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LM45BIM3X Datasheet(PDF) 1 Page - National Semiconductor (TI) |
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LM45BIM3X Datasheet(HTML) 1 Page - National Semiconductor (TI) |
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1 / 8 page  TLH11754 May 1995 LM45BLM45C SOT-23 Precision Centigrade Temperature Sensors General Description The LM45 series are precision integrated-circuit tempera- ture sensors whose output voltage is linearly proportional to the Celsius (Centigrade) temperature The LM45 does not require any external calibration or trimming to provide accu- racies of g2 C at room temperature and g3 C over a full b 20 to a100 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 cali- bration make interfacing to readout or control circuitry espe- cially 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 02 C in still air The LM45 is rated to operate over a b20 to a100 C temperature range Applications Y Battery Management Y FAX Machines Y Printers Y Portable Medical Instruments Y HVAC Y Power Supply Modules Y Disk Drives Y Computers Y Automotive Features Y Calibrated directly in Celsius (Centigrade) Y Linear a 100 mV C scale factor Y g 3 C accuracy guaranteed Y Rated for full b20 to a100 C range Y Suitable for remote applications Y Low cost due to wafer-level trimming Y Operates from 40V to 10V Y Less than 120 mA current drain Y Low self-heating 020 C in still air Y Nonlinearity only g08 C max over temp Y Low impedance output 20X for 1 mA load Connection Diagram SOT-23 TLH11754 – 1 Top View See NS Package Number M03B (JEDEC Registration TO-236AB) SOT-23 Order Device Number Marking Supplied As LM45BIM3 T4B 250 Units on Tape and Reel LM45BIM3X T4B 3000 Units on Tape and Reel LM45CIM3 T4C 250 Units on Tape and Reel LM45CIM3X T4C 3000 Units on Tape and Reel Typical Applications TLH11754 – 3 FIGURE 1 Basic Centigrade Temperature Sensor (a25 Cto a100 C) TLH11754 – 4 Choose R1 ebVS 50 mA VOUTe (10 mV C c Temp C) VOUT ea1000 mV at a100 C ea 250 mV at a25 C eb 200 mV at b20 C FIGURE 2 Full-Range Centigrade Temperature Sensor (b20 Cto a100 C) C1995 National Semiconductor Corporation RRD-B30M75Printed in U S A |
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