LM61

LM61 2.7V, SOT-23 or TO-92 Temperature Sensor June 1999 LM61 2.7V, SOT-23 or TO-92 Temperature Sensor General Description The LM61 is a precision integrated-circuit temperature sensor that can sense a −30˚C to +100˚C temperature range while operating from a single +2.7V supply. The LM61’s output voltage is linearly proportional to Celsius (Centigrade) temperature (+10 mV/˚C) and has a DC offset of +600 mV. The offset allows reading negative temperatures without the need for a negative supply. The nominal output voltage of the LM61 ranges from +300 mV to +1600 mV for a −30˚C to +100˚C temperature range. The LM61 is calibrated to provide accuracies of ± 2.0˚C at room temperature and ± 3˚C over the full −25˚C to +85˚C temperature range. The LM61’s linear output, +600 mV 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 µA, self-heating is limited to a very low 0.2˚C 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. Applications n n n n n n n n n Cellular Phones Computers Power Supply Modules Battery Management FAX Machines Printers HVAC Disk Drives Appliances Key Specifications n Accuracy at 25˚C n Accuracy for −30˚C to +100˚C n Accuracy for −25˚C to +85˚C n Temperature Slope n Power Supply Voltage Range...