GENERAL DESCRIPTION

The ADM1034 is a dual-channel remote- and local-temperature sensor and fan controller. The remote channels monitor the temperature of two remote thermal diodes, which may be discrete 2N3904/6s or may be located on a microprocessor die. The device also monitors its own ambient temperature.

FEATURES

1 local and 2 remote temperature channels

±1°C accuracy on local and remote channels

Automatic remote temperature channels, up to 1 kΩ

Fast (up to 64 measurements per second)

SMBus 2.0, 1.1, and 1.0 compliant

SMBus address input/LOCATION input to UDID

Programmable over-/undertemperature limits

Programmable fault queue

SMBusALERT output

Fail-safe overtemperature comparator output

Fan speed (RPM) controller

Look-up table for temperature-to-fan-speed control

Linear and discrete options for look-up table

FAN_FAULToutput

THERM input, used to time PROCHOT assertions

REF input, used as reference for THERM (PROCHOT)

3 V to 5.5 V supply

Small 16-lead QSOP package

APPLICATIONS

Desktop and notebook PCs

Embedded systems

Telecommunications equipment

LCD projectors