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FM20
Ultra-Low-Power Analog Temperature Sensor

Features
Analog Output, -11.77mV/ C Range, -55 to 130 C Accuracy, 1 C at 25 C Supply Current, 9 A typical Output Drive, 1 A Self-heating 0.021 C Operating Voltage: 2.4V to 6V

Description
As a precision CMOS temperature sensor, the FM20 is cost-effective for accurate low-power temperature monitoring applications. Output voltage versus temperature is extremely linear. With no load, the supply current is typically 1 A. For normal operation, the load on VOUT should be 5M or less. In a typical application, a remotely mounted FM20 is monitored by a microcontroller with an analog A/D converter input. Alternatively, the FM20 can drive a comparator with a high impedance input. Accuracy is typically 1 C at room temperature; and better than 2.5 C from 0 to 50 C. Available packages are surface mount 5-pin SC70 and 3-pin SOT-23.

Applications
Mobile Phones Computers Battery Management Office Equipment HVAC Power Supply Modules Disk Drives Automotive

Thermal Response
VOUT (mV)

1863.9

391 -50 -40 -25 0 25 50 75 100 125

Temperature ( C)

Temperature ( C)

VOUT 1863.9mV 11.77mV/ C

FM20 Output Voltage vs. Temperature

REV. 1.0.6 1/9/03

FM20 Datasheet Fairchild Download PDF

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FM20 DATASHEET