ADM1030ARQZ-REEL

Overview

The ADM1030ARQZ-REEL is an ACPI-compliant intelligent temperature monitor and PWM fan controller designed for microprocessor-based systems. It features a two-channel digital thermometer with ±1°C accuracy on the remote diode channel and 0.25°C resolution on the local sensor. The device includes a dedicated automatic fan speed control loop that adjusts PWM duty cycles between 33% and 100% based on temperature measurements, independent of CPU software intervention. It communicates via a 2-wire SMBus interface and supports TACH input for fan speed monitoring.

Feature Summary

• Automatic Fan Speed Control Loop
• Dual Temperature Monitoring Channels
• SMBus Communication Interface
• Programmable Thermal Alerts

Applications

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

Procurement Notes

Verify the specific REEL suffix against the manufacturer's current ordering guide to confirm tape-and-reel packaging specifications. Confirm RoHS compliance status as manufacturing processes may evolve. Check for any recent Product Change Notices (PCN) regarding package dimensions or material composition updates prior to finalizing procurement orders.

Selection Notes

Select this component when designing thermal management for Pentium III or similar architectures requiring precise temperature regulation. Ensure the system design accommodates the required pull-up resistors for the open-drain SMBus and interrupt outputs. Verify that the available supply voltage range aligns with the system's power rails and that the QSOP-16 package fits the PCB layout constraints.

Part Context

This part belongs to the ADM1030 family of intelligent thermal monitors manufactured by onsemi. It serves as a specialized solution for computer and telecommunications thermal management, replacing discrete temperature sensing and fan control circuits with a single integrated chip. The device integrates analog-to-digital conversion, limit comparators, and serial bus interfaces into one package.

Replacement Considerations

Consult official substitution guides for direct replacements. Generic equivalents may lack specific ACPI compliance or exact pinout compatibility.