ADM1030ARQ

Overview

The ADM1030ARQ is an ACPI-compliant digital thermometer and PWM fan controller designed for computer thermal management. It features two temperature channels with internal and external sensing capabilities, providing ±1°C accuracy. The device includes a programmable pulse-width modulation output for fan speed control and supports SMBus communication. Operating within a 3V to 5.5V supply range, it offers shutdown mode for power reduction and is housed in a 16-pin QSOP package.

Feature Summary

• Intelligent temperature monitoring with high accuracy for reduced guardbanding
• Pulsewidth Modulated (PWM) fan control with programmable frequency and duty cycle
• SMBus interface with Automatic Remote Address (ARA) support
• Integrated local sensor and remote diode measurement capability

Applications

• Notebook PCs
• Network Servers
• Personal Computers
• Telecommunications Equipment

Procurement Notes

Verify the manufacturer source carefully, as this component was originally from Analog Devices and later transferred to onsemi. Confirm the specific suffix matches your design requirements. Check current availability status as legacy components may have limited stock or obsolescence notices. Ensure compatibility with existing ACPI implementations in your target system.

Selection Notes

Select this component when precise thermal monitoring and automated fan control are required for Pentium III class systems or similar architectures. Consider the ±1°C accuracy for applications needing tight thermal margins. Evaluate the SMBus integration needs against available system controllers. Verify voltage supply constraints align with the 3V to 5.5V operating range.

Part Context

This part belongs to the ADM1030 family of intelligent temperature monitors. It was historically manufactured by Analog Devices before being acquired by onsemi. The device serves as a specialized solution for thermal management in computing environments, bridging the gap between simple thermistors and complex microcontroller-based monitoring systems.

Replacement Considerations

Check for direct substitutes from onsemi such as the ADM1030ARQZ. Verify pinout and register compatibility before substitution. Review any changes in packaging or electrical specifications due to the manufacturer transition.