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EMC140x Family of 1°C Temperature Sensors with Beta Compensation
The EMC140x series is a family of high accuracy, low cost, System Management Bus (SMBus) temperature sensors. 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 robust solutions for complex environmental monitoring applications. Each device provides ±1° accuracy for external diode temperatures and ±2°C accuracy for the internal diode temperature.
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 each 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
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Notebook Computers |
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Desktop Computers |
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Industrial |
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Embedded applications |
Features
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Support for diodes requiring the BJT/transistor model |
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Designed to support 45nm processors |
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Support for 90nm and 65nm CPU diodes |
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Automatically determines external diode type and optimal settings |
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Resistance Error Correction |
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External Temperature Monitors
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±1°C Accuracy (60°C < TDIODE < 100°C) |
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0.125°C resolution |
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Anti-parallel diodes for extra diode support |
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Internal Temperature Monitor
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±2°C accuracy |
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3.3V Supply Voltage |
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Programmable temperature limits for ALERT# and THERM# |
| PART NUMBER |  | DESCRIPTION | | PACKAGE |
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| EMC1402 | | Monitors two temperature channels (one external and one internal) | | 8 TSSON |
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| EMC1043 | | Monitors three temperature channels (two external and one internal) | | 10 TSSON |
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| EMC1404 | | Monitors four temperature channels (three external and one internal) | | 10 TSSON |
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