GENERAL DESCRIPTION

The ADT7482¹ is a three-channel digital thermometer and undertemperature/overtemperature alarm for PCs and thermal management systems. It can measure the temperature in two remote locations, such as in the remote thermal diode in a CPU or GPU, or using a discrete diode connected transistor. This device also measures its own ambient temperature.

FEATURES

 1 local and 2 remote temperature sensors

 0.25°C resolution/1°C accuracy on remote channels

 1°C resolution/1°C accuracy on local channel

 Automatically cancels up to 1.5 kΩ (typ) of resistance in series with the remote sensors

 Extended, switchable temperature measurement range 0°C to +127°C (default) or −55°C to +150°C

 2-wire SMBus serial interface with SMBus alert support

 Programmable overtemperature/undertemperature limits

 Offset registers for system calibration

 Up to 2 overtemperature fail-safe THERM outputs

 Small, 10-lead MSOP package

 240 μA operating current, 5 μA standby current

APPLICATIONS

  Desktop and notebook computers

  Industrial controllers

  Smart batteries

  Automotive

  Embedded systems

  Burn-in applications

  Instrumentation