ADM800MARN

Supervisors Overview

The ADM800MARN is a voltage supervisory circuit manufactured by Analog Devices Inc., designed for monitoring power supply integrity in electronic systems. It operates within a maximum supply voltage of 5.5 V and features a threshold voltage of 4.4 V with an overvoltage threshold of 4.5 V. The device provides an active low, push-pull output and includes a watchdog timer functionality. It offers a reset delay time of 280 ms and supports battery backup switching. The component 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

• Integrates a watchdog timer for system reliability monitoring
• Includes battery backup switchover capability
• Features power fail detection warning
• Provides active low push-pull reset output

Supervisors Applications

• Microprocessor supervisor circuits
• Power supply monitoring systems
• Battery-backed embedded systems

Supervisors Procurement Notes

Verify current availability status as the component may be subject to limited supply or special order requirements. Confirm RoHS compliance details prior to integration, as documentation indicates specific regulatory status. Ensure the selected package variant matches the PCB footprint design. Validate that the active low push-pull output configuration aligns with the target logic interface requirements for the intended application design.

Supervisors Selection Notes

Select this component when a dedicated supervisory circuit with integrated watchdog and battery backup features is required. The SOIC-16 package suits surface mount designs needing compact footprints. Consider the 4.4 V threshold and 280 ms reset delay for timing-sensitive applications. Verify compatibility with the 5.5 V maximum supply voltage limit. Ensure the active low output drives the subsequent logic stages correctly without additional buffering.

Supervisors Part Context

This part belongs to the ADM800 series of supervisory circuits from Analog Devices. It shares functional similarities with other members like the ADM800MARNZ but differs in output type and reset delay specifications. The series focuses on providing robust power management supervision for industrial and commercial electronics requiring reliable voltage monitoring and system reset capabilities under varying power conditions.

Supervisors Replacement Considerations

The ADM800MARNZ serves as a related variant within the same family. Differences include output type (open drain vs. push-pull) and reset delay time (200 ms vs. 280 ms). Verify these electrical distinctions against the original design requirements before substitution to ensure signal integrity and timing compliance.