EMC1402
1°C Temperature Sensor with Beta Compensation
General Description
The EMC1402 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.
Each device provides ±1° accuracy for external diode temperatures and ±2°C accuracy for the internal diode temperature. The EMC1402 monitors two temperature channels (one external and one internal).
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.
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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Pin compatible with ADM1032, MAX6649, and LM99 |
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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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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# |
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Small 8-pin MSOP Lead-free RoHS Compliant package |
Applications
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Notebook Computers |
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Desktop Computers |
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Industrial |
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Embedded applications |
EMC1402 Block Diagram
ORDERING INFORMATION
Order Number(s):
EMC1402-1-ACZL-TR for 8 Pin, MSOP Lead-Free RoHS Compliant Package
EMC1402-2-ACZL-TR for 8 Pin, MSOP Lead-Free RoHS Compliant Package
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 EMC1402 Data Sheet, Application Notes,
Drivers and Design Tools
| Description |
File Name |
File Size |
Date |
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| EMC1402 Data Brief |
1402db.pdf |
202K |
2/5/08 |
| EMC1402 Data Sheet |
1402.pdf |
582K |
2/5/08 |
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| Evaluation Board |
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EVB-EMC1402
Schematic, PDF
Bill of Materials, PDF
Users Guide, PDF
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evb1002_1033_1402sch.pdf
evb1402bom.pdf
evb1002_1033_1402user.pdf
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131K
78K
506K |
8/20/07
5/16/07
8/21/07 |
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| Application Notes |
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| Application Note 10-14: Using Temperature Sensing Diodes with EMC Devices - Remote Sensors |
an1014.pdf |
162K |
7/18/06 |
| Application Note 12-14: Remote Thermal Sensing Diode Selection Guide |
an1214.pdf |
216K |
9/9/05 |
| Application Note 13-19: Resistance Error Correction |
an1319.pdf |
210K |
11/11/05 |
| Application Note 14-0: SMBus Temperature Sensors from SMSC in an I2C System |
an140.pdf |
119K |
12/12/05 |
| Application Note 16-13: EMC1402 Comparison to Pin Compatible Devices |
an1613.pdf |
103K |
7/31/07 |
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| White Paper |
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| White Paper 1-7: Portable Design Beyond ON/OFF Fan Control |
wp17.pdf |
175K |
8/11/05 |
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| Other Information |
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| Using the Adobe® Acrobat® Reader |
aacrobat.html |
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