12

LTC1392

© LINEAR TECHNOLOGY CORPORATION 1995

1392f LT/TP 0497 7K • PRINTED IN USA

APPLICATI

TYPICAL

Linear Technology Corporation

1

2

3

4

8

7

6

5

GND

P1.4

P1.3

P1.2

CLK

CS

LTC1392

1392 TA05

5V

5V

MPU

(e.g., 8051)

LT1004-1.2

* 1% FILM RESISTOR

IDEAL OUTPUT (V) =

–11.15mV/

°C • TEMPERATURE + 1.371

TEMPERATURE RANGE: 38

°C TO 80°C ±4°C

ERT-D2FHL103S DIVIDER OUTPUT VOLTAGE

VS TEMPERATURE

TEMPERATURE (

°C)

20

1.5

1.4

1.3

1.2

1.1

1.0

0.9

0.8

0.7

0.6

0.5

0.4

0.3

0.2

0.1

0

50

70

30

40

60

80

IDEAL OUTPUT (V) =

–11.15mV/

°C • TEMPERATURE + 1.371

ACTUAL

DIVIDER

OUTPUT

R2*

1.8k

ASSUMING 3%

β AND

R1*

6.8k

Measuring a Secondary Temperature with an External Thermistor

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