ADM690AARN-REEL

Supervisors Overview

The ADM690AARN-REEL is a voltage supervisory circuit manufactured by Analog Devices, distributed by Rochester Electronics. It operates within a supply voltage range of 4.75 V to 5.5 V with a threshold voltage of 4.65 V and an overvoltage threshold of 4.75 V. The device features a reset delay time of 280 ms and consumes 100 uA of operating current. It utilizes an SOIC-8 package and supports an active high output type. The component is designed for industrial temperatures ranging from -40 C to +85 C, with a power dissipation rating of 500 mW.

Supervisors Feature Summary

• Provides precise voltage monitoring with a fixed 4.65 V threshold for reliable system supervision.
• Integrates battery backup switch functionality to manage power transitions during supply failures.
• Delivers an active high output signal to indicate valid power conditions without requiring manual reset inputs.

Supervisors Applications

• Microprocessor power supply monitoring in embedded systems
• Battery backup switching for CMOS RAM write protection
• Power failure detection in industrial control units

Supervisors Procurement Notes

Verify the source authenticity when purchasing from third-party distributors like Rochester Electronics, as these are often sourced from excess inventory or surplus channels rather than direct factory allocation. Confirm the specific reel packaging configuration matches your automated assembly requirements. Ensure the component lot date code aligns with your manufacturing timeline to avoid obsolescence risks associated with discontinued or limited availability parts.

Supervisors Selection Notes

Select this component when a fixed 4.65 V threshold is required for 5V CMOS logic families. The active high output simplifies interface design compared to open-collector alternatives. Consider the SOIC-8 package constraints for PCB layout. Verify that the 280 ms reset delay meets the startup timing requirements of the target microprocessor or memory devices in the application circuit.

Supervisors Part Context

This part belongs to the ADM690 series of supervisory circuits, which are designed for microprocessor reset applications. The REEL suffix indicates tape and reel packaging suitable for high-volume automated assembly processes. Analog Devices originally developed this family to provide comprehensive power management functions including reset generation and battery backup control for reliable system operation.

Supervisors Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. Cross-reference with ADM690 variants such as ADM690AARMZ for different package options, ensuring electrical parameters like threshold voltage and reset delay remain compatible with the existing design specifications.