ADT7408 - Analog Devices

ADT7408 12-Bit Digital Temperature Sensor

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. There is an open-drain EVENT# output that is active when the monitoring temperature exceed.

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 CAPA.