ADM805LANZ

Supervisors Overview

The ADM805LANZ is a voltage supervisory circuit manufactured by Analog Devices Inc., designed for monitoring power supply integrity in electronic systems. It operates within a supply voltage range of 4.5 V to 5.5 V and features a threshold voltage of 4.65 V with an overvoltage threshold of 4.75 V. The device provides a reset delay time of 200 ms and includes watchdog timer functionality along with battery backup switchover capabilities. It draws a typical operating current of 100 uA and offers active high output. The component is housed in an SOIC-8 surface-mount package and supports operation across a temperature range of -40°C to +85°C.

Supervisors Feature Summary

• Integrates watchdog timer functionality for system reliability monitoring
• Includes battery backup switchover mechanism for continuous operation during power transitions
• Provides power fail detection to alert systems of voltage anomalies
• Features active high reset output for direct logic interface compatibility

Supervisors Applications

• Microprocessor power supply supervision
• Battery-powered system voltage monitoring
• Industrial control board reset management
• Embedded system watchdog implementation

Supervisors Procurement Notes

Verify the specific suffix 'L' against the manufacturer's official datasheet to confirm the exact threshold voltage and package variant, as suffixes often denote specific electrical or mechanical tolerances. Confirm availability status directly with authorized distributors, as this component may be subject to end-of-life notices or limited stock conditions. Ensure the selected package matches the PCB footprint requirements before finalizing procurement orders.

Supervisors Selection Notes

Select this component when a fixed 4.65 V threshold is required for 5 V logic systems. Consider the 100 uA quiescent current for low-power applications. Verify that the SOIC-8 package fits the design constraints. Evaluate if the integrated watchdog and backup switchover features meet the system's fault tolerance requirements without needing external components.

Supervisors Part Context

The ADM805LANZ belongs to the ADM805 series of supervisory circuits from Analog Devices. This series is engineered for precise voltage monitoring in digital systems. The part integrates multiple protection functions into a single compact package, reducing bill of materials complexity compared to discrete solutions. It serves as a critical component for ensuring stable operation in microprocessor-based designs.

Supervisors Replacement Considerations

Check for ADM805 variants with different thresholds or packages. Verify pinout compatibility with existing designs. Confirm that replacement parts maintain the same watchdog and backup switchover features.