GENERAL DESCRIPTION
The ADM1033 is a remote and local temperature sensor and fan controller. Its remote channel accurately monitors the temperature of a remote thermal diode, which can be a discrete 2N3904/6 or located on a microprocessor die. The device can monitor its own ambient temperature as well.
FEATURES
1 local and 1 remote temperature channel
±1.5°C accuracy on local and remote channels
Automatic series resistance cancellation on remote
Temperature channels > 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_FAULT output
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