ADM811-3TARTZ-RL

Supervisors Overview

The ADM811-3TARTZ-RL is a voltage supervisory circuit manufactured by Analog Devices Inc., designed for monitoring single-input power rails. It operates within a supply voltage range up to 5.5 V and features an active low output type. The device provides a manual reset function without integrated watchdog or battery backup switching capabilities. Key electrical parameters include a threshold voltage of 3.08 V, a reset delay time of 560 ms, and a typical operating supply current of 15 uA. It is housed in a SOT-143-4 surface-mount package and supports operation across a temperature range from -40 C to +85 C.

Supervisors Feature Summary

• Provides precise voltage supervision with selectable threshold options for standard power supply levels
• Includes built-in debounced manual reset input to prevent system lockup or hazardous states
• Features low power consumption suitable for portable and battery-operated applications

Supervisors Applications

• Microprocessor systems requiring reliable power-on reset
• Controllers and intelligent instruments needing voltage supervision
• Automotive and safety systems demanding robust reset generation

Supervisors Procurement Notes

Verify the exact suffix designation against official Analog Devices documentation, as variations such as REEL or REEL7 indicate specific tape-and-reel packaging configurations. Confirm availability status directly with authorized distributors, as this component may be subject to limited supply or discontinuation notices. Ensure the selected variant matches the required threshold voltage and output polarity specifications for the target application design.

Supervisors Selection Notes

Select this component when a dedicated voltage supervisor with manual reset capability is required for single-rail monitoring. The active low output makes it compatible with logic families expecting a low-active signal. Consider the 560 ms reset delay and 3.08 V threshold to ensure proper timing relative to the monitored power rail's stabilization characteristics during power-up sequences.

Supervisors Part Context

This part belongs to the ADM811/ADM812 series of microprocessor supervisory circuits, serving as a successor to older MAX811/MAX812 designs. The series offers improved performance over temperature ranges while maintaining low power consumption. These devices are engineered to monitor standard PSU voltages like 2.5 V, 3 V, 3.3 V, and 5 V, allowing for specified degradation margins before asserting a reset condition.

Supervisors Replacement Considerations

Publicly confirmed substitute part numbers for this specific component were not identified in the provided source material.