ADM823RYRJ-R7

Supervisors Overview

The ADM823RYRJ-R7 is a supervisory circuit manufactured by Analog Devices Inc., designed for voltage monitoring and system reset management. It integrates a watchdog timer with manual reset functionality in a compact SOT-23-5 surface-mount package. The device operates within a supply voltage range of up to 5.5 V and features an active low push-pull output. Key electrical characteristics include a threshold voltage of 2.63 V, a reset delay time of 200 ms, and high accuracy of 2.5%. It supports a wide operating temperature range from -40°C to +125°C with a typical quiescent current of 10 µA.

Supervisors Feature Summary

• Integrates a watchdog timer with manual reset capability for robust system supervision
• Features active low push-pull output for direct interface with digital logic
• Provides precise voltage monitoring with specified threshold accuracy

Supervisors Applications

• Microcontroller system supervision
• Embedded system reset management
• Watchdog timer implementation in industrial controllers

Supervisors Procurement Notes

Verify the specific suffix R7 indicates reel packaging when sourcing. Confirm the threshold voltage variant matches the design requirement of 2.63 V. Ensure the SOT-23-5 footprint aligns with the PCB layout. Check RoHS compliance status for environmental regulations. Validate the operating temperature range suitability for the intended application environment.

Supervisors Selection Notes

Select this component when a combined voltage supervisor and watchdog timer is required in a minimal footprint. The 2.63 V threshold suits applications powered by 3.3 V or similar rails. Consider the 200 ms reset delay for stable power-up sequences. The low quiescent current makes it suitable for battery-operated devices where power efficiency is critical alongside system reliability.

Supervisors Part Context

This part belongs to the ADM823 series of supervisory circuits from Analog Devices. These devices are engineered for reliable system protection in portable and industrial electronics. The series offers various threshold voltages and packages to accommodate different design constraints while maintaining consistent performance standards for voltage monitoring and reset generation.

Supervisors Replacement Considerations

Check for ADM823 variants with different threshold voltages if the 2.63 V level is not suitable. Verify pin compatibility with other SOT-23-5 supervisors. Ensure equivalent watchdog timeout specifications if timing requirements differ. Confirm package dimensions match existing board space constraints.