2.7V, 15.6mV/deg C, SOT-23 Temperature Sensor
National Semiconductor
Description
The LM62 is a precision integrated-circuit temperature sensor that can sense a 0°C to +90°C temperature range while operating from a single +3.0V supply. The LM62's output voltage is linearly proportional to Celsius (Centigrade) temperature (+15.6mV/°C) and has a DC offset of +480mV. The offset allows reading temperatures down to 0°C without the need for a negative supply. The nominal output voltage of the LM62 ranges from +480mV to +1884mV for a 0°C to +90°C temperature range. The LM62 is calibrated to provide accuracies of ±2.0°C at room temperature and +2.5°C/-2.0°C over the full 0°C to +90°C temperature range. The LM62's linear output, +480mV offset, and factory calibration simplify external circuitry required in a single supply environment where reading temperatures down to 0°C is required. Because the LM62's quiescent current is less than 130µA, self-heating is limited to a very low 0.2°C in still air. Shutdown capability for the LM62 is intrinsic because its inherent low power consumption allows it to be powered directly from the output of many logic gates.
Features
Calibrated linear scale factor of +15.6 mV/°C
Rated for full 0°C to +90°C range with 3.0V supply
Suitable for remote applications
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