ADT7408

www.DataSheet4U.com ±2°C Accurate, 12-Bit Digital Temperature Sensor ADT7408 FEATURES 12-bit temperature-to-digital converter ±2°C accuracy Operation from −20°C to +125°C Operation from 3 V to 3.6 V 240 μA typical average supply current Selectable 1.5°C, 3°C, 6°C hysteresis SMBus-/I2C®-compatible interface Dual-purpose event pin: comparator or interrupt 8-lead LFCSP_VD, 3 mm × 3 mm (JEDEC MO-229 VEED-4) package Complies with JEDEC standard JC-42.4 memory module Thermal sensor component specification FUNCTIONAL BLOCK DIAGRAM VDD 8 12- / 10-Bit DECIMATOR TEMPERATURE SENSOR LPF 1-BIT – + DIGITAL COMPARATOR 7 EVENT# + REFERENCE – ∑-∆ CLK AND TIMING GENERATION 1-BIT DAC CAPABILITY REGISTER CONFIGURATION REGISTER ALARM TEMP UPPER BOUNDARY TRIP REGISTER ALARM TEMP LOWER BOUNDARY TRIP REGISTER CRITICAL TEMP REGISTER TEMPERATURE REGISTER 5 6 ADDRESS POINTER REGISTER MANUFACTURER’S ID REGISTER ADT7408 A0 1 A1 2 A2 3 APPLICATIONS Memory module temperature monitoring Isolated sensors Environmental control systems Computer thermal monitoring Thermal protection Industrial process control Power system monitors FACTORY RESERVED REGISTER SMBus/I²C INTERFACE 4 SDA SCL 05716-001 Vss Figure 1. GENERAL DESCRIPTION The ADT7408 is the first digital temperature sensor that complies with JEDEC standard JC-42.4 for the mobile platform memory module. The ADT7408 contains a band gap temperature sensor and a 12-bit ADC to monitor and digitize the temperature to a resolution of 0.0625°C....