ADM1034ARQ

Overview

The ADM1034ARQ is a dual-channel remote and local temperature sensor with an integrated fan speed controller. It monitors two remote thermal diodes, which can be discrete transistors or microprocessor die junctions, alongside its own ambient temperature. The device provides ±1°C accuracy on both local and remote channels and supports automatic remote temperature channel configuration for up to 1 kΩ series resistance. It features fast measurement rates of up to 64 per second and includes programmable over- and undertemperature limits with a fault queue.

Feature Summary

• Dual-channel remote and local temperature sensing capability
• Integrated fan speed (RPM) controller with look-up table options
• SMBus 2.0, 1.1, and 1.0 compliant digital interface
• Fail-safe overtemperature comparator output

Applications

• Desktop and notebook PCs
• Embedded systems
• Telecommunications equipment
• LCD projectors

Procurement Notes

Verify the specific suffix ARQ against official Analog Devices documentation to confirm package type and temperature range. Confirm current lifecycle status as components may be obsolete or restricted. Ensure compatibility with SMBus protocols if integrating into existing system architectures. Check for available direct replacements if supply is limited.

Selection Notes

Select this component when precise thermal monitoring of multiple zones is required alongside active cooling control. It is suitable for designs needing accurate local and remote temperature readings with minimal external components. Consider the SMBus interface requirements and voltage supply constraints during circuit design.

Part Context

The ADM1034 belongs to Analog Devices' family of thermal management ICs designed for system protection and performance optimization. It combines high-accuracy temperature sensing with intelligent fan control logic. This integration reduces board space and simplifies thermal management strategies in compact electronic devices.

Replacement Considerations

Direct substitutes include ADM1034ARQZ and ADM1034ARQZ-REEL from Analog Devices. Verify pinout and software compatibility before substitution.