ADM1026JSTZ-R7

Overview

The ADM1026JSTZ-R7 is a complete system hardware monitor for microprocessor-based systems, providing measurement and limit comparison of various system parameters. It features up to 19 analog measurement channels, including dedicated inputs for +3.3 V, +5 V, ±12 V power supplies, and processor core voltage. The device includes an on-chip temperature sensor with ±3 °C accuracy and supports remote diode temperature sensing. It offers up to 8 fan speed measurement channels and provides both analog (DAC) and PWM fan speed control outputs. Communication is handled via a 2-wire serial system management bus (SMBus) with full SMBus 1.1 support, including packet error checking.

Feature Summary

• Provides comprehensive thermal and voltage monitoring through multiple analog input channels and integrated sensors.
• Supports active fan speed regulation using both pulse-width modulation and analog voltage outputs.
• Integrates nonvolatile memory for persistent data storage independent of power supply status.
• Facilitates system security through chassis intrusion detection capabilities.

Applications

• Network servers
• Personal computers
• Telecommunications equipment

Procurement Notes

Verify the specific ordering suffix R7 confirms the reel packaging format required for automated assembly processes. Ensure the JSTZ designation aligns with the lead-free and RoHS compliance standards mandated by your manufacturing facility. Confirm that the 48-lead LQFP package dimensions match your printed circuit board layout constraints before finalizing procurement orders.

Selection Notes

Select this component when designing systems requiring extensive voltage monitoring across standard server rails alongside precise thermal management. The inclusion of dual remote temperature inputs allows for accurate monitoring of critical processor or heatsink locations. Consider the available general-purpose I/O pins if additional digital control signals are needed within the same footprint.

Part Context

This component belongs to the ADM1026 family of hardware monitors originally developed by SCILLC and later acquired by ON Semiconductor. These devices are engineered to replace discrete monitoring circuits, reducing bill-of-materials complexity. The series is widely utilized in computing infrastructure where reliable system health tracking is essential for operational stability and maintenance.

Replacement Considerations

Direct pin-to-pin replacements may include other ADM1026 variants with different packaging options such as TQFP. Verify register compatibility if substituting with older revisions, as software drivers may require updates to accommodate minor functional differences between production batches.