2

TC02

TC03

PRECISION TEMPERATURE-

TO -VOLTAGE CONVERTERS

PRELIMINARY INFORMATION

TC02/03-04 6/18/97

* 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 perma-

nent 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.

ABSOLUTE MAXIMUM RATINGS *

Supply Voltage ............................................................ 15V

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

Symbol

Parameter

Test Conditions

Min

Typ

Max

Unit

Supply Voltage (TC02)

3.0

—

12

V

Supply Voltage (TC03)

2.2

—

12

V

Supply Current

Note 1

—

40

60

µA

—

—

1.0

mA

Accuracy at Room Temperature

– 2

± 0.5

+2

°C

Accuracy at Minimum Temperature

± 0.5

+5

°C

± 0.5

+5

(Note 2)

Accuracy at Maximum Temperature

– 3

—

+3

°C

– 3

—

+3

(Note 2)

Nonlinearity

Note 3, 4

– 0.8

—

+0.8

°C

Line Regulation

—

80

—

µV/V

Average Slope of Output Voltage

—

10

—

mV/

°C

Maximum Output Voltage

TC02: 3.0V

TC03: 2.2V

——

V

(Note 1)

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)

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

– 50

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.

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 2k

Ω (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 0.1

recommended.