ADM802MAN

Supervisors Overview

The ADM802MAN is a microprocessor supervisory circuit manufactured by Analog Devices Inc., designed to monitor supply voltages and manage system resets. It features a precision voltage monitor with a fixed threshold of 4.65 V, ensuring accurate detection of power anomalies. The device includes a watchdog timer for fault recovery and a backup battery switchover mechanism to maintain data integrity during main power loss. It provides an active-low reset output capable of sourcing 250 mA, suitable for driving various logic families. Operating within a temperature range of -40°C to +85°C, it is housed in an 8-pin SOIC package.

Supervisors Feature Summary

• Precision supply voltage monitoring with a fixed 4.65 V threshold
• Integrated watchdog timer for automated system recovery from software faults
• Backup battery switchover functionality to preserve critical data during power transitions
• Active-low reset output with high drive capability

Supervisors Applications

• Microprocessor system supervision in industrial control units
• Data retention management in embedded storage systems
• Fault protection circuits in automotive electronic modules
• Power management in telecommunications infrastructure equipment

Supervisors Procurement Notes

Verify the specific suffix 'MAN' against official Analog Devices documentation to confirm pinout compatibility and thermal specifications. Ensure the component meets RoHS directives if required by your manufacturing standards. Cross-reference the datasheet revision history to validate feature availability, particularly regarding the watchdog timeout period and reset assertion levels. Confirm that the 8-pin SOIC package dimensions align with your PCB footprint requirements before finalizing procurement.

Supervisors Selection Notes

Select this component when a fixed 4.65 V threshold is appropriate for the target supply rail. The integrated watchdog and battery switchover simplify design complexity compared to discrete solutions. Consider the 250 mA output current capability for direct interface with reset inputs without additional buffering. Evaluate the operating temperature range to ensure suitability for the intended environmental conditions. Verify that the active-low reset polarity matches the receiving microcontroller or FPGA requirements.

Supervisors Part Context

The ADM802MAN belongs to the ADM802/ADM805 series of microprocessor supervisors from Analog Devices. These devices are engineered to provide reliable reset signals and system protection in digital electronics. The series typically includes variants with different thresholds and features, such as adjustable timeouts or manual reset inputs. The ADM802 variant specifically emphasizes robust monitoring with built-in watchdog capabilities, making it a standard choice for maintaining system stability in complex digital designs.

Supervisors Replacement Considerations

Check for ADM802MANZ or other suffix variations from Analog Devices for potential lead-free or updated packaging options. Verify functional equivalence with ADM802L or ADM802M if different package styles are required, ensuring threshold voltages and output characteristics remain compatible. Consult official substitution guides to confirm pin-to-pin compatibility and electrical parameter alignment.