ADM707AN

Supervisors Overview

The ADM707AN is a microprocessor supervisory circuit designed for monitoring 5 V power supplies and batteries. It features a precision voltage monitor with a threshold of 4.65 V and provides an active high reset output. The device guarantees valid RESET signals when VCC is as low as 1 V, ensuring reliable system protection during power transitions. It includes a debounced manual reset input compatible with TTL/CMOS logic levels. The component operates within a supply voltage range up to 5.5 V and maintains a quiescent current of 190 μA. It offers a fixed reset pulse width of 200 ms and functions across an industrial temperature range from -40°C to +85°C.

Supervisors Feature Summary

• Provides precise supervision of 5 V power rails with a dedicated 4.65 V threshold.
• Ensures system integrity by guaranteeing valid reset states at minimum 1 V supply.
• Integrates a debounced manual reset input for direct user intervention compatibility.

Supervisors Applications

• Microprocessor systems requiring critical supply monitoring
• Computers and controllers needing power-fail detection
• Intelligent instruments demanding low battery warnings

Supervisors Procurement Notes

Verify the specific suffix and package configuration against current Analog Devices documentation, as legacy part numbers may have variations in RoHS compliance or pinout definitions. Confirm availability status through authorized distributors, noting that older manufacturing runs may be subject to end-of-life constraints. Ensure the selected variant matches the required thermal and electrical specifications for the target application environment before finalizing procurement orders.

Supervisors Selection Notes

Select this component for applications requiring simple, cost-effective supervision of 5 V logic systems without complex watchdog requirements. It is suitable where an active high reset signal is necessary and manual reset functionality via a debounced input is preferred. Consider the 190 μA quiescent current for power-sensitive designs and verify that the 4.65 V threshold aligns with the specific tolerance requirements of the monitored power rail.

Supervisors Part Context

The ADM707AN belongs to the ADM705/ADM706/ADM707/ADM708 series of low-cost microprocessor supervisory circuits manufactured by Analog Devices. This family is engineered to replace earlier Maxim Integrated MAX705-MAX708 devices, offering superior performance characteristics while maintaining compatibility. The ADM707 specifically focuses on voltage monitoring with an active high output, distinguishing it from variants that offer active low outputs or independent watchdog timers.

Supervisors Replacement Considerations

The MAX707CPA+ serves as a functional substitute within the same supervisory category. Verify pin compatibility and electrical parameter alignment, particularly regarding the 4.65 V threshold and reset timing, before implementing any cross-manufacturer replacement in existing designs.