ADM697ARZ

Supervisors Overview

The ADM697ARZ is a CMOS supervisory circuit manufactured by Analog Devices Inc., designed for monitoring single voltage rails in electronic systems. It operates within a supply voltage range of 3V to 5.5V and features an adjustable overvoltage threshold. The device integrates a watchdog timer with a fixed timeout period of 70ms and provides both active-high and active-low push-pull outputs. It supports chip enable functionality and includes power-fail detection capabilities. The component is housed in a 16-SOIC package and functions reliably across an industrial temperature range from -40°C to +85°C, consuming a typical operating current of 300µA.

Supervisors Feature Summary

• Integrates a watchdog timer with a fixed 70ms timeout interval for system reliability
• Provides dual output polarity options including active-high and active-low signals
• Features adjustable overvoltage threshold detection for flexible power monitoring
• Supports low-power operation with chip enable control functionality

Supervisors Applications

• Microprocessor (MPU) supervisor circuits
• Single-channel voltage monitoring systems
• Industrial control board power supervision
• Embedded system reset generation

Supervisors Procurement Notes

Verify the specific suffix ARZ confirms the SOIC-16 surface-mount package variant before ordering. Confirm that the adjustable overvoltage threshold meets the specific design requirements as it is not factory-fixed. Ensure the 70ms watchdog timeout aligns with the target microcontroller's timing specifications. Check for any recent product change notices regarding the ADM696/697 series packaging or pinout consistency.

Supervisors Selection Notes

Select this component when a single-supply supervisor with integrated watchdog functionality is required. The adjustable overvoltage threshold allows customization for non-standard rail voltages. Compare against fixed-threshold alternatives if programmability is unnecessary. Consider the 300µA quiescent current for battery-sensitive designs. Verify that the 16-SOIC footprint fits the available PCB space compared to smaller packages.

Supervisors Part Context

The ADM697ARZ belongs to the ADM69x family of supervisory circuits from Analog Devices. This series focuses on providing robust power management protection for digital logic and microprocessors. It shares functional similarities with the MAX697 but adheres to Analog Devices manufacturing standards. The part serves as a critical interface between power rails and sensitive logic components to prevent erratic behavior during brown-out conditions.

Supervisors Replacement Considerations

The MAX697EWE+ is documented as a direct replacement option. Verify pin compatibility and electrical parameter alignment before substitution. Ensure the alternative package type matches the existing board layout constraints.