EMC1402 1°C Temperature Sensor with Beta Compensation PRODUCT FEATURES Data Brief General Description Applications 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. SMSC EMC1402 Notebook Computers Desktop Computers Industrial Embedded applications Features Support for diodes requiring the BJT/transistor model Pin compatible with ADM1032, MAX6649, and LM99 Automatically determines external diode type and optimal settings Resistance Error Correction External Temperature Monitors — supports 45nm, 65nm, and 90nm CPU thermal diodes. — ±1°C Accuracy (60°C < TDIODE < 100°C) — 0.125°C Resolution Internal Temperature Monitor 3.3V Supply Voltage Programmable temperature limits for ALERT and THERM Available in Small 8-pin MSOP Lead-free RoHS Compliant Package — ±2°C accuracy PRODUCT PREVIEW Revision 2.0 (08-10-12) 1°C Temperature Sensor with Beta Compensation Order Numbers: 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 EMC1402-3-ACZL-TR for 8 pin, MSOP Lead-Free RoHS Compliant package EMC1402-4-ACZL-TR for 8 pin, MSOP Lead-Free RoHS Compliant package Reel size is 4,000 pieces This product meets the halogen maximum concentration values per IEC61249-2-21 For RoHS compliance and environmental information, please visit www.smsc.com/rohs Copyright © 2012 SMSC or its subsidiaries. All rights reserved. Circuit diagrams and other information relating to SMSC products are included as a means of illustrating typical applications. Consequently, complete information sufficient for construction purposes is not necessarily given. Although the information has been checked and is believed to be accurate, no responsibility is assumed for inaccuracies. SMSC reserves the right to make changes to specifications and product descriptions at any time without notice. Contact your local SMSC sales office to obtain the latest specifications before placing your product order. The provision of this information does not convey to the purchaser of the described semiconductor devices any licenses under any patent rights or other intellectual property rights of SMSC or others. All sales are expressly conditional on your agreement to the terms and conditions of the most recently dated version of SMSC's standard Terms of Sale Agreement dated before the date of your order (the "Terms of Sale Agreement"). The product may contain design defects or errors known as anomalies which may cause the product's functions to deviate from published specifications. Anomaly sheets are available upon request. SMSC products are not designed, intended, authorized or warranted for use in any life support or other application where product failure could cause or contribute to personal injury or severe property damage. Any and all such uses without prior written approval of an Officer of SMSC and further testing and/or modification will be fully at the risk of the customer. Copies of this document or other SMSC literature, as well as the Terms of Sale Agreement, may be obtained by visiting SMSC’s website at http://www.smsc.com. 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Revision 2.0 (08-10-12) 2 PRODUCT PREVIEW SMSC EMC1402 1°C Temperature Sensor with Beta Compensation Block Diagram VDD EMC1402 Conversion Rate Register Low Limit Registers Switching Current Internal Temperature Register DN SMBus Interface DP Digital Mux External Temperature Register(s) ΔΣ ADC Limit Comparator Analog Mux Digital Mux High Limit Registers THERM Limit Register THERM Hysteresis Register Internal Temp Diode SMCLK Configuration Register Status Registers Interupt Masking SMDATA ALERT THERM GND Pin Diagram VDD 1 8 SMCLK DP 2 7 SMDATA DN 3 6 ALERT THERM 4 5 GND Figure 1 EMC1402 Pin Diagram SMSC EMC1402 3 PRODUCT PREVIEW Revision 2.0 (08-10-12) D PIN 1 IDENTIFIER AREA (D/2 X E1/2) e 3 DESCRIPTION - DATE RELEASED BY - - SEE SPEC FRONT PAGE FOR REVISION HISTORY Revision 2.0 (08-10-12) REVISION HISTORY REVISION 3 5 c E E1 SEE DETAIL "A" 2 8X b TOP VIEW 4 PRODUCT PREVIEW END VIEW A2 A C SEATING PLANE A1 ccc C SIDE VIEW 3-D VIEW H C GAUGE PLANE 0.25 SEATING PLANE 0° - 8° NOTES: 1. ALL DIMENSIONS ARE IN MILLIMETER. 2. TOLERANCE ON THE TRUE POSITION OF THE LEADS IS ± 0.065mm MAXIMUM. 3. PACKAGE BODY DIMENSIONS "D" AND "E1" DO NOT INCLUDE MOLD PROTRUSIONS OR FLASH. MAXIMUM MOLD PROTRUSIONS OR FLASH IS 0.15 mm (0.006 INCHES) PER END AND SIDE. DIMENSIONS "D" AND "E1" ARE DETERMINED AT DATUM PLANE "H". 4. DIMENSION FOR FOOT LENGTH "L" IS MEASURED AT THE GAUGE PLANE 0.25mm ABOVE THE SEATING PLANE. 5. DETAILS OF PIN 1 IDENTIFIER ARE OPTIONAL, BUT MUST BE LOCATED WITHIN THE ZONE INDICATED. 4 L UNLESS OTHERWISE SPECIFIED DIMENSIONS ARE IN MILLIMETERS AND TOLERANCES ARE: L1 DETAIL "A" DECIMAL ±0.1 X.X X.XX ±0.05 X.XXX ±0.025 THIRD ANGLE PROJECTION 80 ARKAY DRIVE HAUPPAUGE, NY 11788 USA ANGULAR ±1° TITLE NAME DIM AND TOL PER ASME Y14.5M - 1994 MATERIAL SCALE: 3/1 FINISH - PRINT WITH "SCALE TO FIT" DO NOT SCALE DRAWING DATE PACKAGE OUTLINE 8 PIN TSSOP, 3x3 MM BODY, 0.65 MM PITCH DRAWN S.K.ILIEV 7/05/04 CHECKED S.K.ILIEV DWG NUMBER S.K.ILIEV Figure 2 8 Pin MSOP / TSSOP Package SCALE 7/07/04 REV MO-8-TSSOP-3x3 7/05/04 APPROVED STD COMPLIANCE 1:1 JEDEC: MO-187 / D D SHEET 1 OF 1 SMSC EMC1402 1°C Temperature Sensor with Beta Compensation Package Outline