GENERAL DESCRIPTION
The ADT74611 is a dual-channel digital thermometer and under/over temperature alarm, intended for use in PCs and thermal management systems. It is pin- and register-compatible with the ADM1032. The ADT7461 has three additional features: series resistance cancellation (where up to 3 kΩ (typical) of resistance in series with the temperature monitoring diode may be automatically cancelled from the temperature result, allowing noise filtering); 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/3°C accuracy on local channel
   Automatically cancels up to 3 kΩ (typ) of resistance in series
      with remote diode to allow noise filtering
   Extended, switchable temperature measurement range 0°C
      to +127°C (default) or –55°C to +150°C
   Pin- and register-compatible with ADM1032
   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 SOIC or MSOP package
   170 µA operating current, 5.5 µA standby current

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