ADM805LARNZ-REEL

Supervisors Overview

The ADM805LARNZ is a voltage supervisory circuit manufactured by Analog Devices Inc., designed for monitoring single power supply rails. It operates within a supply voltage range of 4.5 V to 5.5 V and features a precise threshold voltage of 4.65 V. The device provides an active high reset output with a typical reset delay time of 200 ms. It incorporates a watchdog timer and battery backup switch functionality, ensuring system integrity during power fluctuations. The component supports manual reset input and includes power-fail detection capabilities. It is available in an 8-SOIC surface-mount package and functions reliably across an industrial temperature range from -40°C to +85°C.

Supervisors Feature Summary

• Integrated watchdog timer for automated system recovery
• Battery backup switchover mechanism for continuous operation
• Power-fail warning signal generation capability

Supervisors Applications

• Microprocessor system supervision
• Embedded controller power monitoring
• Industrial control unit voltage tracking

Supervisors Procurement Notes

Verify the specific suffix designation against official documentation, as standard listings may indicate tube packaging while reel variants exist. Confirm current lifecycle status due to potential obsolescence notices. Ensure compatibility with existing board layouts regarding the SOIC-8 footprint and pin configuration 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 integrated watchdog and backup features if system resilience against transient faults is critical. Evaluate the active high output polarity against downstream logic requirements. Compare operating temperature ranges against environmental conditions to ensure reliable performance throughout the intended operational lifespan.

Supervisors Part Context

This part belongs to the ADM805 series of supervisory circuits, which are engineered for precision voltage monitoring in digital systems. The series typically offers various threshold options and output configurations to suit different application needs. The L variant denotes specific electrical characteristics optimized for standard CMOS logic interfaces. This family serves as a foundational solution for maintaining system stability in embedded designs.

Supervisors Replacement Considerations

Consult official substitution lists for equivalent parts with matching threshold voltages and package types. Verify functional compatibility regarding watchdog and backup features before replacing.