ADM1021A - Low Cost Microprocessor System Temperature Monitor Microcomputer

onsemi

Datasheet Details

Part number	ADM1021A
Manufacturer	onsemi
File Size	212.69 KB
Description	Low Cost Microprocessor System Temperature Monitor Microcomputer
Datasheet	ADM1021A Datasheet

📁 Similar Datasheet

Part Number	Description	Manufacturer
ADM1021A	System Temperature Monitor Microcomputer	Analog Devices
ADM1021	Low Cost Microprocessor System Temperature Monitor	Analog Devices
ADM1020	8-Lead/ Low-Cost/ System Temperature Monitor	Analog Devices
ADM1022	Low-Cost PC Temperature Monitor and Fan Control ASIC	Analog Devices
ADM1023	ACPI-Compliant High-Accuracy Microprocessor System Temperature Monitor	Analog Devices

Other Datasheets by onsemi

Part Number	Description
ADM1023	High Accuracy Microprocessor System Temperature Monitor
ADM1024	System Hardware Monitor
ADM1025	Low Cost PC Hardware Monitor ASIC
ADM1025A	Low Cost PC Hardware Monitor ASIC
ADM1026	Complete Thermal System Management Controller

Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

View original datasheet text

ADM1021A Low Cost Microprocessor System Temperature Monitor Microcomputer The ADM1021A is a two-channel digital thermometer and under/overtemperature alarm, intended for use in personal computers and other systems requiring thermal monitoring and management. The device can measure the temperature of a microprocessor using a diode-connected PNP transistor, which can be provided on-chip with the Pentium III or similar processors, or 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. The second measurement channel measures the output of an on-chip temperature sensor to monitor the temperature of the device and its environment.