This document introduces the features and characteristics of the ADM1028 product. The product is a remote thermal diode monitor with linear fan control.
The ADM1028 is a low-cost temperature monitor and fan controller designed for microprocessor-based systems. It features an on-chip temperature sensor for ambient monitoring and the ability to measure external remote diode sensors, allowing for processor temperature monitoring in single-processor systems. The device communicates measured values and limit comparisons via the System Management Bus (SMBus).
| Supply Voltage | 3.0 V to 5.5 V |
|---|---|
| Supply Current | 2 mA (Typ) |
| Internal Sensor Accuracy | +3 °C |
| External Diode Sensor Accuracy | +5 °C |
| Resolution | 1 °C |
| Output Voltage Range | 0 to 2.5 V |
| Clock Frequency | 100 kHz |
| Maximum Junction Temperature | 150°C |
The ADM1028 is ideal for network servers, personal computers, microprocessor-based office equipment, and test equipment.
Yes, it allows the temperature of a remote sensor diode to be measured for monitoring processor temperature.
The device contains a DAC for fan speed control and includes a Ramp Rate Register to control the rate of change of fan speed.