EMC1428 Datasheet | SMSC

FEATURES General Description The EMC1428 is a high accuracy, low cost, System Management Bus (SMBus) temperature sensor. Advanced features such as Resistance Error Correction (REC), Beta pensation (to CPU diodes requiring the BJT or transistor model) and automatic diode type detection bine to provide a robust solution for plex environmental monitoring applications. Additionally, the EMC1428 provides a hardware programmable system shutdown feature that is programmed at part power-up via a single TRIP_SET voltage channel 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 EMC1428 monitors up to eight temperature channels (up to seven external and one internal). Applications - Notebook puters - Desktop puters - Industrial - Embedded Applications Features - Hardware Thermal Shutdown - triggers dedicated SYS_SHDN pin - hardware configured range 65°C to 127°C in 1°C steps - cannot be disabled or modified by software - Designed to support 45nm, 65nm, and 90nm CPU diodes - Supports diodes requiring the BJT or transistor model - Resistance Error Correction (up to 100 Ohms) - Up to seven External Temperature Monitors - ±1°C Accuracy (60°C < TDIODE < 100°C) - 0.125°C Resolution - Supports up to 2.2n F filter capacitor - Anti-parallel diodes for extra diode support and pact design - Internal Temperature Monitor - ±2°C accuracy - 3.3V Supply Voltage - Available in a 16 pin 4mm x 4mm QFN lead-free Ro HS pliant package - Programmable temperature limits for ALERT Block Diagram TRIP_SET SYS_SHDN DP1 DN1 DP2 / DN3 DN2 / DP3 DP4 / DN5 DN4 / DP5 DP6 / DN7 DN6 / DP7 External Temp Diode Inputs Antiparallel diode Analog Mux Internal Temp Diode Critical / Thermal Shutdown Logic 11 bit Σ Δ...