The ADM1029 is a dual PWM fan controller and temperature monitor designed for high availability systems. It features software programmable and automatic fan speed control, allowing independent control of the fan speed without CPU intervention after initial setup. The product also includes temperature sensors, an analog multiplexer, limit comparators, and other features.
The ADM1029* is a device that provides software programmable and automatic fan speed control, as well as remote and local temperature monitoring. It supports backup and redundant fans, hot swapping, and cascading fault outputs to allow up to eight units in a system.
Key features include dual fan speed measurement, an internal temperature-to-digital converter with 1°C resolution, and analog-to-digital converters for external sensors. The device operates from a supply voltage of 3.0 V to 5.5 V and is available in a small 24-lead QSOP package.
| Supply Voltage Range | 3.0 V to 5.5 V |
|---|---|
| Internal Sensor Accuracy | +1 +3 °C |
| Resolution (Temperature) | 1 °C |
| External Diode Sensor Accuracy | +3 +5 °C |
| ADC Total Unadjusted Error | +1 % |
| Analog Input Conversion Time | 11.6 ms |
| External Temperature Conversion Time | 185.6 ms |
| Fan RPM Accuracy | +6 % |
| Full-Scale Count (RPM) | 255 |
| Internal Clock Frequency | 56.4 to 63.6 kHz |
| Maximum Junction Temperature | 150°C |
The device operates with a supply voltage between 3.0 V and 5.5 V.
The internal temperature-to-digital converter has a resolution of 1 °C.
Up to eight ADM1029* devices can be addressed in a system using the address pin.
Yes, the ADM1029* supports the hot swapping of fans.