ADM692SQ

Supervisors Overview

The ADM692SQ is a microprocessor supervisory circuit from Analog Devices, designed for power supply monitoring and battery control in CMOS systems. It operates within a maximum supply voltage of 5.5 V and features a threshold voltage of 4.4 V with an accuracy of 1.8%. The device provides a reset delay time of 50 ms and includes a watchdog timer and backup battery switchover functionality. It utilizes an open collector output type and has no manual reset or chip enable signals. The component supports through-hole installation in a CDIP-8 package, with a working power supply current of 1 mA and a power dissipation of 500 mW.

Supervisors Feature Summary

• Integrates precision voltage monitoring with automatic backup battery switchover capabilities for continuous system operation during power transitions.
• Includes a built-in watchdog timer to detect software malfunctions and ensure system reliability in embedded applications.
• Provides power failure warning signals to allow safe data storage or shutdown procedures before main power loss occurs.

Supervisors Applications

• Microprocessor systems requiring reliable power supervision
• Computers and controllers needing automated reset sequences
• Intelligent instruments with critical data protection requirements

Supervisors Procurement Notes

Verify the specific suffix SQ indicates the CDIP-8 through-hole package configuration, as variants like AARN use SOIC packages. Confirm RoHS compliance status, as some listings indicate non-compliance. Check lifecycle status carefully, as this part may be obsolete or end-of-life. Ensure the open-collector output matches your design's pull-up requirements. Validate that the 50 ms reset delay meets your system's timing constraints.

Supervisors Selection Notes

Select this component when a through-hole CDIP-8 package is required for legacy board designs. Choose the ADM692SQ variant specifically for its 4.4 V threshold and 50 ms reset delay characteristics. Consider the open-collector output if active-low signaling with external pull-ups is preferred over push-pull outputs. Evaluate the 1 mA supply current against low-power alternatives if energy efficiency is critical. Verify compatibility with 5 V CMOS logic levels for direct interface without additional level shifting.

Supervisors Part Context

The ADM692 belongs to the ADM690–ADM695 family of supervisory circuits from Analog Devices. This family offers complete single-chip solutions for power supply monitoring and battery control functions in microprocessor systems. The series provides various configurations to satisfy most microprocessor system requirements, including different threshold voltages and output types.

Supervisors Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. Cross-reference with ADM692AARN for surface-mount equivalents, noting differences in package (SOIC-8 vs CDIP-8) and output type (Active High vs Open Collector). Verify functional equivalence regarding threshold voltage and reset delay times before substitution.