EMC1422 1C Temperature Sensor with Hardware Thermal Shutdown Data Brief PRODUCT FEATURES General Description Applications Notebook Computers The EMC1422 is a high accuracy, low cost, System Desktop Computers Management Bus (SMBus) temperature sensor. Industrial Advanced features such as Resistance Error Correction Embedded applications (REC), Beta Compensation (to support CPU diodes requiring the BJT/transistor model including 45nm, Features 65nm and 90nm processors) and automatic diode type Hardware Thermal Shutdown detection combine to provide a robust solution for triggers dedicated SYS SHDN pin complex environmental monitoring applications. hardware configured range 77C to 112C in 1C steps cannot be disabled or modified by software Additionally, the EMC1422 provides a hardware Support for diodes requiring the BJT/transistor model programmable system shutdown feature that is supports 45nm, 65nm, and 90nm CPU thermal diodes. programmed at part power-up via two pull-up resistor Pin compatible with ADM1032, MAX6649, and LM99 values and that cannot be masked or corrupted through Automatically determines external diode type and the SMBus. optimal settings Resistance Error Correction Each device provides 1 accuracy for external diode External Temperature Monitors temperatures and 2C accuracy for the internal diode 1C Accuracy (60C < T < 100C) DIODE temperature. The EMC1422 monitors two temperature 0.125C Resolution channels (one external and one internal). Supports up to 2.2nF diode filter capacitor Internal Temperature Monitor Resistance Error Correction automatically eliminates the 2C accuracy temperature error caused by series resistance allowing 3.3V Supply Voltage greater flexibility in routing thermal diodes. Beta Programmable temperature limits for ALERT Compensation eliminates temperature errors caused by Available in Small 8-pin MSOP Lead-free RoHS low, variable beta transistors common in today s fine Compliant Package 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 1C measurement accuracy provide a low-cost, highly flexible and accurate solution for critical temperature monitoring applications. SMSC EMC1422 PRODUCT PREVIEW Revision 2.0 (08-10-12) 1C Temperature Sensor with Hardware Thermal Shutdown Order Numbers: EMC1422-1-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 (theTerms of Sale Agreemen). 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 SMSCs website at