ADM825TYRJZ-R7

Supervisors Overview

The ADM825TYRJZ-R7 is a voltage supervisory circuit manufactured by Analog Devices Inc., designed to monitor system power integrity. It operates within a supply voltage range up to 5.5 V and features a threshold voltage of 3.08 V with an accuracy of 2.5%. The device provides a push-pull output and includes manual reset functionality, though it lacks a watchdog timer or battery backup switch. It draws a typical operating current of 24 uA and offers a reset delay time of 280 ms. The component supports overvoltage detection at 3.11 V and functions reliably across an extended temperature range from -40 C to +125 C.

Supervisors Feature Summary

• Integrates manual reset capability for user-initiated system recovery
• Provides active low push-pull output for direct logic interfacing
• Supports overvoltage detection alongside standard under-voltage supervision

Supervisors Applications

• Embedded systems requiring reliable power monitoring
• Microcontroller-based designs needing manual reset control
• Industrial equipment operating in extreme temperatures

Supervisors Procurement Notes

Verify the specific suffix R7 indicates reel packaging when sourcing. Confirm the TYRJZ designation matches the required SOT-23-5 package and 3.08 V threshold. Ensure compatibility with the target board's thermal management for the -40 C to +125 C operating range. Cross-reference the manufacturer part number against official Analog Devices documentation to avoid counterfeit components.

Supervisors Selection Notes

Select this component when a supervisory circuit with manual reset is required without watchdog complexity. The 24 uA quiescent current suits low-power applications. Verify that the 280 ms reset delay meets the system startup timing requirements. Ensure the 3.08 V threshold aligns with the monitored rail voltage specifications.

Supervisors Part Context

This part belongs to the ADM825 series of voltage supervisors from Analog Devices. It is distinct from variants like the ADM6823 which include integrated watchdog timers. The device focuses on basic supervision and manual reset functions within a compact surface-mount package suitable for space-constrained PCB layouts.

Supervisors Replacement Considerations

Check for ADM825 variants with different thresholds or packages. Verify if the absence of a watchdog timer in the replacement matches system needs.