The ADM1023 is a 2−channel digital thermometer and under/overtemperature alarm for use in personal computers and other systems requiring thermal monitoring and management. Optimized for the Pentium® III, the higher accuracy allows systems designers to safely reduce temperature guard banding and increase system performance. The device can measure the temperature of a microprocessor using a diode−connected PNP transistor, which may be provided on−chip with the Pentium III or similar processors; or it can be a low−cost, discrete NPN/PNP device such as the 2N3904/2N3906.

FEATURES

• Next Generation Upgrade of ADM1021

• On−Chip and Remote Temperature Sensing

• Offset Registers for System Calibration

• 1°C Accuracy and Resolution on Local Channel

• 0.125°C Resolution/1°C Accuracy on Remote Channel

• Programmable Over/Undertemperature Limits

• Programmable Conversion Rate

• Supports System Management Bus (SMBus) ALERT

• 2−Wire SMBus Serial Interface

• 200 μA Max Operating Current (0.25 Conversions/Second)

• 1 μA Standby Current

• 3.0 V to 5.5 V Supply

• Small 16−Lead QSOP Package

• Pb−Free Packages are Available

APPLICATIONS

• Desktop Computers

• Notebook Computers

• Smart Batteries

• Industrial Controllers

• Telecomm Equipment

• Instrumentation