ADM706RAR

Supervisors Overview

The ADM706RAR is a microprocessor supervisory circuit designed for monitoring 3 V or 3.3 V power supplies. It features a precision voltage monitor with a threshold of 2.63 V and draws 100 μA quiescent current. The device provides an independent watchdog timer with a 1.6-second timeout and includes a debounced manual reset input. The reset output is active low, ensuring a guaranteed valid RESET signal when VCC equals 1 V.

Supervisors Feature Summary

• Integrates a precision supply voltage monitor with a fixed 2.63 V threshold for accurate supervision.
• Includes an independent watchdog timer with a 1.6-second timeout to prevent software lockups.
• Features a debounced manual reset (MR) input for user-initiated system resets.
• Delivers an active low reset output that remains valid down to a supply voltage of 1 V.

Supervisors Applications

• Microprocessor systems requiring reliable power supervision
• Computers and controllers needing watchdog functionality
• Battery-operated portable instruments

Supervisors Procurement Notes

Verify the specific suffix and package variant against the official Analog Devices datasheet, as the base part number covers multiple configurations. Confirm RoHS compliance status and manufacturing origin, as availability may vary by region. Ensure the selected version matches the required reset polarity and package type for your design.

Supervisors Selection Notes

Select this component when a fixed 2.63 V threshold and active low output are required. It serves as a direct upgrade for older MAX706R designs. Consider the 100 μA quiescent current for battery life calculations. Verify that the 1.6-second watchdog timeout meets the application's timing constraints.

Supervisors Part Context

The ADM706RAR belongs to the ADM706/ADM708 family of voltage monitoring circuits from Analog Devices. This series is engineered for critical microprocessor monitoring in industrial and consumer electronics. The R suffix specifically denotes the active low reset output configuration within the product line.

Supervisors Replacement Considerations

The ADM706P/R/S/T and ADM708R/S/T are documented as superior upgrades for the MAX706P/R/S/T and MAX708R/S/T respectively. Designers migrating from Maxim Integrated parts should verify pin compatibility and electrical specifications before substitution.