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2.7V, SOT-23 or TO-92 Temperature Sensor
National Semiconductor

The LM61 is a precision integrated-circuit temperature sensor that can sense a -30C to +100C temperature range while operating from a single +2.7V supply. The LM61's output voltage is linearly proportional to Celsius (Centigrade) temperature (+10mV/C) and has a DC offset of +600mV. The offset allows reading negative temperatures without the need for a negative supply. The nominal output voltage of the LM61 ranges from +300mV to +1600mV for a -30C to +100C temperature range. The LM61 is calibrated to provide accuracies of 2.0C at room temperature and 3C over the full -25C to +85C temperature range. The LM61's linear output, +600mV offset, and factory calibration simplify external circuitry required in a single supply environment where reading negative temperatures is required. Because the LM61's quiescent current is less than 125?A, self-heating is limited to a very low 0.2C in still air. Shutdown capability for the LM61 is intrinsic because its inherent low power consumption allows it to be powered directly from the output of many logic gates.

???Calibrated linear scale factor of +10 mV/C
???Rated for full -30 to +100C range
???Suitable for remote applications
???UL Recognized Component

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