ADM1026JSTZ

Overview

The ADM1026JSTZ is a complete thermal and system management controller manufactured by onsemi. It provides measurement and limit comparison of various system parameters via up to 19 analog channels, including dedicated inputs for +3.3 V, +5 V, ±12 V, and processor core voltages. The device features an internal bandgap temperature sensor with ±3 °C accuracy and supports two remote diode temperature channels. It includes eight fan speed measurement channels, 17 general-purpose logic I/O pins, and outputs for analog (DAC) and PWM fan control. Communication occurs over a 2-wire SMBus with full 1.1 support and packet error checking. An integrated 8 kB EEPROM allows nonvolatile data storage.

Feature Summary

• Provides comprehensive hardware monitoring through multiple analog voltage inputs and dedicated power supply rails.
• Supports precise thermal management using both an on-chip sensor and external remote diodes.
• Enables active cooling control via programmable PWM and analog DAC fan speed outputs.
• Integrates chassis intrusion detection and dual power-on reset generation capabilities.

Applications

• Network servers
• Personal computers
• Telecommunications equipment

Procurement Notes

Verify the specific suffix JSTZ against the manufacturer's current ordering guide to confirm package type and tape-and-reel configuration. Confirm that the component meets RoHS compliance requirements for your target market. Check for any recent product change notices or lifecycle status updates from onsemi prior to finalizing procurement plans.

Selection Notes

Select this component when a microprocessor-based system requires integrated monitoring of multiple voltage rails and temperatures. It is suitable for designs needing SMBus connectivity for centralized management. Consider the available GPIO count and fan control outputs relative to system complexity. Ensure the 48-lead LQFP package fits the PCB layout constraints.

Part Context

This part belongs to the ADM1026 family of system hardware monitors originally developed by SCILLC and later acquired by onsemi. These controllers are designed to replace discrete monitoring solutions in complex electronic systems. The family focuses on providing a single-chip solution for thermal and power management tasks in computing and communication infrastructure.

Replacement Considerations

Check for direct pin-compatible replacements within the onsemi portfolio. Verify if newer revisions of the ADM1026 offer updated packaging or enhanced reliability specifications before sourcing alternative manufacturers.