ADM1021ARQ-REEL7

Overview

The ADM1021ARQ-REEL7 is a dual-channel digital temperature monitor and undertemperature/overtemperature alarm designed for microprocessor-based systems. Manufactured by Analog Devices, it utilizes a two-wire SMBus serial interface for communication. The device features on-chip and remote temperature sensing capabilities with high accuracy, eliminating the need for calibration through novel measurement techniques that cancel out absolute base-emitter voltage values. It supports programmable conversion rates and alert outputs.

Feature Summary

• Dual-channel temperature monitoring with on-chip and remote sensing
• SMBus compatible two-wire serial interface
• Programmable overtemperature and undertemperature limits
• No calibration required for accurate measurements

Applications

• Desktop computers
• Notebook computers
• Smart batteries
• Industrial controllers
• Telecom equipment

Procurement Notes

Verify the manufacturer designation carefully, as this part number is associated with Analog Devices but requested under onsemi. Confirm the specific suffix REEL7 matches the required tape-and-reel packaging configuration. Ensure the component meets the necessary environmental compliance standards for your specific application requirements before finalizing procurement.

Selection Notes

Select this component when precise thermal management is required for microprocessor systems without complex calibration overhead. It is suitable for applications needing both local and remote temperature monitoring via a standard serial interface. Consider its operating voltage range and package constraints relative to the system design.

Part Context

This device belongs to the ADM1021 family of low-cost microprocessor system temperature monitors. It serves as a dedicated thermal management solution, often replacing discrete sensor circuits. The ADM1023 is noted as a next-generation upgrade within this product line, offering enhanced features while maintaining compatibility with similar system architectures.

Replacement Considerations

The ADM1023 is documented as the next-generation upgrade product for the ADM1021 series. Verify pinout and register compatibility if substituting with newer variants from the same manufacturer family.