ADM693AARN

Supervisors Overview

The ADM693AARN is a microprocessor supervisory circuit manufactured by Analog Devices Inc., designed for reliable system monitoring in CMOS applications. It operates within a supply voltage range of 4.5 V to 5.5 V, featuring a precise threshold voltage of 4.4 V and an overvoltage detection limit of 4.5 V. The device incorporates a watchdog timer with a reset delay time of 280 ms and supports battery backup switching. It draws a typical operating current of 100 uA and functions across a temperature range of -40°C to +85°C. Packaged in a 16-pin SOIC format, it provides open drain and push-pull outputs without manual reset capability.

Supervisors Feature Summary

• Integrates a watchdog timer for automated system recovery from software faults
• Provides dual output drive configurations including open drain and push-pull modes
• Supports battery backup switching to maintain data integrity during power transitions
• Features chip enable signal control for flexible power management integration

Supervisors Applications

• Microprocessor voltage supervision in industrial control systems
• Power failure detection in embedded computing hardware
• Watchdog timer implementation in safety-critical electronic devices
• Battery backup switching circuits in portable instrumentation

Supervisors Procurement Notes

Verify the specific suffix 'ARN' against official Analog Devices documentation to confirm package type and tape/reel specifications. Confirm RoHS compliance status and lead times directly with authorized distributors, as availability may vary. Ensure the selected variant matches the required thermal and electrical ratings for the target application environment before finalizing procurement orders.

Supervisors Selection Notes

Select this component when a single-input voltage supervisor with integrated watchdog functionality is required for 5V CMOS systems. Consider the 4.4 V threshold and 280 ms reset delay for timing-sensitive designs. Evaluate the need for chip enable control and battery backup features. Compare against other ADM693 variants if different packaging or output configurations are preferred for space-constrained PCB layouts.

Supervisors Part Context

The ADM693A belongs to the ADM693 series of supervisory circuits from Analog Devices, focusing on microprocessor protection. This specific part number represents a version optimized for surface-mount assembly in SOIC-16 packages. It complements other models like the ADM693AARWZ by offering distinct packaging options while maintaining core supervisory performance characteristics for standard 5V logic applications.

Supervisors Replacement Considerations

Direct substitutes include the ADM693AARWZ for reel-packaged equivalents. Cross-reference with MAX693AEPE+ for pin-compatible alternatives from Maxim Integrated. Verify functional equivalence regarding threshold voltages and watchdog timing before substitution.