ANALOG DEVICES TMP05 Service Manual

±0.5°C Accurate PWM

V

FEATURES

Modulated serial digital output, proportional to

temperature
±0.5°C typical accuracy at 25°C
±1.0°C accuracy from 0°C to 70°C
Two grades available
Operation from −40°C to +150°C
Operation from 3 V to 5.5 V
Power consumption 70 μW maximum at 3.3 V
CMOS-/TTL-compatible output on TMP05
Flexible open-drain output on TMP06
Small, low cost, 5-lead SC-70 and SOT-23 packages

APPLICATIONS

Isolated sensors
Environmental control systems
Computer thermal monitoring
Thermal protection
Industrial process control
Power-system monitors

Temperature Sensor in 5-Lead SC-70

TMP05/TMP06

FUNCTIONAL BLOCK DIAGRAM

DD

5

TMP05/TMP06

TEMPERATURE

CONV/I N

2

SENSOR

REFERENCE

CLK AND

TIMING

GENERATION

Σ-Δ

CORE

4

GND

Figure 1.

AVE RAG IN G

BLOCK/

COUNTER

OUTPUT

CONTROL

1

3

OUT

FUNC

03340-001

GENERAL DESCRIPTION

The TMP05/TMP06 are monolithic temperature sensors that
generate a modulated serial digital output (PWM), which varies
in direct proportion to the temperature of the devices. The high
period (T
while the low period (T
high temperature accuracy of ±1°C from 0°C to 70°C with
excellent transducer linearity. The digital output of the TMP05/
TMP06 is CMOS-/TTL-compatible and is easily interfaced to
the serial inputs of most popular microprocessors. The flexible
open-drain output of the TMP06 is capable of sinking 5 mA.

The TMP05/TMP06 are specified for operation at supply voltages
from 3 V to 5.5 V. Operating at 3.3 V, the supply current is
typically 370 µA. The TMP05/TMP06 are rated for operation
over the –40°C to +150°C temperature range. It is not recom­mended to operate these devices at temperatures above 125°C
for more than a total of 5% (5,000 hours) of the lifetime of the
devices. They are packaged in low cost, low area SC-70 and
SOT-23 packages.

The TMP05/TMP06 have three modes of operation: continu­ously converting mode, daisy-chain mode, and one shot mode.

) of the PWM remains static over all temperatures,

H

) varies. The B Grade version offers a

L

A three-state FUNC input determines the mode in which the
TMP05/TMP06 operate.

The CONV/IN input pin is used to determine the rate at which
the TMP05/TMP06 measure temperature in continuously
converting mode and one shot mode. In daisy-chain mode, the
CONV/IN pin operates as the input to the daisy chain.

PRODUCT HIGHLIGHTS

1. The TMP05/TMP06 have an on-chip temperature sensor

that allows an accurate measurement of the ambient
temperature. The measurable temperature range is
–40°C to +150°C.

2. Supply voltage is 3 V to 5.5 V.

3. Space-saving 5-lead SOT-23 and SC-70 packages.

4. Temperature accuracy is typically ±0.5°C. Each part needs

a decoupling capacitor to achieve this accuracy.

5. Temperature resolution of 0.025°C.

6. The TMP05/TMP06 feature a one shot mode that reduces

the average power consumption to 102 µW at 1 SPS.

Rev. B

Information furnished by Analog Devices is believed to be accurate and reliable. However, no
responsibility is assumed by Anal og Devices for its use, nor for any infringements of patents or ot her
rights of third parties that may result from its use. Specifications subject to change without notice.
No license is granted by implication or otherwise under any patent or patent rights of Analog
Devices. Trademarks and registered trademarks are the property of their respective owners.

One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: [phone] www.analog.com
Fax: [phone] ©2006 Analog Devices, Inc. All rights reserved.

TMP05/TMP06

TABLE OF CONTENTS

Features.............................................................................................. 1

Converter Details ....................................................................... 13

Applications....................................................................................... 1

Functional Block Diagram .............................................................. 1

General Description ......................................................................... 1

Product Highlights ........................................................................... 1

Revision History ............................................................................... 2

Specifications..................................................................................... 3

TMP05A/TMP06A Specifications ............................................. 3

TMP05B/TMP06B Specifications .............................................. 5

Timing Characteristics ................................................................ 7

Absolute Maximum Ratings............................................................ 8

ESD Caution.................................................................................. 8

Pin Configuration and Function Descriptions............................. 9

Typical Performance Characteristics ........................................... 10

Theory of Operation ...................................................................... 13

Circuit Information.................................................................... 13

Functional Description.............................................................. 13

Operating Modes........................................................................ 13

TMP05 Output ........................................................................... 16

TMP06 Output ........................................................................... 16

Application Hints ........................................................................... 17

Thermal Response Time ........................................................... 17

Self-Heating Effects.................................................................... 17

Supply Decoupling..................................................................... 17

Layout Considerations............................................................... 18

Temperature Monitoring........................................................... 18

Daisy-Chain Application........................................................... 18

Continuously Converting Application.................................... 24

Outline Dimensions....................................................................... 26

Ordering Guide .......................................................................... 26

REVISION HISTORY

4/06—Rev. A to Rev. B

Changes to Table 1............................................................................ 3

Changes to Table 2............................................................................ 5

Changes to Table 8.......................................................................... 14

Changes to Table 9.......................................................................... 15

10/05—Rev. 0 to Rev. A

Changes to Specifications Table...................................................... 3

Changes to Absolute Maximum Ratings....................................... 8

Changes to Figure 4.......................................................................... 8

Changes to Figure 7........................................................................ 10

Changes to Figure 15...................................................................... 11

Deleted Figure 18............................................................................ 12

Changes to One Shot Mode Section ............................................ 14

Changes to Figure 20...................................................................... 14

Changes to Daisy-Chain Mode Section ...................................... 15

Changes to Figure 23...................................................................... 15

Changes to Equation 5 and Equation 7 ....................................... 17

Added Layout Considerations Section........................................ 18

Updated Outline Dimensions....................................................... 26

Changes to Ordering Guide.......................................................... 26

8/04—Revision 0: Initial Version

Rev. B | Page 2 of 28

TMP05/TMP06

SPECIFICATIONS

TMP05A/TMP06A SPECIFICATIONS

All A grade specifications apply for −40°C to +150°C, VDD decoupling capacitor is a 0.1 µF multilayer ceramic, TA = T
V

= 3.0 V to 5.5 V, unless otherwise noted.

DD

Table 1.

Parameter Min Typ Max Unit Test Conditions/Comments

TEMPERATURE SENSOR AND ADC

Nominal Conversion Rate (One Shot Mode) See Table 7

Accuracy @ VDD = 3.0 V to 5.5 V ±2 °C TA = 0°C to 70°C, VDD = 3.0 V to 5.5 V
±3 °C TA = –40°C to +100°C, VDD = 3.0 V to 5.5 V
±4 °C TA = –40°C to +125°C, VDD = 3.0 V to 5.5 V
±5

1

°C TA = –40°C to +150°C, VDD = 3.0 V to 5.5 V
Temperature Resolution 0.025 °C/5 μs Step size for every 5 μs on TL
TH Pulse Width 40 ms TA = 25°C, nominal conversion rate
TL Pulse Width 76 ms TA = 25°C, nominal conversion rate

Quarter Period Conversion Rate

(All Operating Modes) See Tab le 7
Accuracy

@ VDD = 3.3 V (3.0 V to 3.6 V) ±1.5 °C TA = –40°C to +150°C

@ VDD = 5 V (4.5 V to 5.5 V) ±1.5 °C TA = –40°C to +150°C
Temperature Resolution 0.1 °C/5 μs Step size for every 5 μs on TL
TH Pulse Width 10 ms TA = 25°C, QI conversion rate
TL Pulse Width 19 ms TA = 25°C, QP conversion rate

Double High/Quarter Low Conversion Rate

(All Operating Modes) See Tab le 7
Accuracy

@ VDD = 3.3 V (3.0 V to 3.6 V) ±1.5 °C TA = –40°C to +150°C

@ VDD = 5 V (4.5 V to 5.5 V) ±1.5 °C TA = –40°C to +150°C
Temperature Resolution 0.1 °C/5 μs Step size for every 5 μs on TL
TH Pulse Width 80 ms TA = 25°C, DH/QL conversion rate
TL Pulse Width 19 ms TA = 25°C, DH/QL conversion rate

Long-Term Drift 0.081 °C Drift over 10 years, if part is operated at 55°C
Temperature Hysteresis 0.0023 °C Temperature cycle = 25°C to 100°C to 25°C

SUPPLIES

Supply Voltage 3 5.5 V
Supply Current

Normal Mode2

@ 3.3 V 370 600 μA Nominal conversion rate

@ 5.0 V 425 650 μA Nominal conversion rate
Quiescent2

@ 3.3 V 3 12 μA Device not converting, output is high

@ 5.0 V 5.5 20 μA Device not converting, output is high
One Shot Mode @ 1 SPS 30.9 μA

Average current @ V

DD

nominal conversion rate @ 25°C

37.38 μA

Average current @ V

DD

nominal conversion rate @ 25°C

Power Dissipation 803.33 μW

= 3.3 V, continuously converting at

V

DD

nominal conversion rates @ 25°C

1 SPS 101.9 μW

Average power dissipated for V
one shot mode @ 25°C

186.9 μW

Average power dissipated for V
one shot mode @ 25°C

MIN

= 3.3 V,

= 5.0 V,

to T

DD

DD

,

MAX

= 3.3 V,

= 5.0 V,

Rev. B | Page 3 of 28

TMP05/TMP06

Parameter Min Typ Max Unit Test Conditions/Comments

TMP05 OUTPUT (PUSH-PULL)

Output High Voltage (VOH) VDD − 0.3 V IOH = 800 μA
Output Low Voltage (VOL) 0.4 V IOL = 800 μA
Output High Current (I
Pin Capacitance 10 pF
Rise Time (tLH)5 50 ns
Fal l Time (tHL)

5

RON Resistance (Low Output) 55 Ω Supply and temperature dependent

TMP06 OUTPUT (OPEN DRAIN)3

Output Low Voltage (VOL) 0.4 V IOL = 1.6 mA
Output Low Voltage (VOL) 1.2 V IOL = 5.0 mA
Pin Capacitance 10 pF
High Output Leakage Current (IOH) 0.1 5 μA PWM
Device Turn-On Time 20 ms
Fal l Time (tHL)6 30 ns
RON Resistance (Low Output) 55 Ω Supply and temperature dependent

DIGITAL INPUTS3

Input Current ±1 μA VIN = 0 V to VDD
Input Low Voltage (VIL) 0.3 × VDD V
Input High Voltage (VIH) 0.7 × VDD V
Pin Capacitance 3 10 pF

1

It is not recommended to operate the device at temperatures above 125°C for more than a total of 5% (5,000 hours) of the lifetime of the device. Any exposure beyond

this limit affects device reliability.

2

Normal mode current relates to current during TL. TMP05/TMP06 are not converting during TH, so quiescent current relates to current during TH.

3

Guaranteed by design and characterization, not production tested.

4

It is advisable to restrict the current being pulled from the TMP05 output because any excess currents going through the die cause self-heating. As a consequence,

false temperature readings can occur.

5

Test load circuit is 100 pF to GND.

6

Test load circuit is 100 pF to GND, 10 kΩ to 5.5 V.

OUT

3

4

)

2 mA Typ VOH = 3.17 V with VDD = 3.3 V

50 ns

= 5.5 V

OUT

Rev. B | Page 4 of 28

TMP05/TMP06

TMP05B/TMP06B SPECIFICATIONS

All B grade specifications apply for –40°C to +150°C; VDD decoupling capacitor is a 0.1 µF multilayer ceramic; TA = T
V

= 3 V to 5.5 V, unless otherwise noted.

DD

Table 2.

Parameter Min Typ Max Unit Test Conditions/Comments

TEMPERATURE SENSOR AND ADC

Nominal Conversion Rate (One Shot Mode) See Table 7

Accuracy1

@ VDD = 3.3 V (±5%) ±0.2 ±1 °C TA = 0°C to 70°C, VDD = 3.135 V to 3.465 V

@ VDD = 5 V (±10%) ±0.4 −1/+1.5 °C TA = 0°C to 70°C, VDD = 4.5 V to 5.5 V

@ VDD = 3.3 V (±10%) and 5 V (±10%) ±1.5 °C

±2 °C

±2.5 °C

±4.5

2

°C

= –40°C to +70°C, VDD = 3.0 V to 3.6 V,

T

A

= 4.5 V to 5.5 V

V

DD

= –40°C to +100°C, VDD = 3.0 V to 3.6 V,

T

A

= 4.5 V to 5.5 V

V

DD

= –40°C to +125°C, VDD = 3.0 V to 3.6 V,

T

A

V

= 4.5 V to 5.5 V

DD

= –40°C to +150°C, VDD = 3.0 V to 3.6 V,

T

A

= 4.5 V to 5.5 V

V

DD

Temperature Resolution 0.025 °C/5 μs Step size for every 5 μs on TL
TH Pulse Width 40 ms TA = 25°C, nominal conversion rate
TL Pulse Width 76 ms TA = 25°C, nominal conversion rate

Quarter Period Conversion Rate

See

Table 7

(All Operating Modes)

Accuracy

1

@ VDD = 3.3 V (3.0 V to 3.6 V) ±1.5 °C TA = –40°C to +150°C

@ VDD = 5.0 V (4.5 V to 5.5 V) ±1.5 °C TA = –40°C to +150°C
Temperature Resolution 0.1 °C/5 μs Step size for every 5 μs on TL
TH Pulse Width 10 ms TA = 25°C, QP conversion rate
TL Pulse Width 19 ms TA = 25°C, QP conversion rate

Double High/Quarter Low Conversion Rate

See

Table 7

(All Operating Modes)
Accuracy

1

@ VDD = 3.3 V (3.0 V to 3.6 V) ±1.5 °C TA = –40°C to +150°C

@ VDD = 5 V (4.5 V to 5.5 V) ±1.5 °C TA = –40°C to +150°C
Temperature Resolution 0.1 °C/5 μs Step size for every 5 μs on TL
TH Pulse Width 80 ms TA = 25°C, DH/QL conversion rate
TL Pulse Width 19 ms TA = 25°C, DH/QL conversion rate

Long-Term Drift

0.081 °C Drift over 10 years, if part is operated at 55°C

Temperature Hysteresis 0.0023 °C Temperature cycle = 25°C to 100°C to 25°C

SUPPLIES

Supply Voltage 3 5.5 V
Supply Current

Normal Mode3

@ 3.3 V 370 600 μA Nominal conversion rate

@ 5.0 V 425 650 μA Nominal conversion rate
Quiescent

3

@ 3.3 V 3 12 μA Device not converting, output is high

@ 5.0 V 5.5 20 μA Device not converting, output is high
One Shot Mode @ 1 SPS 30.9 μA

Average current @ V
nominal conversion rate @ 25°C

37.38 μA

Average current @ V
nominal conversion rate @ 25°C

to T

MIN

= 3.3 V,

DD

= 5.0 V,

DD

MAX

,

Rev. B | Page 5 of 28

TMP05/TMP06

Parameter Min Typ Max Unit Test Conditions/Comments

Power Dissipation 803.33 μW

1 SPS 101.9 μW

186.9 μW

TMP05 OUTPUT (PUSH-PULL)

4

Output High Voltage (VOH) VDD − 0.3 V IOH = 800 μA
Output Low Voltage (VOL) 0.4 V IOL = 800 μA
Output High Current (I

OUT

5

)

2 mA Typical VOH = 3.17 V with VDD = 3.3 V
Pin Capacitance 10 pF
Rise Time (tLH)6 50 ns
Fall Time (tHL)6 50 ns
RON Resistance (Low Output) 55 Ω Supply and temperature dependent

TMP06 OUTPUT (OPEN DRAIN)4

Output Low Voltage (VOL) 0.4 V IOL = 1.6 mA
Output Low Voltage (VOL) 1.2 V IOL = 5.0 mA
Pin Capacitance 10 pF
High Output Leakage Current (IOH) 0.1 5 μA PWM
Device Turn-On Time 20 ms
Fall Time (tHL)

7

30 ns
RON Resistance (Low Output) 55 Ω Supply and temperature dependent

DIGITAL INPUTS

4

Input Current ±1 μA VIN = 0 V to VDD
Input Low Voltage (VIL) 0.3 × VDD V
Input High Voltage (VIH) 0.7 × VDD V
Pin Capacitance 3 10 pF

1

The accuracy specifications for 3.0 V to 3.6 V and 4.5 V to 5.5 V supply ranges are specified to 3-Σ performance.

2

It is not recommended to operate the device at temperatures above 125°C for more than a total of 5% (5,000 hours) of the lifetime of the device. Any exposure beyond

this limit affects device reliability.

3

Normal mode current relates to current during TL. TMP05/TMP06 are not converting during TH, so quiescent current relates to current during TH.

4

Guaranteed by design and characterization, not production tested.

5

It is advisable to restrict the current being pulled from the TMP05 output because any excess currents going through the die cause self-heating. As a consequence,

false temperature readings can occur.

6

Test load circuit is 100 pF to GND.

7

Test load circuit is 100 pF to GND, 10 kΩ to 5.5 V.

= 3.3 V, continuously converting at

V

DD

nominal conversion rates @ 25°C
Average power dissipated for V

one shot mode @ 25°C
Average power dissipated for V

one shot mode @ 25°C

= 5.5 V

OUT

= 3.3 V,

DD

= 5.0 V,

DD

Rev. B | Page 6 of 28

TMP05/TMP06

TIMING CHARACTERISTICS

TA = T

Table 3.

Parameter Limit Unit Comments

TH 40 ms typ PWM high time @ 25°C under nominal conversion rate
TL 76 ms typ PWM low time @ 25°C under nominal conversion rate

1

t

3

1

t

4

2

t

4

t5 25 μs max Daisy-chain start pulse width

1

Test load circuit is 100 pF to GND.

2

Test load circuit is 100 pF to GND, 10 kΩ to 5.5 V.

to T

MIN

, VDD = 3.0 V to 5.5 V, unless otherwise noted. Guaranteed by design and characterization, not production tested.

MAX

50 ns typ TMP05 output rise time

50 ns typ TMP05 output fall time

30 ns typ TMP06 output fall time

T

H

T

L

t

3

90%10%

t

4

90% 10%

03340-002

Figure 2. PWM Output Nominal Timing Diagram (25°C)

START PULS E

t

5

03340-003

Figure 3. Daisy-Chain Start Timing

Rev. B | Page 7 of 28

TMP05/TMP06

ABSOLUTE MAXIMUM RATINGS

Table 4.

Parameter Rating

VDD to GND –0.3 V to +7 V
Digital Input Voltage to GND –0.3 V to VDD + 0.3 V
Maximum Output Current (OUT) ±10 mA
Operating Temperature Range

1

–40°C to +150°C
Storage Temperature Range –65°C to +160°C
Maximum Junction Temperature, TJ max 150°C
5-Lead SOT-23 (RJ-5)

Power Dissipation

2

W

= (TJ max – T

MAX

A

3

)/θJA

Thermal Impedance4

θJA, Junction-to-Ambient (Still Air) 240°C/W

5-Lead SC-70 (KS-5)

Power Dissipation2 W

= (TJ max – T

MAX

A

3

)/θJA

Thermal Impedance4

θJA, Junction-to-Ambient 534.7°C/W
θJC, Junction-to-Case 172.3°C/W

IR Reflow Soldering

Peak Temperature 220°C (0°C/5°C)
Time at Peak Temperature 10 sec to 20 sec
Ramp-Up Rate 2°C/s to 3°C/s
Ramp-Down Rate −6°C/s
Time 25°C to Peak Temperature 6 minutes max

IR Reflow Soldering (Pb-Free Package)

Peak Temperature 260°C (0°C)
Time at Peak Temperature 20 sec to 40 sec
Ramp-Up Rate 3°C/sec max
Ramp-Down Rate –6°C/sec max
Time 25°C to Peak Temperature 8 minutes max

1

It is not recommended to operate the device at temperatures above 125°C

for more than a total of 5% (5,000 hours) of the lifetime of the device. Any
exposure beyond this limit affects device reliability.

2

SOT-23 values relate to the package being used on a 2-layer PCB and SC-70

values relate to the package being used on a 4-layer PCB. See Figure 4 for a
plot of maximum power dissipation vs. ambient temperature (T

3

TA = ambient temperature.

4

Junction-to-case resistance is applicable to components featuring a

preferential flow direction, for example, components mounted on a heat
sink. Junction-to-ambient resistance is more useful for air-cooled PCB
mounted components.

).

A

Stresses above those listed under Absolute Maximum Ratings
may cause permanent damage to the device. This is a stress
rating only; functional operation of the device at these or any
other conditions above those indicated in the operational
section of this specification is not implied. Exposure to absolute
maximum rating conditions for extended periods may affect
device reliability.

0.9

0.8

0.7

0.6

0.5

0.4

0.3

0.2

MAXIMUM POWER DISSIPATION (W)

0.1

0

–40

–30

–20

–10

0

10

20

TEMPERATURE (°C)

SOT-23

SC-70

90

80

70

60

50

40

30

100

110

120

130

140

Figure 4. Maximum Power Dissipation vs. Ambient Temperature

03340-0-040

150

ESD CAUTION

ESD (electrostatic discharge) sensitive device. Electrostatic charges as high as 4000 V readily accumulate on
the human body and test equipment and can discharge without detection. Although this product features
proprietary ESD protection circuitry, permanent damage may occur on devices subjected to high energy
electrostatic discharges. Therefore, proper ESD precautions are recommended to avoid performance
degradation or loss of functionality.

Rev. B | Page 8 of 28

TMP05/TMP06

PIN CONFIGURATION AND FUNCTION DESCRIPTIONS

OUT

Table 5. Pin Function Descriptions

Pin No. Mnemonic Description

1 OUT

Digital Output. Pulse-width modulated (PWM) output gives a square wave whose ratio of high-to-low period is
proportional to temperature.

2 CONV/IN

Digital Input. In continuously converting and one shot operating modes, a high, low, or float input determines the
temperature measurement rate. In daisy-chain operating mode, this pin is the input pin for the PWM signal from
the previous part on the daisy chain.

3 FUNC

Digital Input. A high, low, or float input on this pin gives three different modes of operation. For details, see the

Operating Modes section.
4 GND Analog and Digital Ground.
5 VDD

Positive Supply Voltage, 3.0 V to 5.5 V. Using a decoupling capacitor of 0.1 μF as close as possible to this pin is

strongly recommended.

1

TMP05/

CONV/I N

FUNC

Figure 5. Pin Configuration

TMP06

2

TOP VIEW

(Not to Scale)

3

5

V

DD

GND

4

03340-005

Rev. B | Page 9 of 28