LM62 Datasheet | National Semiconductor

LM62 2.7V, 15.6 m V/˚C, SOT-23 Temperature Sensor June 1999 LM62 2.7V, 15.6 m V/˚C SOT-23 Temperature Sensor General 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 (+15.6 m V/˚C) and has a DC offset of +480 m V. 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 +480 m V to +1884 m V 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, +480 m V 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 130 µA, 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. Applications n n n n n n n n n Cellular Phones puters Power Supply Modules Battery Management FAX Machines Printers HVAC Disk Drives Appliances Key Specifications n Accuracy at 25˚C n Temperature Slope n Power Supply Voltage Range n Current Drain @ 25˚C n Nonlinearity n Output Impedance ± 2.0 or ± 3.0˚C (max) +15.6 m V/˚C +2.7V to +10V 130 µA (max) ± 0.8˚C (max) 4.7 kΩ (max) Features n Calibrated linear scale factor of +15.6 m V/˚C n Rated for full 0˚C to +90˚C range with 3.0V supply n Suitable for remote applications Connection Diagram SOT-23 Typical Application DS100893-1 Top View See NS Package Number MA03B DS100893-2 VO = (+15.6 m V/˚C x T˚C) + 480 m V Ordering Information Order Number LM62BIM3 LM62BIM3X LM62CIM3 LM62CIM3X SOT-23 Device Marking T7B T7B...