ADM8691ARN-REEL

Supervisors Overview

The ADM8691ARN-REEL is a supervisory circuit from the ADM8690–ADM8695 family, manufactured by Analog Devices Inc. It operates within a supply voltage range of 4.75 V to 5.5 V and monitors a single input with a threshold of 4.65 V. The device features an open-drain output, a watchdog timer with selectable periods of 100 ms or 1.6 seconds, and automatic battery backup switching. It consumes 200 µA of operating supply current and dissipates up to 600 mW. The component is housed in a 16-lead Standard Small Outline Package (SOIC_N) and supports operation from -40°C to +85°C.

Supervisors Feature Summary

• Integrated watchdog timer with configurable timeout intervals for system reliability
• Automatic power switching between main supply and backup battery sources
• Open-drain reset output compatible with standard logic interfaces
• Low standby current consumption for energy-efficient monitoring

Supervisors Applications

• Microprocessor power supply monitoring
• Battery backup power management systems
• Watchdog timer implementation in embedded controllers

Supervisors Procurement Notes

Verify the specific suffix REEL7 against the official datasheet to confirm tape-and-reel packaging specifications. Ensure the SOIC-16 package dimensions match your PCB footprint requirements. Confirm that the 4.65 V threshold aligns with your system's voltage monitoring needs. Check for RoHS compliance status in the latest manufacturer documentation before procurement.

Supervisors Selection Notes

Select this component when a dedicated supervisor with integrated watchdog functionality is required. The fixed 4.65 V threshold suits 5 V systems. Consider the 16-pin SOIC package for board space constraints. Verify that the open-drain output can drive the necessary load without external pull-ups if required by the design.

Supervisors Part Context

The ADM8691 is part of the ADM8690–ADM8695 series of supervisory circuits designed for complete power supply monitoring and battery control solutions. These devices integrate multiple functions typically requiring separate components, simplifying design complexity. The ARN variant specifically denotes the 16-lead SOIC package option within this family.

Supervisors Replacement Considerations

The ADM8691ARNZ is listed as a direct substitute for the ADM8691ARN. Verify pin compatibility and electrical parameters before substitution.