ADM1021ARQZ

Overview

The ADM1021ARQZ is a dual-channel digital temperature sensor manufactured by onsemi, housed in a 16-pin QSOP package. It provides local and remote temperature monitoring with an accuracy of ±1°C for the local sensor and ±3°C for the remote sensor. The device operates within a voltage range of 3V to 5.5V and supports temperatures from 0°C to +100°C. Communication is handled via a two-wire SMBus interface, enabling programmable thresholds and alert signaling.

Feature Summary

• Integrates local and remote sensing channels using novel measurement techniques that eliminate the need for calibration.
• Features a two-wire SMBus compatible serial interface for communication and configuration.
• Supports programmable temperature limits with ALERT output functionality for system protection.

Applications

• Desktop computer thermal management
• Laptop system monitoring
• Industrial controller temperature supervision

Procurement Notes

Verify component authenticity through authorized distributors as this part may be subject to obsolescence or lifecycle changes. Confirm package integrity and pin alignment upon receipt. Ensure storage conditions comply with moisture sensitivity level requirements to prevent damage during soldering processes.

Selection Notes

Select this component when precise dual-zone thermal monitoring is required without external calibration complexity. The integrated SMBus interface simplifies integration into existing digital control architectures. Consider power consumption constraints and operating temperature ranges relative to the specific application environment before finalizing the design.

Part Context

This device belongs to the ADM1021 series of hardware monitors designed for system thermal management. It serves as a foundational component for protecting sensitive electronics from overheating. The series is characterized by its ability to monitor both onboard and remote diode-connected transistors efficiently.

Replacement Considerations

The ADM1023 is documented as the next-generation upgrade product for the ADM1021 series. Verify pin compatibility and register mapping differences when transitioning to newer revisions or alternative manufacturers' equivalents.