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ADM1021 (sensor)

Added by ALMICO on 25 may 2001

The ADM1021 is a two-channel digital thermometer and under/over temperature 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 may be provided on-chip in the case of the Pentium II 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. The ADM1021 communicates over a two-wire serial interface compatible with SMBus standards. Under and over temperature limits can be programmed into the devices over the serial bus, and an ALERT output signals when the on-chip or remote temperature is out of range. This output can be used as an interrupt, or as an SMBus alert.

Feature Date Vote Voted by Comment
Power 16 aug 2018 6 MARCELO3DHEN
13 aug 2018 2 MEHDI1990
26 oct 2009 10 JON75
Reliability 16 aug 2018 5 MARCELO3DHEN
13 aug 2018 5 MEHDI1990
26 oct 2009 10 JON75
11 dec 2005 1 SIEWIE
Ease of use 16 aug 2018 6 MARCELO3DHEN
13 aug 2018 9 MEHDI1990
26 oct 2009 10 JON75
11 dec 2005 1 SIEWIE
Features 16 aug 2018 3 MARCELO3DHEN
13 aug 2018 8 MEHDI1990
26 oct 2009 10 JON75
11 dec 2005 1 SIEWIE

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