The ADM1023 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 ADM1023 is a two-channel digital thermometer and under/over temperature alarm designed for use in personal computers and other systems requiring thermal monitoring. It is optimized for Pentium III processors and features a novel measurement technique that cancels out the absolute value of the transistor's base emitter voltage, eliminating the need for calibration. The device supports the System Management Bus (SMBus) for communication and includes programmable over/under temperature limits with an ALERT output.
| Temperature Resolution, Local Sensor | 1 °C |
|---|---|
| Temperature Resolution, Remote Sensor | 0.125 °C |
| Supply Voltage Range | 3 V to 3.6 V |
| Operating Temperature Range | -55°C to +125°C |
| Package Type | 16-Lead QSOP |
| SMBus Clock Frequency | 100 kHz |
The local sensor has an accuracy of ±1°C at temperatures between 60°C and 100°C.
No, a novel measurement technique cancels out the absolute value of the transistor's base emitter voltage, so no calibration is required.
The maximum operating current is 200 µA at a conversion rate of 0.25 conversions per second.