ADM695AN

Supervisors Overview

The ADM695AN is a microprocessor supervisory circuit in a 16-pin PDIP package. It monitors supply voltage with a threshold of 4.65 V and accuracy of 1.7%. Operating from 4.75 V to 5.5 V, it features open-collector outputs, a watchdog timer, and battery backup switching. The device operates between -40°C and +85°C with a reset delay of 200 ms.

Supervisors Feature Summary

• Integrates power supply monitoring, watchdog timer, and automatic battery backup switchover for complete system supervision.
• Provides precise voltage monitoring with low standby current consumption suitable for battery-operated applications.
• Features extremely fast gating of chip enable signals to protect memory and logic during power transitions.

Supervisors Applications

• Microprocessor systems requiring comprehensive power management
• Computers and controllers needing reliable reset generation
• Intelligent instruments with battery backup requirements

Supervisors Procurement Notes

Verify the specific suffix AN indicates the PDIP-16 through-hole package and commercial/industrial temperature range. Confirm RoHS compliance status via the manufacturer datasheet before procurement. Ensure the design supports the open-collector output configuration and external pull-up requirements specified in the electrical characteristics.

Supervisors Selection Notes

Select this component when a single-chip solution for voltage monitoring, watchdog timing, and battery backup is required. It serves as a direct functional replacement for legacy MAX695 devices. Consider the PDIP-16 package constraint and the fixed 4.65 V threshold against system voltage rails. Verify that the 200 ms reset delay meets the processor startup timing requirements.

Supervisors Part Context

Part of the ADM690–ADM695 family of supervisory circuits designed for microprocessor systems. This series consolidates multiple power management functions into a single IC, reducing component count and board space compared to discrete solutions.

Supervisors Replacement Considerations

The MAX695 is a documented predecessor with identical functionality. Verify pinout compatibility and ensure the target application does not require manual reset inputs or different threshold voltages available in other family members.

Supervisors FAQ

Does the ADM695AN include a manual reset input?

No, the standard ADM695 configuration does not include a manual reset input; it relies on automatic detection of power failures and watchdog timeouts.

What is the function of the battery backup feature?

The circuit automatically switches power to CMOS RAM and critical logic from the main supply to a backup battery when the main supply drops below the threshold, preventing data loss.