TelCom Semiconductor Inc TC03VNB, TC03VZB, TC02VZB, TC02VNB Datasheet

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PRECISION

 

TEMPERATURE-

PRELIMINARY INFORMATION

TO -VOLTAGE

 

CONVERTERS

TC02

 

 

 

 

 

 

 

 

 

TC03

PRECISION TEMPERATURE-TO-VOLTAGE CONVERTERS

FEATURES

Linearized Temperature-to-Voltage Converters

Direct Centigrade Output Voltage Scaling (TC03)

Wide Temperature Measurement

 

Range (TC02) ...............................

– 20°C to +125°C

Excellent Temperature Converter Linearity ..

0.8°C

 

Over Temperature

 

±2°C

High Temperature Converter Accuracy ..........

 

at 25°C Guaranteed

 

 

Small Packages ................

TO-92-3 and SOT-23B-3

APPLICATIONS

Power Supply Thermal Shut-Down

Temperature-Controlled Fans

Temperature Measurement/Instrumentation

Temperature Regulators

Consumer Electronics

FUNCTIONAL BLOCK DIAGRAM

VCC = 2.2V to 12V

 

 

MICROCONTROLLER

VCC

A/D

 

CONVERTER

VOUT

 

TC03

 

GND

 

GENERAL DESCRIPTION

The TC02/03 temperature sensors furnish a linearized output voltage directly proportional to measured temperature. The TC03 has a temperature measurement range of

20°C to +100°C. Its output voltage is directly calibrated in

degrees Centigrade (i.e. VOUT = 10mV/°C x Temperature °C). An external pull-down resistor to a negative voltage

source is required for temperature measurement below 0°C.

The TC02 has a temperature measurement range of

20°C to +125°C, and operates with a single supply. It has

the same output voltage slope with temperature as the TC03 (10mV/°C). The output voltage range is 300mV at

20°C to 1,750mV at +125°C.

Small size, low cost and low power operation make the TC02/03 suitable for a wide range of general purpose temperature measurement applications.

ORDERING INFORMATION

 

 

 

 

 

 

 

 

 

 

 

Output

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Voltage

 

 

 

Part No.

 

 

Package

 

At 25°C

Temp. Range

 

 

 

 

 

 

 

 

 

 

 

 

 

TC02VNB

 

 

*SOT-23B-3

 

750mV – 20°C to +125°C

 

 

 

 

 

 

 

 

 

 

 

 

 

TC02VZB

 

 

TO-92

 

750mV – 20°C to +125°C

 

 

 

 

 

 

 

 

 

 

 

 

 

TC03VNB

 

 

*SOT-23B-3

 

250mV – 20°C to +100°C

 

 

 

 

 

 

 

 

 

 

 

 

 

TC03VZB

 

 

TO-92

 

250mV – 20°C to +100°C

 

 

 

 

 

 

 

 

 

 

 

 

 

NOTE: *SOT-23B-3 is equivalent to JEDEC (TO-236)

 

 

.

 

 

 

 

 

 

 

 

 

 

 

 

 

PIN CONFIGURATION

 

 

 

 

 

 

 

 

 

*SOT-23B-3

 

 

 

 

TO-92-3

 

 

 

 

(Top View)

 

 

 

 

1

2

3

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

GND

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

3

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

TC02VZB

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

TC03VZB

 

 

 

 

 

 

TC02VNB

 

 

 

 

 

 

 

 

 

 

 

 

TC03VNB

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

1

 

 

 

 

2

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

CC

OUT

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

VCC

 

 

VOUT

V

V GND

 

 

 

 

 

 

 

 

 

 

 

 

 

 

NOTE: *SOT-23B-3 is equivalent

 

 

 

 

 

 

 

 

to JEDEC (TO-236)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

TC02/03-04 6/18/97 TelCom Semiconductor reserves the right to make changes in the circuitry and specifications1 of its devices.

PRELIMINARY INFORMATION PRECISION TEMPERATURETO -VOLTAGE CONVERTERS

TC02

TC03

ABSOLUTE MAXIMUM RATINGS *

Supply Voltage ............................................................

15V

Input Voltage, Any Terminal ..............

– 1.0 to (VCC +0.3V)

Operating Temperature (TC02) .............

– 20°C to +125°C

Operating Temperature (TC03) .............

– 20°C to +100°C

Storage Temperature ............................

– 55°C to +150°C

Lead Temperature (Soldering, 10 sec)

SOT-23B-3 .....................................................

+260°C

TO-92-3 ..........................................................

+300°C

* Static-sensitive device. Unused devices must be stored in conductive material. Protect devices from static discharge and static fields. Stresses above those listed under Absolute Maximum Ratings may cause permanent damage to the device. These are stress ratings only and functional operation of the device at these or any other conditions above those indicated in the operational sections of the specifications is not implied.

Exposure to Absolute Maximum Rating Conditions for extended periods may affect device reliability.

ELECTRICAL CHARACTERISTICS : TA = – 20°C to +125°C, VCC = 5V ±5%, unless otherwise specified.

Symbol

Parameter

Test Conditions

Min

Typ

Max

Unit

 

 

 

 

 

 

 

VCC

Supply Voltage (TC02)

 

3.0

12

V

VCC

Supply Voltage (TC03)

 

2.2

12

V

IS

Supply Current

Note 1

40

60

μA

ISRC

VOUT Output Source Current

 

1.0

mA

 

Accuracy at Room Temperature

TA = 25°C (Note 2)

– 2

± 0.5

+2

°C

 

Accuracy at Minimum Temperature

TC02: TA = – 20°C

– 7

± 0.5

+5

°C

 

 

TC03: TA = – 20°C

– 7

± 0.5

+5

 

 

 

(Note 2)

 

 

 

 

 

 

 

 

 

 

 

 

Accuracy at Maximum Temperature

TC02: TA = +125°C

– 3

+3

°C

 

(Note 2)

TC03: TA = +100°C

– 3

+3

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Nonlinearity

Note 3, 4

– 0.8

+0.8

°C

 

 

 

 

 

 

 

 

Line Regulation

 

80

μV/V

 

 

 

 

 

 

 

AV

Average Slope of Output Voltage

 

10

mV/°C

VOUTMAX

Maximum Output Voltage

TC02: 3.0V VCC 12V

 

 

 

 

 

 

TC03: 2.2V VCC 12V

VCC – 1.2

V

 

 

(Note 1)

 

 

 

 

Notes: 1. VOUT outputs open circuited.

2. Accuracy = Difference between calculated output voltage (10mV/°C x Device case temperature at specified temperature and power supply) and measured output voltage expressed in °C.

3.Nonlinearity = deviation of output voltage versus temperature from the best-fit straight line over the device rated temperature range.

4.Guaranteed by design.

DETAILED DESCRIPTION

A plot of output voltage versus temperature for both the TC02 and TC03 appears in Figure 1. The TC03 can be used with single power supply to measure temperatures from 0°C to 100°C. A pull-down resistor (R1 in Figure 2) must be added from VOUT to the negative power supply for measuring temperatures less than 0°C. The value of the resistor must be chosen to limit the maximum current pulled from the output to the negative supply to

– 50μA (i.e. R1 = VSS/50μA).

OUTPUT STAGE

Both the TC02 and TC03 have Class A output stages capable of sourcing 1mA. These devices have a limited ability to drive heavy capacitive loads. Loads of 50pF (to ground) can be driven directly. For heavier loads, a 2kΩ (or greater) resistor should be placed in series with the output for decoupling. If the TC02/03 is used in a noisy electrical environment, a 0.1μF bypass capacitor from VCC to GND is recommended.

TC02/03-04 6/18/97

2

TelCom Semiconductor Inc TC03VNB, TC03VZB, TC02VZB, TC02VNB Datasheet

PRECISION TEMPERATURETO -VOLTAGE CONVERTERS

PRELIMINARY INFORMATION

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

TC02

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

TC03

 

1.8

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

1.7

TC02: VOUT = (10mV/°C) (Temperature °C) + 500mV

 

 

 

 

 

 

 

 

 

 

 

1.6

TC03: VOUT = (10mV/°C) (Temperature °C)

 

 

 

 

 

 

 

 

 

 

 

 

1.5

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

1.4

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

1.3

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

1.2

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

1.1

 

 

 

TC02

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

(VOLTS)

1.0

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

0.9

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

0.8

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

OUT

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

0.7

 

 

 

 

 

 

 

TC03

 

 

 

 

 

 

 

 

 

V

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

0.6

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

0.5

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

0.4

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

0.3

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

0.2

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

0.1

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

0

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

– 0.1

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

– 0.2

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

– 40

– 30

– 20

–10

0

10

20

30

40

50

60

70

80

90

100

110

120

130

TEMPERATURE (°C)

Figure 1. Output Voltage vs Temperature

VCC = 2.2V to 12.0V MIN.

 

 

 

VCC = 3.0V to 12.0V

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

VCC

 

 

 

 

 

 

VCC

 

 

 

 

 

 

 

 

 

 

V

OUT

 

 

 

V

 

 

 

 

 

 

 

 

VOUT

 

V

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

TC03

 

 

 

OUT

 

TC02

 

OUT

 

 

 

 

 

 

 

 

 

 

GND

 

 

R1

 

GND

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

R1 = VSS/50 A

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

VSS

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

TC03 (– 20°C to +100°C)

TC02 (– 20°C to +125°C)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Figure 2. TC02/03 Power Supply Connections for Full Scale Measurements

 

TC02/03-04 6/18/97

3

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