FM20 Ver la hoja de datos (PDF) - Fairchild Semiconductor

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FM20

Ultra-Low-Power Analog Temperature Sensor

Fairchild Semiconductor 

FM20

Example Applications Circuits

Typical Applications

5V

PRODUCT SPECIFICATION

FM20

VTemp

100KΩ

1µF

10KΩ

3.9KΩ

IN

REF

1.75V

Serial

Analog-to-Digital

Converter

+

FB

Adjustable

Shunt Voltage

Reference

SERIAL

DATA OUT

CLOCK

ENABLE

Figure 4. Serial Output Temperature to Digital Converter

(The full scale of the A-to-D Converter will typically be limited to +125°C simply by the

number of bits available in the conversion. The FM20 would still be capable of its full output swing.)

5V

FM20

30KΩ

VTemp

_

5KΩ

+

1µF

15KΩ

IN

Parallel Output

Analog-to-Digital

VREF

1.75V

Converter

8

PARALLEL

DATA

OUTPUT

INTR

CS

RD

WR

Figure 5. Parallel Output Temperature to Digital Converter (Full Scale = +125°C)

6

REV. 1.0.6 1/9/03

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