ADM8691ARNZ

Supervisors Overview

The ADM8691ARNZ is a microprocessor supervisory circuit manufactured by Analog Devices Inc. It operates within a supply voltage range of 4.75 V to 5.5 V and monitors a single input up to 5 V. The device features a fixed reset threshold voltage of 4.65 V and provides an active-high open-drain output. It includes a programmable watchdog timer with a timeout period of 200 ms and supports manual reset functionality. The component is available in a 16-lead SOIC surface-mount package and is rated for operation between -40 °C and +85 °C.

Supervisors Feature Summary

• Integrated watchdog timer with programmable timeout
• Manual reset capability for system control
• Active-high open-drain supervisor output
• Fixed 4.65 V reset threshold voltage

Supervisors Applications

• Microprocessor power supply monitoring
• Embedded system reset circuits
• Industrial control unit supervision
• Communication equipment power management

Supervisors Procurement Notes

Verify the specific suffix 'ARNZ' against official Analog Devices documentation to confirm pinout, temperature grade, and lead-free status. Ensure compatibility with existing PCB footprints for the 16-lead SOIC package. Confirm that the fixed 4.65 V threshold meets the design requirements for the target 5 V rail. Check for any recent lifecycle notices or obsolescence warnings directly from the manufacturer.

Supervisors Selection Notes

Select this component when a fixed threshold supervisor with integrated watchdog and manual reset is required. It is suitable for applications needing an active-high output signal. Consider alternative models if a different threshold voltage or low-power standby current is necessary. Verify that the 16-lead SOIC package fits the mechanical constraints of the enclosure.

Supervisors Part Context

This part belongs to the ADM8691 series of supervisory circuits designed for reliable system management. It complements other Analog Devices power management solutions by providing essential reset and watchdog functions. The series is commonly used in digital systems requiring robust fault detection and recovery mechanisms without complex external components.

Supervisors Replacement Considerations

Check Analog Devices datasheets for direct pin-to-pin replacements within the ADM8691 family. Verify functional equivalence regarding threshold voltage and output type before substitution.

Supervisors FAQ

What is the reset threshold voltage for the ADM8691ARNZ?

The reset threshold voltage is fixed at 4.65 V.

Does the ADM8691ARNZ include a watchdog timer?

Yes, it includes a programmable watchdog timer with a standard timeout of 200 ms.

What is the output type of the supervisor?

The device provides an active-high open-drain output.