ADM802LARNZ-REEL

Supervisors Overview

The ADM802LARNZ-REEL is a microprocessor supervisory circuit manufactured by Analog Devices Inc. It features a fixed reset threshold voltage of 4.65 V and an active-low push-pull output. The device includes a manual reset input, a watchdog timer with a timeout period of 1.4 seconds, and a power-fail warning signal. It operates within a supply voltage range of 2.7 V to 5.5 V, consumes a maximum operating current of 30 µA, and provides a reset delay time of 200 ms. The component is housed in an 8-pin SOIC package and supports industrial temperature ranges.

Supervisors Feature Summary

• Integrates a precision voltage monitor with a fixed 4.65 V threshold for reliable system supervision.
• Includes a built-in watchdog timer with a 1.4-second timeout to detect software malfunctions.
• Provides a dedicated power-fail warning output to alert the system of impending voltage loss.
• Features a manual reset input allowing external control over the reset assertion state.

Supervisors Applications

• Microprocessor system monitoring
• Embedded controller power supervision
• Industrial equipment voltage tracking

Supervisors Procurement Notes

Verify the specific suffix 'ARNZ' against the manufacturer's official datasheet to confirm pinout compatibility and RoHS status. Ensure the selected variant matches the required package type and temperature rating for your design. Cross-reference part numbers carefully as suffixes often indicate packaging or environmental compliance differences rather than functional changes.

Supervisors Selection Notes

Select this component when a fixed 4.65 V threshold is required for systems powered between 2.7 V and 5.5 V. It is suitable for designs needing integrated watchdog and power-fail capabilities without external components. Consider the 8-pin SOIC package constraints and the 30 µA quiescent current for low-power applications.

Supervisors Part Context

This part belongs to the ADM802 series of microprocessor supervisors from Analog Devices. These circuits are designed to provide essential power management functions in embedded systems. The series typically offers various threshold voltages and package options to accommodate different system requirements while maintaining high accuracy and reliability.

Supervisors Replacement Considerations

Check for ADM802 variants with different thresholds or packages. Verify if ADM809 or ADM810 series parts meet the voltage and feature requirements, noting differences in reset delays and watchdog presence.