ADM1032 Datasheet (ON Semiconductor) - Remote and Local System Temperature Monitor

ADM1032, Remote and Local System Temperature Monitor

Positive Supply, 3.0 V to 5.5 V.

Positive Connection to Remote Temperature Sensor.

Negative Connection to Remote Temperature Sensor.

THERM is an open-drain output that can be used to turn a fan on/off or throttle a CPU clock in the event of an overtemperature condition.

Requires pullup to VDD, the s

ADM1032 +15C Remote and Local System Temperature Monitor The ADM1032 is a dual-channel digital thermometer and under/overtemperature alarm intended for use in PCs and thermal management systems.

The device can measure the temperature of a remote thermal diode, which can be located on the processor die or can be a discrete device (2N3904/06), accurate to 1°C.

A novel measurement technique cancels out the absolute value of the transistor’s base emitter voltage so that no calibration is required.

ADM1032 Features

* On-chip and Remote Temperature Sensing

* Offset Registers for System Calibration

* 0.125°C Resolution/1°C Accuracy on Remote Channel

* 1°C Resolution/3°C Accuracy on Local Channel

* Fast (Up to 64 Measurements Per Second)

* 2-wire SMBus Serial Interf