LM45C

LM45B LM45C SOT-23 Precision Centigrade Temperature Sensors May 1995 LM45B LM45C SOT-23 Precision Centigrade Temperature Sensors General Description The LM45 series are precision integrated-circuit temperature sensors whose output voltage is linearly proportional to the Celsius (Centigrade) temperature The LM45 does not require any external calibration or trimming to provide accuracies of g 2 C at room temperature and g 3 C over a full b 20 to a 100 C temperature range Low cost is assured by trimming and calibration at the wafer level The LM45’s low output impedance linear output and precise inherent calibration make interfacing to readout or control circuitry especially easy It can be used with a single power supply or with plus and minus supplies As it draws only 120 mA from its supply it has very low self-heating less than 0 2 C in still air The LM45 is rated to operate over a b20 to a 100 C temperature range Y Y Y Y Y Y Portable Medical Instruments HVAC Power Supply Modules Disk Drives Computers Automotive Features Y Y Y Y Y Y Y Applications Y Y Y Y Y Y Y Battery Management FAX Machines Printers Calibrated directly in Celsius (Centigrade) Linear a 10 0 mV C scale factor g 3 C accuracy guaranteed Rated for full b20 to a 100 C range Suitable for remote applications Low cost due to wafer-level trimming Operates from 4 0V to 10V Less than 120 mA current drain Low self-heating 0 20 C in still air Nonlinearity only g 0 8 C max over temp Low impedance output 20X for 1 mA...