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ADM1023 - High Accuracy Microprocessor System Temperature Monitor

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Part number ADM1023
Manufacturer ON Semiconductor
File Size 220.54 KB
Description High Accuracy Microprocessor System Temperature Monitor
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ADM1023 ACPI‐Compliant, High Accuracy Microprocessor System Temperature Monitor 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. A novel measurement technique cancels out the absolute value of the transistor’s base emitter voltage so that no calibration is required.
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