ADM823SYRJ-R7

Supervisors Overview

The ADM823SYRJ-R7 is a supervisory circuit manufactured by Analog Devices Inc., designed for voltage monitoring and system reset management. It operates within a supply voltage range of up to 5.5 V and features a fixed threshold voltage of 2.93 V with an accuracy of 2.5%. The device incorporates a manual reset input and a watchdog timer function, providing a reset delay time of 200 ms. It supports active low push-pull output and functions across an extended temperature range from -40 °C to +125 °C. The component draws a typical operating supply current of 20 µA and is housed in a compact SOT-23-5 surface-mount package.

Supervisors Feature Summary

• Integrates a watchdog timer with manual reset capability for robust system supervision
• Provides precise voltage monitoring with a fixed 2.93 V threshold and 2.5% accuracy
• Features an active low push-pull output driver for direct logic interface compatibility

Supervisors Applications

• Microprocessor and microcontroller system reset generation
• Watchdog timer implementation in embedded control systems
• Battery-powered devices requiring low standby current consumption

Supervisors Procurement Notes

Verify the specific suffix 'R7' corresponds to the tape-and-reel packaging configuration required for automated assembly processes. Confirm that the 2.93 V threshold aligns with the target supply rail monitoring requirements. Ensure the SOT-23-5 footprint matches the designated PCB layout constraints. Validate RoHS compliance status against current regulatory standards for the intended market.

Supervisors Selection Notes

Select this component when a fixed threshold voltage near 3 V is required for single-supply monitoring applications. The integrated watchdog feature makes it suitable for systems needing automatic recovery from software faults without external timing components. Consider the low 20 µA quiescent current for battery-operated designs where power efficiency is critical. The wide industrial temperature range ensures reliability in harsh environmental conditions.

Supervisors Part Context

This part belongs to the ADM6823/ADM823 family of supervisory circuits from Analog Devices. These devices are engineered to provide reliable power management solutions for digital systems. The family offers various threshold options and package types to accommodate different design constraints while maintaining consistent performance characteristics for voltage supervision and reset generation tasks.

Supervisors Replacement Considerations

Public confirmed substitute part numbers: ADM6823SYRJZ-RL7.