ADM691AARNZ-REEL7

Supervisors Overview

The ADM691AARNZ-REEL7 is a supervisory circuit manufactured by Analog Devices Inc., designed for monitoring voltage levels in CMOS process applications. It operates within a supply voltage range up to 5.5 V and features a threshold voltage of 4.65 V with an overvoltage threshold of 4.75 V. The device provides power-fail detection and includes a watchdog timer functionality. It utilizes an open-drain output type and lacks manual reset capability. The component supports battery backup switching and offers a reset delay time of 200 ms. It is housed in a SOIC-16 package, suitable for surface mount installation, and functions reliably across an operating temperature range from -40°C to +85°C.

Supervisors Feature Summary

• Integrated watchdog timer for system reliability monitoring
• Power-fail detection with programmable clock capabilities
• Battery backup switching support for continuous operation during power transitions

Supervisors Applications

• Microprocessor system supervision
• Voltage monitoring in CMOS process integrated circuits
• Power supply management requiring fault detection

Supervisors Procurement Notes

Verify the specific suffix REEL7 against official Analog Devices documentation to confirm packaging configuration. Confirm current lifecycle status as End-of-Life or limited availability through authorized channels. Ensure compatibility with existing PCB footprints for SOIC-16 packages. Validate that the open-drain output interface matches the target system requirements without additional pull-up components.

Supervisors Selection Notes

Select this component when a single-input voltage supervisor with watchdog functionality is required. Consider the 4.65 V threshold and 200 ms reset delay for timing-sensitive applications. Evaluate the SOIC-16 package size constraints against available board space. Assess the need for battery backup switching if uninterrupted monitoring is critical during power loss events.

Supervisors Part Context

This part belongs to the ADM691A series of supervisory circuits from Analog Devices. It is specifically packaged in reels (REEL7) for automated assembly processes. The device is distinct from other variants by its specific threshold settings and lack of manual reset input. It serves as a dedicated solution for monitoring single voltage rails in embedded systems.

Supervisors Replacement Considerations

Public confirmed substitute part numbers are not available in the provided source material.