DESCRIPTION

· The ADT7461 is a dual-channel digital thermometer and under/over temperature alarm designed for PCs and thermal management systems.
· It features series resistance cancellation, configurable ALERT output, and an extended, switchable temperature measurement range.
· It can measure remote thermal diode temperature to ±1°C and ambient temperature to ±3°C.
· The device communicates via a 2-wire SMBus interface and has an SMBus address of 0x4C.

FEATURES

· On-chip and remote temperature sensor with 0.25°C resolution/1°C accuracy on remote channel and 1°C resolution/3°C accuracy on local channel.
· Automatically cancels up to 3 kΩ of resistance in series with remote diode for noise filtering.
· Extended temperature measurement range switchable between 0°C to +127°C (default) and –55°C to +150°C.
· Pin- and register-compatible with the ADM1032.
· Programmable over/undertemperature limits and offset registers for system calibration.
· Up to two overtemperature fail-safe THERM outputs.
· Available in small 8-lead SOIC NB or 8-lead MSOP packages.
· Low operating current of 170 µA and standby current of 5.5 µA.
· Pb-Free device.

APPLICATIONS

· Desktop and notebook computers.
· Industrial controllers.
· Smart batteries.
· Embedded systems.
· Instrumentation.