TC1024 datasheet(2/6 Pages) TELCOM

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TC1023

TC1024

PRECISION TEMPERATURE-TO-VOLTAGE

CONVERTERS WITH SHUTDOWN MODE

PRELIMINARY INFORMATION

TC1023/1024-05 6/12/97

ELECTRICAL CHARACTERISTICS : TA = – 20°C to +125°C, VCC = 5V ±5%, GND = 0V, unless otherwise specified.

Symbol

Parameter

Test Conditions

Min

Typ

Max

Unit

VCC

Supply Voltage (TC1023)

2.2

—

(TC1024)

3.0

—

Supply Current

CE = VIL

—40

µA

(Note 1)

ICE

Shutdown Current

CE = VIH

—1

µA

(Note 2)

VIH

CE Input Logic HIGH Level

2.0

—

VIL

CE Input Logic LOW Level

—

0.8

ICE

CE Input Leakage Current

CE = VIH or VIL

–1

—

µA

tREC

Recovery Time from Shutdown

CE = step from VIH to VIL

—

400

—

µsec

(Note 3)

VOUT

VOUT Output Voltage (TC1024)

TA = – 20°C and +125°C

270

—

1780

VOUT Output Voltage (TC1023)

TA = – 20°C and +100°C

– 230

—

1030

Circuit per Figure 1:

R1 = 240k

Ω

VSS = – 12V

(Note 1)

ISRC

VOUT Output Source Current

—

1.0

Accuracy at Room Temperature

TA = +25°C

– 2

—

°C

(Note 4)

Accuracy at Minimum Temperature

TC1023: TA = – 20°C

– 4

—

°C

TC1024: TA = – 20°C

(Note 4)

Accuracy at Maximum Temperature

TC1023: TA = +100°C

– 3

—

°C

TC1024: TA = +125°C

(Note 4)

Nonlinearity

Note 5

– 0.8

—

+0.8

°C

Line Regulation

—

µV/V

Average Slope of Output Voltage

—

mV/

°C

VOUTMAX

Maximum Output Voltage

TC1023: 2.2V

≤ VCC ≤ 12V

——

VCC – 1.2

TC1024: 3.0V

≤ VCC ≤ 12V

(Note 1)

* 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

Input Voltage, Any Terminal .............. – 1.0 to (VCC +0.3V)

Operating Temperature (TC1023) ......... – 20

°C to +100°C

Operating Temperature (TC1024) ......... – 20

°C to +125°C

Storage Temperature ............................ – 55

°C to +150°C

Lead Temperature (Soldering, 10 sec) ................. +300

°C

NOTES: 1. VOUT outputs open circuited.

2. VOUT is 0V through approximately 100kΩ to ground when CE = VIH.

3. Recovery time is the period required for VOUT to rise from 0V (shutdown state) to the voltage corresponding to the measured

temperature driving a 100pF capacitive load.

4. 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.

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

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