ADM691AARW

Supervisors Overview

The ADM691AARW is a voltage supervisory circuit manufactured by Analog Devices Inc., designed for monitoring microprocessor systems. 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, a watchdog timer, and battery backup switching capabilities. It utilizes an open-drain output type and includes a reset delay time of 200 ms. The component is housed in a SOIC-16 package, supports surface-mount installation, and functions across a temperature range from -40°C to +85°C.

Supervisors Feature Summary

• Integrates watchdog timer functionality for system reliability
• Includes battery backup switching mechanism
• Provides power-fail detection capability

Supervisors Applications

• Microprocessor system supervision
• Voltage monitoring in embedded systems
• Power management IC applications

Supervisors Procurement Notes

Verify the specific suffix 'W' against official Analog Devices documentation to confirm package details and availability status. Cross-reference the part number with current manufacturer datasheets to ensure compliance with RoHS standards and operational specifications. Confirm end-of-life status if applicable, as some sources indicate potential obsolescence for related variants. Ensure the sourcing channel provides authentic components matching the exact part identification.

Supervisors Selection Notes

Select this component when a single-input voltage supervisor with integrated watchdog and battery backup features is required. Consider the SOIC-16 package and surface-mount mounting style for PCB layout compatibility. Verify that the 4.65 V threshold and 5.5 V maximum supply voltage align with the target system's power rails. Evaluate the 200 ms reset delay and open-drain output characteristics against system timing requirements.

Supervisors Part Context

The ADM691AARW belongs to the ADM691A series of supervisory circuits produced by Analog Devices. This series focuses on providing essential protection and monitoring functions for digital systems. The component falls under the PMIC - Power Management ICs subcategory, specifically serving as a voltage supervisory device. It shares functional similarities with other parts in the family, such as the MAX691A, while offering distinct packaging and performance parameters.

Supervisors Replacement Considerations

The MAX691AMJE is a confirmed substitute part number within the same product family. Both devices share similar supervisory functions, including watchdog timers and battery backup switching. However, differences exist in package types (CDIP-Narrow-16 vs. SOIC-16) and operating temperature ranges. Verify pinout compatibility and electrical parameter alignment before substitution.