ADM1022ARQ-REEL7

Overview

The ADM1022ARQ-REEL7 is a digital temperature sensor and thermal monitor manufactured by Analog Devices Inc. It features an on-chip diode-connected PNP transistor for local temperature sensing with ±1°C accuracy without calibration. The device includes two remote channels capable of measuring temperatures from external transistors or diodes with ±3°C accuracy. It communicates via a 2-wire SMBus interface compatible with System Management Bus standards. The component operates within a supply voltage range of 3 V to 5.5 V and supports programmable overtemperature and undertemperature limits with alert outputs.

Feature Summary

• On-chip and remote temperature sensing capabilities
• SMBus serial interface support
• Programmable overtemperature/undertemperature limits
• No calibration necessary for on-chip sensor

Applications

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

Procurement Notes

Verify the specific suffix REEL7 indicates reel packaging when sourcing. Confirm RoHS compliance status through official documentation. Check for obsolete status as previous variants like ADM1021A may have been discontinued. Ensure compatibility with existing SMBbus controller designs.

Selection Notes

Select this component for systems requiring accurate thermal monitoring without calibration overhead. Compare against ADM1021 for legacy compatibility. Verify that the 16-lead QSOP package fits the PCB layout constraints. Ensure the operating temperature range meets system environmental requirements.

Part Context

This part belongs to the ADM1021 family of low-cost microprocessor system temperature monitors. It serves as a successor or variant to earlier models, maintaining similar functionality while potentially offering updated packaging or minor electrical improvements. It is designed for ACPI-compatible thermal management in computing environments.

Replacement Considerations

ADM1021AARQ is a direct functional equivalent within the same product family. Verify pinout compatibility before substitution. Check if the REEL7 packaging variant is available for the replacement part.