Fairchild Semiconductor FM20
the FM20 is cost-effective for accurate low-power temperature monitoring applications. With no load, the supply current is typically 1µA. For normal operation, the load on VOUT should be 5MΩ or less.FEATURES
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● Analog Output, -11.77mV/°C Range, -55 to 130°C Accuracy, ±1°C at 25°C Supply Current, 9µA typical Output Drive, 1µA Self-heating < 0.021°C Operating Voltage: +2.4V to +6V
DESCRIPTION
As a precision CMOS temperature sensor, Output voltage versus temperature is extremely linear. 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
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● 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 PRODUCT SPECIFICATION Pin Assignments VOUT 3 GND 2 N/C 1 GND 3 FM20 4 VDD 5 GND FM20 1 VDD 2 VOUT Pin Descriptions Pin No.