ADM1026JST-REEL7

Overview

The ADM1026JST-REEL7 is a hardware monitor IC manufactured by onsemi, housed in a 48-LQFP (7x7) package. It operates within a supply voltage range of 3V to 5.5V and supports an operating temperature range of 0°C to 100°C. The device features up to 19 analog measurement channels, including internal sensors and external diode inputs, alongside up to 8 fan speed measurement channels and 17 general-purpose logic I/O pins. It communicates via a 2-wire SMBus interface with full support for packet error checking. An integrated 8 kB EEPROM provides non-volatile storage. The component includes analog and PWM fan speed control outputs, chassis intrusion detection, and thermal interrupt capabilities.

Feature Summary

• Integrates multiple analog measurement channels for monitoring system voltages and temperatures using an internal bandgap sensor and remote diode inputs.
• Provides dedicated fan speed measurement inputs and dual control outputs utilizing both pulse width modulation and digital-to-analog conversion.
• Includes an 8 kB on-chip EEPROM for persistent data storage and configuration retention independent of power supply status.
• Supports comprehensive system management through a 2-wire serial bus interface with address configurability and packet error checking.

Applications

• Network servers
• Personal computers
• Telecommunications equipment
• Test equipment and measuring instruments

Procurement Notes

Verify the specific ordering suffix REEL7 to confirm tape-and-reel packaging requirements. Confirm that the component meets project specifications regarding the 48-LQFP footprint and electrical parameters. Ensure compatibility with the required SMBus protocol version and voltage levels. Check for any specific environmental compliance documentation relevant to the manufacturing date code.

Selection Notes

Select this component when a complete hardware monitoring solution is required for microprocessor-based systems. It is suitable for designs needing extensive analog input flexibility and integrated fan control. Consider the 48-pin package size and the availability of onboard EEPROM for configuration storage. Evaluate the need for chassis intrusion detection and multiple reset output options during the design phase.

Part Context

This part belongs to the ADM1026 series of complete thermal system management controllers originally developed by SCILLC and later acquired by onsemi. The series is designed to provide comprehensive monitoring of system parameters in computing and telecommunications environments. The JST suffix typically denotes the specific package type and tape-and-reel packaging format used for automated assembly processes.

Replacement Considerations

Check for direct pin-compatible replacements within the same family or from other manufacturers offering similar thermal management controllers. Verify that any substitute maintains the 48-LQFP package dimensions and SMBus interface compatibility. Ensure the alternative component supports the required number of analog channels and fan control outputs.