EMC1422 Datasheet | Microchip Technology

Features - Hardware Thermal Shutdown - Triggers dedicated SYS_SHDN pin - Hardware configured range +77°C to +112°C in +1°C steps - Cannot be disabled or modified by software - Support for diodes requiring the BJT/transistor model - Supports 45 nm, 65 nm and 90 nm CPU thermal diodes - Pin patible with ADM1032, MAX6649 and LM99 - Automatically determines external diode type and optimal settings - Resistance Error Correction - External Temperature Monitors - ±1°C Accuracy (+60°C < TDIODE < +100°C) - 0.125°C Resolution - Supports up to 2.2 n F diode filter capacitor - Internal Temperature Monitor - ±2°C Accuracy - 3.3V Supply Voltage - Programmable temperature limits for ALERT - Available in Small 8-pin MSOP Lead-free Ro H pliant Package Applications - Notebook puters - Desktop puters - Industrial - Embedded Applications Description The EMC1422 is a high-accuracy, low-cost, System Management Bus (SMBus) temperature sensor. Advanced features such as Resistance Error Correction (REC), Beta pensation (to support CPU diodes requiring the BJT/transistor model including 45 nm, 65 nm and 90 nm processors) and automatic diode type detection bine to provide a robust solution for plex environmental monitoring applications. Additionally, the EMC1422 provides a hardware programmable system shutdown feature that is programmed at part power-up via two pull-up resistor values and that cannot be masked or corrupted through the SMBus. Each device provides ±1° accuracy for external diode temperatures and ±2°C accuracy for the internal diode temperature. The EMC1422 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 pensation eliminates temperature errors caused by low, variable beta transistors mon in today's fine geometry processors. The automatic beta detection feature monitors the external diode/transistor...