ADM800MARN-REEL

Supervisors Overview

The ADM800MARN-REEL 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 a reset delay time of 280 ms and includes a watchdog timer functionality along with battery backup switching capabilities. It draws a typical operating supply current of 100 uA and dissipates up to 700 mW of power. The component supports active low, push-pull output types and lacks manual reset or chip enable signals. It is housed in an SOIC-16 package and functions reliably across a temperature range from -40 C to +85 C.

Supervisors Feature Summary

• Integrates watchdog timer and battery backup switch for comprehensive system protection
• Provides active low push-pull output for direct interface with digital logic
• Includes power failure detection capability for enhanced reliability

Supervisors Applications

• Power supply monitoring in embedded systems
• Microcontroller reset generation in industrial control units
• Battery backup switching in portable electronic devices

Supervisors Procurement Notes

Verify the specific suffix REEL against official Analog Devices documentation to confirm tape-and-reel packaging configuration. Confirm RoHS compliance status as indicated in current datasheets. Ensure compatibility with existing PCB footprint for SOIC-16 packages. Validate that the 5.5 V maximum supply rating aligns with target application requirements. Check for any obsolescence notices or lifecycle changes directly from the manufacturer.

Supervisors Selection Notes

Select this component when a dedicated supervisory circuit with integrated watchdog and backup switching is required. Consider the 4.4 V threshold and 280 ms delay for timing-sensitive applications. Evaluate the 100 uA supply current against power budget constraints. Ensure the SOIC-16 package fits the design constraints. Compare performance against other ADM800 series variants if different thresholds or packages are needed.

Supervisors Part Context

The ADM800MARN-REEL belongs to the ADM800 series of voltage supervisory circuits from Analog Devices. This series focuses on providing reliable reset generation and system monitoring for CMOS processes. The part integrates multiple protection features into a single IC, reducing component count in power management designs. It is distinct from operational amplifiers or multiplexers in the same manufacturer's portfolio due to its specific focus on voltage supervision and system control.

Supervisors Replacement Considerations

Consult official Analog Devices cross-reference tools for verified substitutes. Verify pinout compatibility and electrical parameters such as threshold voltage and reset delay before substitution.