat steps 3 and 4 for any further programming

12. You now can cycle the power for restarting the chip in normal operation, with new settings

Be sure never to use the Block Write or Block Erase commands, as they completely erase the EEPROM. For further details please refer to MLX90313 datasheet.

5.4

12

TminTmin)(Tmax

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10.4 Physical outline

MLX90601 family

IR thermometer modules

10.5 Pin-out and pin descriptions

pin-out information

pin name function

1 VSS Ground connection 2 REL1 Relay output 3 IROUT analog output infrared temperature 4 TEMPOUT analog output ambient temperature 5 VREF Reference voltage output 6 VDD Supply voltage 7 SDIN SPI data in 8 SCLK SPI clock 9 SDOUT SPI data out

10 CSB SPI chip select VSS Supply pin (0V) REL1 Open drain relay driver output. The typical on-resistance of this driver is <10 Ohms.

REL1

Tobject

COMP

Threshold in

EEPROM

VSS

Hysteresis

in EEPROM

The comparator is a digital comparator, with a resolution of 12 bits. By default the input

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IR thermometer modules

polarity is inverting. Threshold and hysteresis values are version dependent. These settings can be changed by factory programming on request. Refer to calibration settings for factory preset values.

IROUT IRout analog voltage output pin. The voltage at this pin is a linear representation of Tobject,

the temperature of the object the IR sensor is pointed at.

TEMPOUT Ambient temperature analog voltage output pin. The voltage at this pin is a linear

representation of Tambient, the temperature of the IR sensor, as measured by the PTC inside MLX90247.

VREF DAC reference voltage. This voltage must be used if the module is used as a thermostat

using the REL1 comparator with external threshold.

VDD Supply pin SDIN SPI data input

SCLK SPI clock line SDOUT SPI data output CSB SPI chip select. Active low.

10.6 Electrical specifications

Parameter symbol condition min typ max unit

Supply Voltage

Supply voltage range VDD 4.75 5 6 V Power consumption IDD Ta=25C 5 5.6 mA

analog outputs IROUT/TEMPOUT

D/A converter resolution 8 Bits Output source current Iod 1 mA Output sink current Ios 20 uA AC Output impedance ro 100 Capacitive load Cmax directly on pin 50 pF Capacitive load with 200 ohms

series resistance

Rel1 open drain relay driver

output impedance Ro 10 Ohms High voltage protections 32 V

When the Cmax value is exceeded, a series resistor must be used to maintain stability.

100 nF

Ω

10.7 Calibration details

Maximum calibrated object temperature 120°C Minimum calibrated object temperature -20°C Object temperature Accuracy ±2°C Maximum calibrated ambient temperature -20°C Minimum calibrated ambient temperature 85°C Ambient temperature Accuracy ±1°C Response time 500ms REL1 source Tobject REL1 polarity (*) Inverting REL1 threshold 95°C REL1 hysteresis 5°C Emissivity 0.99

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IR thermometer modules

Note: Comparator polarity: Inverting: relay switches OFF if temperature is above the threshold. Non-inverting: relay switches ON if temperature is above the threshold.

10.8 Applications information

Connection of the MLX90601 module into an application is straightforward. The 5V regulated supply should be connected between pin 6 (VDD) and pin 1 (VSS). The outputs can be measured relative to VSS at pin 3 (IROUT) for Tobject and pin 4 (TEMPOUT) for Tambient, e.g. by means of a voltmeter. In an actual application the module outputs can be directly connected to the A/D inputs of a microcontroller, e.g. as a replacement for a conventional temperature sensor. When large loading capacitances are to be used, a series resistor may be necessary. Refer to electrical specifications.

Although the circuit carrier is flexible, it is only intended to be bent at the neck between the thermopile sensor and the ASIC. Minimal bending radius is 1.5mm.

In many applications, the ambient temperature of the sensor is not needed. In this case, pin 2 can simply be left open. The REL1 signal can be used as input for a digital I/O or to drive a relay (not shown). In case of a digital input the microcontroller must have internal pull-up resistors or an external pull-up resistor must be added. Here of course the microcontroller connection to the SPI interface is purely optional.

IR sensor

Thermisto

MLX90247

IRINP

IR+

IRINN

IR-

r

Rsens

VSS

TINP

TINN

VCM25V

VSS

OPA

A/D

Digital

A/D D/A

Control and Support Blocks

D/A

Ta

MLX90313

IROUT

TEMPOUT

12

COMP

REL1

VREFP

VDDCREF

SPI

3

4

2

5 6

Application

Microcontroller

A/D input

A/D input (optional)

Vref 5V VSS

MLX90601

Micro-controller I/O-port

CSB

SDOUT

1019 8

SDIN

SCLK

7SPI

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8

16

IR thermometer modules

11 MLX90601KZA-CKA

11.1 Key properties

• Flex circuit for consumer and industrial use.

• PWM output signals with 10 bit resolution

• SPI interface available

• relay comparator and reference voltage

• 10 pole flex connector

11.2 General description

The MLX90601KZA-CKA is a module that is targeted for industrial and consumer products use. The sensor and the MLX90313 ASIC are placed on a flexible substrate. This allows the sensor to be bent in any direction. This may greatly simplify fitting in the module into the application. The module has a 10 pole connector, which has all relevant interconnections to the ASIC. There are 2 temperature signals which are preset to provide digital PWM code output signals. The resolution of the Pulse Width Modulated output is 10 bits. Next to the temperature information this outputs can also flag ambient temperature underflow and overflow. The module has an on-board ECC (EEPROM consistency check), that checks the stored calibration constants and settings. In case of failure, the output fill flag this condition.

If the ambient temperature is out of the calibrated temperature range, both PWM signals will flag this condition, and the object and ambient temperatures will not be available until the ambient temperature is back in the calibrated temperature range.

The flex modules all have the SPI interface available. Next to reading the temperature information, the SPI interface also allows changing the module’s settings and calibration.

Next to the temperature outputs and SPI interface there is also a relay driver output. The relay driver has a threshold that is pre-set to 95°C, with a hysteresis of 5°C.

The PWM coding format is depicted below

t4:Error Signaling Band

Valid Data Output Band

FE

OVH

output signal

t

1

T

The PWM signal has a period of 102.4ms typical consisting of 2048 clock cycles of 50µs. Every frame starts with a leading buffer time, t leading buffer time is followed by a slot for the useful data signal starting at 1/8T ending at 5/8T, where the ratio t2/(t2+t3) is the representation of the output value. t4 is a slot for signaling of special conditions, such as out of range measurement of the sensor temperature, Tambient and the occurrence of a fatal EEPROM error, i.e. an error that can no longer be corrected automatically by the ECC circuitry of MLX90313.

3901090601 Page 38 of 49 Aug/02 Rev. 007

t

2

, during which the signal is always high, as shown in the figure. The

1

t

3

5

OVL

t

5

time

T

16

12

11

13

7

T

T0

MLX90601 family

−

%

50

IR thermometer modules

PWM duty cycle overview

Condition Duty cycle nominal timing Normal operation 12.5% - 62.5% 12.8 ms - 64 ms OVL: Tambient underflow 68.75 % 70.4 ms OVH: Tambient overflow 75 % 76.8 ms FE: Fatal Error EEPROM 81.25% 83.2 ms

The relation of the output voltage to the temperature is defined as follows:

DutyCycle

T +−

= *

where:

T measured temperature DutyCycle Duty Cycle of the IROUT or TEMPOUT PWM signals. Tmin minimal calibrated temperature Tmax maximum calibrated temperature

Refer to calibration details for calibrated ranges info A graphical representation is depicted below.

IROUT PWM

versus

Object Temperature

%5.12

( )

TEMPOUT PWM

Ambient Temperature

TminTminTmax

versus

62.5

50

37.5

Duty Cycle IROUT (%)

25

12.5

-20 120

Object Temperature To (degC)

75

62.5

50

37.5

Duty Cycle TEMPOUT (%)

25

12.5

-20 85

Ambient Temperature Ta (degC)

The behavior of the module outside the calibrated ranges is shown below:

III II

-20C

120C

III II IIIIII

85C-20C-40C 125C

Tobject

Tambient

3901090601 Page 39 of 49 Aug/02 Rev. 007

T object in range

T ambient in range

I I

II I

I II

I III

MLX90601 family

IR thermometer modules

Module operating conditions

Effect on outputs

Object temperature output is working normal Ambient temperature output is working normal

Object temperature output duty cycle will be 12.5% if To < -20C, or 62.5% if To > 120C. Ambient temperature output is working normal SPI IROUT register data bits 0x000 if To < -20C, or 0xFFF if To > 120C. SPI TOUT register operating normal

BOTH temperature outputs duty cycle will be 68.75% if Ta < -20C, or 75% if Ta > 85C. SPI IROUT register data bits 0x000 if Ta < -20C, or 0xFFF if Ta > 85C. Corresponding

overflow flags will be set.

The module may be damaged if operated outside the ambient temperature range.

BOTH temperature outputs duty cycle will be 68.75% if Ta < -20C, or 75% if Ta > 85C. SPI IROUT register data bits 0x000 if Ta < -20C, or 0xFFF if Ta > 85C. Corresponding

overflow flags will be set.

11.3 Serial Peripheral Interface (SPI)

Protocol

The digital interface implemented in MLX90313C is SPI compatible. It can be used to access the on-chip EEPROM and all internal registers. The chip will always work as a slave device. The format of any command is always 32 bits: 8 bits for the operation code, 8 bits for the address and 16 bits of data. The communication protocol is presented below.

CS

SCLK

SDI

C7 C0C1C2C3C4C5C6 A7 A0A1A2A3A4A5A6 D15 D8D9D10D11D12D13D14 D7 D0D1D2D3D4D5D6 X

SDO C7 C0C1C2C3C4C5C6 A7 A0A1A2A3A4A5A6 D15 D8D9D10D11D12D13D14X X

write command

CS

SCLK

SDI

C7 C0C1C2C3C4C5C 6 A7 A 0A1A2A3A4A5A6 X

SDO C7 C0C1C2C3C4C5C6 D7 D0D 1D2D3D4D5D6D15 D8D9D10D11D12D13D14X X

read command

Every write command starts with a high to low transition of CS and ends by a low to high transition of CS after 32 periods of the serial data clock (SCLK). MLX90313C reads the data present on SDI on the rising edge of the clock. With a delay of 8 periods of the serial clock, the SPI will repeat the opcode, address and the first 8 bits of data on pin SDO. This allows the external master to check command and address and terminate the operation in case of an error by forcing CS high before the end of the complete command cycle, i.e. before the end of the 32 clock periods. The read command is build up similarly, except that no data has to be passed of course. On SDO the opcode will be followed directly by the requested data, the address is not returned in this case.

The data on SDO is valid on the rising edge of the clock. In case of a read command, the SPI will output

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the data on SDO starting on the 25th rising edge of the clock (after CS low) as indicated in the figure above.

Timing/speed

The baud-rate depends on the serial data clock (SCLK) supplied by the master controller and is limited to 125kb/s. The timing requirements are given in the figure and table below

tsclktcls tsch

CS

SCLK

tsu thd

SDI

tdv

SDO

SPI timing

SPI timing requirements

Symbol Parameter Value Unit tsclk Sclk period min 8 tcls CS low to SCLK high min 50 ns tsch SCLK low to CS high min 50 ns tsu data in setup time min 200 ns thd data in hold time min 200 ns tdv data out valid min 1

operation codes

The operation code is the first series of 8bits in a command, C[7:0] in the figure on the protocol above. Below table summarizes the operations available in MLX90313C.

Operation Codes

mnem. C[7:0] Command WR RD WEPR ER REPR BLWR BLER

X101X0XX X10010XX

0001XXXX 001XXXXX X0001XXX 1001XXXX 101XXXXX

Write internal register Read internal register Write EEPROM Erase EEPROM Read EEPROM Block Write EEPROM Block erase EEPROM

µs

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MLX90601 family

−=1

2

IR thermometer modules

Temperature registers

The object and ambient temperatures are stored into internal registers. A table containing the most interesting internal register addresses is included below:

Address list internal registers Register Function Address Irout Tobject (lin) 09h Tout Tambient (lin) 0Ah

These registers keep the linearised object and ambient temperature. Register format:

Bit 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0

Name D11 D10 D9 D8 D7 D6 D5 D4 D3 D2 D1 D0 OVH OVL FE Res

D11..D0 : 12 bit temperature data OVH: Overflow flag for Tambient measurement, Ta>Tamax, D[11:0] set to FFFh OVL: Underflow flag for Tambient measurement, Ta<Tamin, D[11:0] set to 000h FE: Fatal Error in EEPROM. Res Not used, always zero.

The measured temperature can be obtained from the register content as follows:

Rt

T +−

12

Where:

T measured temperature Rt register value (12 bit, 0x000 to 0xFFF) Tmax maximum calibrated temperature Tmin minimum calibrated temperature

EEPROM reprogramming

Every MLX90601 module has 8 words of 16bits of EEPROM space free to use for the user. One can freely use this memory space for serialization or storing some other info. Also, in some cases it is necessary to redefine functionality of the MLX90601 infrared module. The configuration constants are stored in EEPROM non-volatile memory. Note that also the linearization constants are stored in EEPROM, and erasing or over-writing these will irreversible destroy the modules’ proper operation. Reprogramming the EEPROM must be done with care.

Here’s how to rewrite a specific EEPROM address.

13. Write 0xB200 to register address 0x10. This unlocks EEPROM control registers. The module now stops updating it’s output

14. Write 0x0065 to register address 0x18. Enables charge pump for programming.

15. Erase the address you want to rewrite

16. Write the new data in the EEPROM address

17. Repeat steps 3 and 4 for any further programming

18. You now can cycle the power for restarting the chip in normal operation, with new settings

Make sure never to use the Block Write or Block Erase commands, as they completely erase the EEPROM. For further details please refer to MLX90313 datasheet.

TminTmin)(Tmax

3901090601 Page 42 of 49 Aug/02 Rev. 007

11.4 Physical outline

MLX90601 family

IR thermometer modules

11.5 Pin-out and pin descriptions

pin-out information

pin name function

1 VSS Ground connection 2 REL1 Relay output 3 IROUT PWM coded output infrared

temperature

4 TEMPOUT PWM coded output ambient

temperature 5 VREF Reference voltage output 6 VDD Supply voltage 7 SDIN SPI data in 8 SCLK SPI clock 9 SDOUT SPI data out 10 CSB SPI chip select

VSS Supply pin (0V) REL1 Open drain relay driver output. The typical on-resistance of this driver is <10

Ohms.

REL1

Tobject

COMP

Threshold in

EEPROM

VSS

Hysteresis

in EEPROM

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MLX90601 family

dependent. These settings can be changed by factory programming on request.

IR thermometer modules

The comparator is a digital comparator, with a resolution of 12 bits. By default the input polarity is inverting. Threshold and hysteresis values are version

Refer to calibration settings for factory preset values.

IROUT IRout PWM coded output pin. The duty cycle of the signal on this pin is a linear

representation of Tobject, the temperature of the object the IR sensor is pointed at.

TEMPOUT Tempout PWM coded output pin. The duty cycle of the signal on this pin is a

linear representation of Tambient, the temperature of the IR sensor, as measured by the PTC inside MLX90247.

VREF DAC reference voltage. This voltage must be used if the module is used as a

thermostat using the REL1 comparator with external threshold.

VDD Supply pin SDIN SPI data input

SCLK SPI clock line SDOUT SPI data output CSB SPI chip select. Active low.

11.6 Electrical specifications

Parameter symbol condition min typ max unit

Supply Voltage

Supply voltage range VDD 4.75 5 6 V Power consumption IDD Ta=25C 5 5.6 mA

outputs IROUT/TEMPOUT

PWM modulator resolution 10 bits PWM Clock period Tclk 45 50 55 PWM Total period T 92.16 102.4 112.64 ms Leading buffer time t1 % of T 12.5 Trailing buffer time t5 % of T 12.5 Duty cycle high t2 % of T 0 50 % Duty cycle low t3 % of T 0 50 % Error signal t4 % of T 25 Rise time* 10% to 90% of Vh 13.3 100 Fall time* 90% to 10% of Vh 13.3 100 Output voltage high Vh Ihigh=2mA 4 V Output voltage low Vl Ilow=2mA 1 V

Rel1 open drain relay driver

output impedance Ro 10 Ohms High voltage protections 32 V

µs %

%

µs µs

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11.7 Calibration details

Maximum calibrated object temperature 120°C Minimum calibrated object temperature -20°C Object temperature Accuracy ±2°C Maximum calibrated ambient temperature -20°C Minimum calibrated ambient temperature 85°C Ambient temperature Accuracy ±1°C Response time 500ms REL1 source Tobject REL1 polarity (*) Inverting REL1 threshold 95°C REL1 hysteresis 5°C Emissivity 0.99

Note: Comparator polarity: Inverting: relay switches OFF if temperature is above the threshold. Non-inverting : relay switches ON if temperature is above the threshold.

11.8 Applications information

Connection of the MLX90601 module into an application is straightforward. The 5V regulated supply should be connected between pin 6 (VDD) and pin 1 (VSS). The outputs can be measured relative to VSS at pin 3 (IROUT) for Tobject and pin 4 (TEMPOUT) for Tambient, e.g. by means of a voltmeter. In an actual application the module outputs can be directly connected to the A/D inputs of a microcontroller, e.g. as a replacement for a conventional temperature sensor. When large loading capacitances are to be used, a series resistor may be necessary. Refer to electrical specifications.

In many applications, the ambient temperature of the sensor is not needed. In this case, pin 2 can simply be left open. The REL1 signal can be used as input for a digital I/O or to drive a relay (not shown). In case of a digital input the microcontroller must have internal pull-up resistors or an external pull-up resistor must be added. Here of course the microcontroller connection to the SPI interface is purely optional.

IR sensor

Thermisto

MLX90247

IRINP

IR+

IRINN

IR-

r

Rsens

VSS

TINP

TINN

VCM25V

VSS

OPA

A/D

Digital

A/D D/A

Control and Support Blocks

D/A

Ta

MLX90313

IROUT

TEMPOUT

12

COMP

REL1

VREFP

VDDCREF

SPI

3

4

2

5 6

Application

Microcontroller

Timer input

Timer input (optional)

Vref 5V VSS

MLX90601

Micro-controller I/O-port

CSB

SDOUT

1019 8

SDIN

SCLK

7SPI

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12 ESD Precautions

Electronic semiconductor products are sensitive to Electro Static Discharge (ESD). Always observe Electro Static Discharge control procedures whenever handling semiconductor products.

13 Reliability Information

Melexis devices are classified and qualified regarding suitability for infrared, vapor phase and wave soldering with usual (63/37 SnPb-) solder (melting point at 183degC). The following test methods are applied:

• IPC/JEDEC J-STD-020A (issue April 1999) Moisture/Reflow Sensitivity Classification For Nonhermetic Solid State Surface Mount Devices

• CECC00802 (issue 1994) Standard Method For The Specification of Surface Mounting Components (SMDs) of Assessed Quality

• MIL 883 Method 2003 / JEDEC-STD-22 Test Method B102 Solderability

For all soldering technologies deviating from above mentioned standard conditions (regarding peak temperature, temperature gradient, temperature profile etc) additional classification and qualification tests have to be agreed upon with Melexis.

The application of Wave Soldering for SMD’s is allowed only after consulting Melexis regarding assurance of adhesive strength between device and board.

For more information on manufacturability/solderability see quality page at our website:

http://www.melexis.com/

14 FAQ

Q: What is the accuracy? A: For the standard offered modules the accuracy is ±2°C for the object temperature and ±1°C for the ambient temperature.

Q: Does accuracy increase when the temperature range is decreased? A: No. The main error comes from limited measurement precision during calibration. These imperfections are the same for all modules. High precision calibration can be provided for some custom products. Please contact Melexis customer support.

Q: What is FOV? A: The FOV or Field Of View is a definition of the area the sensor is ‘seeing’. The sensor will detect radiation coming in at an angle, relative to the sensor’s central axis, from 0° to 35°. The full viewing angle is thus 70°.

Q: What is the useful temperature range? A: There are two temperature ranges of interest; the temperature of the object (or target), which you are trying to measure and the temperature of the sensor. The sensor temperature, called Tambient, should be in the calibrated temperature range. See calibration details. Outside this range the ambient temperature compensation will no longer work and calculation of the object’s temperature will no longer be correct. The object temperature, called Tobject, should be between –20°C and 120°C. Outside this range the IROUT output will saturate.

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Q: Can the temperature ranges be changed? A: Yes, MLX90313 is a programmable device. Melexis selected a limited set of standard ranges that will fit the majority of applications in order to limit delivery times. However, if necessary, the ranges can be adapted for any particular application. Depending on the application, the user may do so himself using the EVB board and software. For other applications Melexis may have to do custom calibration. Please contact Melexis customer support.

Q: Can the Field of View (FOV) be made smaller? A: In theory, yes. In most cases it is sufficient to place a tube over the sensor, narrowing the opening angle. After narrowing the FOV, the module will be out of calibration. For applications that require a small FOV, Melexis can provide custom calibrated devices. Please contact Melexis customer support.

Q: IR radiation is comparable with light. Does my object have to be black? A: No, the appearance in the visible light spectrum completely differs from the appearance for IR wavelengths. Water and glass for instance, are completely opaque for IR, and thus you can perfectly measure the temperature. Air is transparent for IR and does not influence the measurement. The better name for this property is EMISSIVITY

Q: What is emissivity and how does it affect my measurement? A: Emissivity is the ratio of the emitted IR energy over the total IR energy that an object has. You can find the value for this property by searching the internet, material data sheets etc. Ice, water, skin, clothes, most non-metallic coatings have an emissivity of 0.90 to 0.99. Emissivity should be close to 1. When measuring objects with low emissivity, reflections of the ambient temperature will come into the thermopile sensor. Therefore there is a measurement error depending on the difference between object and ambient temperature. If the surface of the target has an emissivity lower than 0.7, you can still measure it, but here some tips and tricks are needed. Contact the application engineer for support.

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15 Appendix A: SPI interfacing to automotive modules

The MLX90601EZA-BAA and MLX90601EZA-DAA do not have a connector with the SPI interface signals. To communicate with the module, a SOIC clip can be mounted directly onto the back of the 90313 ASIC. The SOIC clip itself can be connected to the EVB board by means of a flat cable.

Melexis does not supply these cables; references to the components are given below so the user can build a cable himself.

15.1 Component references

SOIC-20 clip

Manufacturer : Hirschmann Order code : 933 083-001

Flat cable 10 Conductors, 28 AWG, Stranded, 1mm Pitch, Gray Color, Round Conductor Flat Cable Manufacturer: 3M

Order code: 3625/10 Connector mating 1mm pitch flat cable and EVB board connector Manufacturer : 3M

Order code : 3M™ 2mm X 2mm Wire mount Socket, 152210-0100-GB, or equivalent.

15.2 SPI Communication cable pin-out

SOIC CLIP SIDE

REL1

6

VSS

5

VDD

15

SDIN

8

SDOUT

18

CSB

19

SCLK

17

IROUT

7

VREF

12

TEMPOUT

20

SOIC CLIP

Note: dashed connections are purely optional. They are not necessary to establish SPI communication. However they may help making measurements.

Attention: when the clip is mounted onto the ASIC, temperature measurement values will be influenced, and the module may be out of specification. Measured values when using the SOIC test clip must be interpreted purely indicative.

3901090601 Page 48 of 49 Aug/02 Rev. 007

FLAT CABLE CONNECTOR

REL1

VSS VDD SDIN SDOUT CSB SCLK

IROUT VREF TEMPOUT

1 2 3 4 5 6 7 8 9

10

CONN FLEX 10

MLX90601 family

Devices sold by Melexis are covered by the warranty and patent indemnification provisions appearing

press, statutory, implied, or by description regarding

the information set forth herein or regarding the freedom of the described devices from patent

and without

notice. Therefore, prior to designing this product into a system, it is necessary to check with Melexis for

current information. This product is intended for use in normal commercial applications. Applications

nge, unusual environmental requirements, or high reliability

ment are specifically not

urnished by Melexis is believed to be correct and accurate. However, Melexis shall

ages, including but not limited to personal injury,

ness or indirect, special incidental or

quential damages, of any kind, in connection with or arising out of the furnishing, performance or

use of the technical data herein. No obligation or liability to recipient or any third party shall arise or

QS9000, VDA6.1 and ISO14001 Certified

IR thermometer modules

Disclaimer

in its Term of Sale. Melexis makes no warranty, ex infringement. Melexis reserves the right to change specifications and prices at any time

requiring extended temperature ra applications, such as military, medical life-support or life-sustaining equip recommended without additional processing by Melexis for each application. The information f not be liable to recipient or any third party for any dam property damage, loss of profits, loss of use, interrupt of busi conse

flow out of Melexis’ rendering of technical or other services.

For the latest version of this document, go to our website at:

www.melexis.com

Or for additional information contact Melexis Direct:

Europe and Japan: All other locations:

Phone: +32 13 67 04 95 Phone: +1 603 223 2362

E-mail: sales_europe@melexis.com E-mail: sales_usa@melexis.com

3901090601 Page 49 of 49 Aug/02 Rev. 007

Melexis MLX90601 Technical data

Specifications and Main Features

Frequently Asked Questions

User Manual