GENERAL DESCRIPTION
The ADT7461A1 is a dual-channel digital thermometer and undertemperature/overtemperature alarm, intended for use in PCs and thermal management systems. It is pin- and registercompatible with the ADM1032 and the ADT7461. A feature of the ADT7461A is series resistance cancellation, where up to 1.5 kΩ (typical) of resistance in series with the temperature monitoring diode can be automatically cancelled from the temperature result, allowing noise filtering. The ADT7461A has a configurable ALERT output and an extended, switchable temperature measurement range.

FEATURES
   On-chip and remote temperature sensor
   0.25°C resolution/1°C accuracy on remote channel
   1°C resolution/1°C accuracy on local channel
   Automatically cancels up to 1.5 kΩ (typical) of resistance in
      series with remote diode to allow noise filtering
   Extended, switchable temperature measurement range
      0°C to +127°C (default) or –64°C to +191°C
   Pin- and register-compatible with ADM1032 and ADT7461
   2-wire SMBus serial interface with SMBus alert support
   Programmable over/under temperature limits
   Offset registers for system calibration
   Up to two overtemperature fail-safe THERM outputs
   Small 8-lead MSOP
   240 μA operating current, 5 μA standby current

APPLICATIONS
   Desktop and notebook computers
   Industrial controllers
   Smart batteries
   Automotive
   Embedded systems
   Burn-in applications
   Instrumentation