ADM8322WC31ARJZR7

Supervisors Overview

The ADM8322WC31ARJZR7 is a supervisory circuit manufactured by Analog Devices Inc., designed for monitoring voltage levels in electronic systems. It features an active-low open-drain reset output and includes a manual reset input for system control. The device incorporates a built-in watchdog timer to enhance reliability against software failures. It operates within a supply voltage range of 1.63V to 5.5V and offers a fixed reset threshold of 3.10V. Packaged in a compact SOT-23-5 form factor, it supports industrial temperature ranges.

Supervisors Feature Summary

• Integrates a windowed watchdog timer with timeout reset functionality to detect processor malfunctions.
• Provides an active-low open-drain reset output compatible with various logic families.
• Includes a manual reset input allowing external assertion of the reset signal.

Supervisors Applications

• Microprocessor and microcontroller power supply monitoring
• Embedded system reset generation
• Industrial control board supervision

Supervisors Procurement Notes

Verify the suffix ARJZR7 confirms the specific tape-and-reel packaging and temperature grade. Confirm the WC3 designation matches the required 3.10V threshold for your design. Ensure the SOT-23-5 footprint aligns with your PCB layout constraints before finalizing procurement.

Supervisors Selection Notes

Select this component when a fixed 3.10V threshold is required alongside integrated watchdog protection. The open-drain output necessitates an external pull-up resistor; ensure the chosen resistor value suits the target logic voltage. Verify that the manual reset pin functionality meets the system's initialization requirements.

Supervisors Part Context

This part belongs to the ADM8322 series of supervisory circuits from Analog Devices. The series is characterized by low quiescent current and high accuracy reset thresholds. The ADM8322 variant specifically combines voltage monitoring with watchdog capabilities in a small package, distinguishing it from simpler reset controllers without timer functions.

Supervisors Replacement Considerations

Check for ADM8322 variants with different threshold voltages if 3.10V is not suitable. Consider ADM8323 or ADM8324 series members for alternative reset polarities or thresholds. Verify pin compatibility with SOT-23-5 supervisors from other manufacturers if sourcing alternatives.