ADM693AARNZ

Supervisors Overview

The ADM693AARNZ is a voltage supervisory circuit manufactured by Analog Devices Inc., designed for monitoring single-input power rails. It operates within a supply voltage range of 4.5 V to 5.5 V, with specific under-voltage and over-voltage thresholds set at 4.25 V and 4.48 V respectively, centered around a nominal 4.4 V threshold. The device features an open-drain output type and includes a built-in watchdog timer and battery backup switch functionality. It provides a reset delay time of 200 ms and supports chip enable signals without manual reset capability. The component is housed in a SOIC-16 package and is rated for operation between -40°C and +85°C, consuming 1.95 mA of working power current with a maximum power dissipation of 600 mW.

Supervisors Feature Summary

• Integrates a watchdog timer and battery backup switch for comprehensive system supervision
• Provides power failure detection capabilities alongside voltage monitoring
• Supports chip enable signaling for controlled operational states

Supervisors Applications

• Microprocessor power supply monitoring
• Battery backup system supervision
• Watchdog timer implementation in embedded systems

Supervisors Procurement Notes

Verify the exact suffix against official Analog Devices documentation to confirm pinout and electrical specifications, as variations exist within the ADM693 family. Confirm availability status through authorized distributors, as some variants may have limited stock or restricted distribution regions. Ensure the selected package matches the PCB footprint requirements.

Supervisors Selection Notes

Select this component when a single-channel supervisor with integrated watchdog and backup switching is required for 5V CMOS systems. Consider the open-drain output configuration for compatibility with logic levels. Evaluate the 200 ms reset delay against system startup timing requirements. Verify that the operating temperature range meets environmental conditions.

Supervisors Part Context

The ADM693AARNZ belongs to the ADM693A series of voltage supervisors from Analog Devices. This series is engineered for reliable monitoring of microprocessor and memory systems. The AARNZ designation typically indicates a specific package variant within the broader ADM693 product line, focusing on surface-mount integration for compact designs.

Supervisors Replacement Considerations

Public confirmed substitute part numbers are not available in the provided source material.