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EMC1412 Datasheet(PDF) 1 Page - SMSC Corporation |
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EMC1412 Datasheet(HTML) 1 Page - SMSC Corporation |
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1 / 47 page  SMSC EMC1412 DATASHEET Revision 1.41 (02-23-12) Datasheet PRODUCT FEATURES EMC1412 Multiple Channel 1°C Temperature Sensor with Beta Compensation General Description The EMC1412 is a high accuracy, low cost, System Management Bus (SMBus) temperature sensor. Advanced features such as Resistance Error Correction (REC), Beta Compensation (to support CPU diodes requiring the BJT/transistor model including 45nm, 65nm and 90nm processors) and automatic diode type detection combine to provide a robust solution for complex environmental monitoring applications. The EMC1412 monitors two temperature channels (one external and one internal). It provides ±1°C accuracy for both external and internal diode temperatures. Resistance Error Correction automatically eliminates the temperature error caused by series resistance allowing greater flexibility in routing thermal diodes. Beta Compensation eliminates temperature errors caused by low, variable beta transistors common in today's fine geometry processors. The automatic beta detection feature monitors the external diode/transistor and determines the optimum sensor settings for accurate temperature measurements regardless of processor technology. This frees the user from providing unique sensor configurations for each temperature monitoring application. These advanced features plus ±1°C measurement accuracy provide a low-cost, highly flexible and accurate solution for critical temperature monitoring applications. Applications Notebook Computers Desktop Computers Industrial Embedded applications Features Programmable SMBus address Support for diodes requiring the BJT/transistor model — supports 45nm, 65nm, and 90nm CPU thermal diodes Automatically determines external diode type and optimal settings Resistance Error Correction External Temperature Monitor — ±1°C max accuracy (20°C < TDIODE < 110°C) — 0.125°C resolution — Supports up to 2.2nF diode filter capacitor Internal Temperature Monitor — ±1°C accuracy — 0.125°C resolution 3.3V Supply Voltage Programmable temperature limits for ALERT and THERM Available in small 8-pin 2mm x 3mm TDFN lead-free RoHS compliant package Available in small 8-pin MSOP lead-free RoHS compliant package |
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