ADM1028ARQ-REEL7

Overview

The ADM1028ARQ-REEL7 is a temperature monitor and fan controller for microprocessor-based systems. It features an on-chip bandgap sensor with ±3°C accuracy and supports external remote diode measurement with ±5°C accuracy. The device includes an 8-bit DAC providing a 0 V to 2.5 V analog output for linear fan speed control, alongside fault-tolerant hardware trip points. Communication is handled via a System Management Bus (SMBus) interface.

Feature Summary

• Integrated dual temperature sensing capability using internal bandgap and external remote diode inputs.
• Analog-to-digital conversion with programmable limit comparison registers for threshold monitoring.
• Hardware-controlled automatic full-speed fan activation upon exceeding safety trip points.
• Programmable ramp rate functionality to manage the rate of change in fan speed output.

Applications

• Network servers
• Personal computers
• Microprocessor-based office equipment

Procurement Notes

Verify that the specific ordering suffix matches the required package configuration and reel specifications. Confirm compliance requirements against current regulatory standards as datasheets may be updated. Ensure the supply voltage range aligns with system design constraints before finalizing procurement decisions.

Selection Notes

Select this component when both ambient and processor temperatures require simultaneous monitoring. The SMBus interface allows integration into standard management architectures. Verify that the analog output drive capabilities meet the requirements of the connected fan circuitry without excessive external buffering.

Part Context

This part belongs to the ADM1028 family of thermal management integrated circuits. It serves as a dedicated hardware monitor designed to protect sensitive electronic components from overheating. The device integrates multiple sensing and control functions into a single compact package.

Replacement Considerations

ADM1028ARQ