ADM1817-R22ARTZ-R7

Supervisors Overview

The ADM1817-R22ARTZ-R7 is a microprocessor supervisory circuit manufactured by Analog Devices Inc. It operates within a supply voltage range up to 5.5 V and features a fixed reset threshold of 2.18 V. The device provides an active high push-pull output with a minimum reset timeout of 100 ms. It is designed for simple reset or power-on reset applications without manual reset or watchdog timer capabilities. The component supports surface mount installation in a SOT-23-3 package and functions reliably across an operating temperature range of -40°C to +105°C.

Supervisors Feature Summary

• Provides reliable low-cost voltage monitoring with a dedicated reset output for system supervision.
• Features an active high push-pull output stage suitable for direct interface with digital logic inputs.
• Designed specifically for monitoring standard power supply voltages including 2.5 V, 3 V, 3.3 V, and 5 V rails.

Supervisors Applications

• Monitoring 2.5 V, 3 V, 3.3 V, and 5 V power supply voltages in embedded systems
• Generating reset signals for microprocessors and microcontrollers during power-up events
• Supervising battery-powered devices requiring stable voltage thresholds

Supervisors Procurement Notes

Verify the specific suffix 'R22' indicates the 2.18 V threshold variant when sourcing replacements. Confirm the 'RL7' or 'R7' packaging designation matches reel specifications for automated assembly lines. Ensure compatibility with existing PCB footprints for the SOT-23-3 package. Check current availability status as distribution channels may vary for this specific part number configuration.

Supervisors Selection Notes

Select this component when an active high output is required rather than the more common active low configuration found in many supervisors. The 2.18 V threshold is distinct from other variants in the ADM1817 series, such as those with 2.63 V or 4.62 V thresholds. Consider the 100 ms minimum reset timeout for application timing requirements. The wide industrial temperature range supports operation in harsh environments compared to commercial grade alternatives.

Supervisors Part Context

This part belongs to the ADM1817 series of voltage supervisors from Analog Devices. The series offers various threshold options to monitor different standard voltage rails. The R22 suffix denotes the specific 2.18 V trip point. The ARTZ package code confirms the SOT-23-3 surface mount form factor. This family is designed for cost-sensitive applications requiring basic power supervision without complex programmability.

Supervisors Replacement Considerations

ADM1817-R22AKSZ-R7: Confirmed public substitute with identical 2.18 V threshold and active high push-pull output characteristics.