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LM50 データシート(PDF) 1 Page - National Semiconductor (TI) |
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LM50 データシート(HTML) 1 Page - National Semiconductor (TI) |
1 / 7 page LM50 SOT-23 Single-Supply Centigrade Temperature Sensor General Description The LM50 is a precision integrated-circuit temperature sen- sor that can sense a −40˚C to +125˚C temperature range us- ing a single positive supply. The LM50’s output voltage is lin- early proportional to Celsius (Centigrade) temperature (+10 mV/˚C) and has a DC offset of +500 mV. The offset al- lows reading negative temperatures without the need for a negative supply. The ideal output voltage of the LM50 ranges from +100 mV to +1.75V for a −40˚C to +125˚C temperature range. The LM50 does not require any external calibration or trimming to provide accuracies of ±3˚C at room temperature and ±4˚C over the full −40˚C to +125˚C temperature range. Trimming and calibration of the LM50 at the wafer level as- sure low cost and high accuracy. The LM50’s linear output, +500 mV offset, and factory calibration simplify circuitry re- quired in a single supply environment where reading nega- tive temperatures is required. Because the LM50’s quiescent current is less than 130 µA, self-heating is limited to a very low 0.2˚C in still air. Applications n Computers n Disk Drives n Battery Management n Automotive n FAX Machines n Printers n Portable Medical Instruments n HVAC n Power Supply Modules Features n Calibrated directly in degree Celsius (Centigrade) n Linear + 10.0 mV/˚C scale factor n ±2˚C accuracy guaranteed at +25˚C n Specified for full −40˚ to +125˚C range n Suitable for remote applications n Low cost due to wafer-level trimming n Operates from 4.5V to 10V n Less than 130 µA current drain n Low self-heating, less than 0.2˚C in still air n Nonlinearity less than 0.8˚C over temp Connection Diagram Order SOT-23 Supplied As Number Device Marking LM50BIM3 T5B 1000 Units on Tape and Reel LM50CIM3 T5C 1000 Units on Tape and Reel LM50BIM3X T5B 3000 Units on Tape and Reel LM50CIM3X T5C 3000 Units on Tape and Reel Typical Application SOT-23 DS012030-1 Top View See NS Package Number MA03B DS012030-3 FIGURE 1. Full-Range Centigrade Temperature Sensor (−40˚C to +125˚C) July 1999 © 1999 National Semiconductor Corporation DS012030 www.national.com |
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同様の説明 - LM50 |
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