ADM8699ARWZ

Supervisors Overview

The ADM8699ARWZ is a voltage supervisory circuit manufactured by Analog Devices Inc., designed to monitor system power integrity. It operates within a supply voltage range of 2.0 V to 5.5 V and features a fixed threshold voltage of 4.63 V for accurate detection of under-voltage conditions. The device provides both active high and active low reset outputs with a standard reset delay time of 140 ms, ensuring stable signal generation during power transitions. It incorporates a built-in watchdog timer with a timeout period of 1.4 seconds to detect software failures and restore system control. The component supports battery backup switching functionality and maintains an operating temperature range from -40°C to +85°C. Packaged in a 16-lead SOIC surface-mount format, it draws a typical supply current of 200 µA.

Supervisors Feature Summary

• Integrated watchdog timer with automatic reset capability for fault recovery
• Dual output configuration providing active high and active low signals
• Battery backup switch function for seamless power source transition
• Fixed threshold voltage monitoring for precise power supervision

Supervisors Applications

• Microprocessor power supply monitoring
• Embedded system reset management
• Battery-powered device power supervision
• Industrial control system protection

Supervisors Procurement Notes

Verify the specific suffix 'ARWZ' against official Analog Devices documentation to confirm package type and temperature grade. Confirm end-of-life status as some sources indicate discontinuation. Ensure compatibility with existing PCB footprint and thermal requirements before procurement.

Supervisors Selection Notes

Select this component when dual-polarity reset outputs are required alongside watchdog functionality. Verify that the 4.63 V threshold aligns with the target system voltage rails. Consider the 140 ms reset delay for system startup timing constraints. Evaluate the 200 µA quiescent current impact on overall power budget.

Supervisors Part Context

Part of the ADM869x series of improved supervisory circuits, offering enhanced performance over earlier generations like the ADM69x. Designed for reliable operation in demanding environments with integrated fault detection capabilities.

Supervisors Replacement Considerations

Public confirmed substitute part numbers include ADM709LARZ, ADM8698ARN, MAX705ESA+, and MAX709LESA+.