ADM1023ARQZ-REEL7

Overview

The ADM1023ARQZ-REEL7 is a two-channel digital thermometer and under/overtemperature alarm designed for microprocessor-based systems. It features on-chip and remote temperature sensing with 1°C accuracy on the local channel and 0.125°C resolution on the remote channel. The device supports SMBus communication, includes programmable over/under temperature limits, and operates within a 3 V to 5.5 V supply range. It is housed in a small 16-lead QSOP package.

Feature Summary

• Dual-channel temperature monitoring with high-accuracy local and remote sensing capabilities
• SMBus serial interface for configuration and data retrieval
• Programmable temperature limits with ALERT output signaling
• Low power standby mode with offset registers for system calibration

Applications

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

Procurement Notes

Verify that the ordering suffix REEL7 corresponds to the tape-and-reel packaging format required for automated assembly processes. Confirm that the component meets RoHS compliance standards if environmental regulations apply to the specific manufacturing site or final product requirements. Ensure the lead-free designation matches the soldering profile of the production line.

Selection Notes

Select this component when ACPI-compliant thermal management is required for Pentium III or similar processors. It is suitable for designs needing precise remote diode monitoring with minimal calibration overhead. Consider the 16-lead QSOP package constraints and SMBus interface compatibility with the host controller before integration into the system architecture.

Part Context

This part is an ACPI-compliant microprocessor system temperature monitor manufactured by onsemi. It serves as a next-generation upgrade to previous models, offering enhanced accuracy and lower power consumption. The device integrates analog-to-digital conversion and limit comparison logic directly onto the silicon die.

Replacement Considerations

The ADM1021 is referenced as a predecessor model. Verify pinout compatibility and register mapping differences if substituting older inventory. Check if negative temperature measurement capability is required, as the ADM1023 cannot measure below 0°C.