ADM692AAN

Supervisors Overview

The ADM692AAN is a microprocessor supervisory circuit from the ADM690–ADM695 family, designed for power supply monitoring and battery control. It features a precision voltage monitor with a 4.4 V threshold, active low reset output, and a watchdog timer. The device supports automatic battery backup switchover and CMOS RAM write protection. It operates within a supply voltage range of 4.5 V to 5.5 V, consumes low power, and includes a power fail warning function. The component is housed in an 8-pin SOIC package.

Supervisors Feature Summary

• Integrates microprocessor reset, watchdog timer, and battery backup switchover functions on a single chip.
• Provides precise voltage monitoring with a fixed 4.4 V threshold and power failure warning capability.
• Supports automatic switching between main power and backup battery sources with low switch-on resistance.

Supervisors Applications

• Microprocessor systems requiring reliable power supervision
• Computer hardware and controller boards
• Intelligent instruments with CMOS RAM retention needs

Supervisors Procurement Notes

Verify the specific suffix 'AAN' against the manufacturer's current datasheet to confirm pinout compatibility and electrical specifications. Check for RoHS compliance status as legacy variants may differ. Confirm availability through authorized distributors, as this part number may be subject to discontinuation or lifecycle changes. Ensure the operating temperature range meets system requirements.

Supervisors Selection Notes

Select this component when a fixed 4.4 V reset threshold is required for 5 V logic systems. It is suitable for designs needing integrated watchdog and battery backup management without external components. Consider the SOIC-8 package for surface mount assembly. Verify that the active low reset polarity matches the target microprocessor input requirements.

Supervisors Part Context

The ADM692AAN belongs to the ADM690–ADM695 family of supervisory circuits manufactured by Analog Devices. This family provides comprehensive power management solutions for microprocessor applications, including reset generation, watchdog timing, and battery switchover. The ADM692 variant specifically targets systems requiring a 4.4 V monitoring threshold.

Supervisors Replacement Considerations

The MAX692ACPA+ is a documented equivalent from the Maxim Integrated portfolio, offering similar supervisory functions. Verify package differences (PDIP vs. SOIC) and electrical parameter alignment before substitution.