ADM811MART-REEL7

Supervisors Overview

The ADM811MART-REEL7 is a voltage supervisory circuit manufactured by Analog Devices Inc., designed for monitoring single input voltages. It features an active low push-pull output and manual reset capability without a watchdog timer or battery backup switch. The device operates within a supply voltage range up to 5.5 V, with a threshold voltage of 4.38 V and an overvoltage threshold of 4.46 V. Key electrical parameters include a reset delay time of 560 ms, quiescent current of 15 uA, and accuracy of 1.5%. It is housed in an SOT-143-4 package and supports surface mount installation across a temperature range of -40°C to +85°C.

Supervisors Feature Summary

• Provides precise voltage supervision with manual reset functionality for system control
• Features low power consumption suitable for battery-operated applications
• Includes debounced manual reset input to prevent false triggering

Supervisors Applications

• Monitoring 5V power supply rails in embedded systems
• Microprocessor reset generation in industrial control units
• Voltage supervision in portable electronic devices

Supervisors Procurement Notes

Verify the specific suffix 'MART' against official Analog Devices documentation to confirm the exact threshold voltage variant (4.38V) and packaging details. Ensure compatibility with the required operating temperature range and output configuration before integration. Cross-reference the manufacturer part number with authorized distributors to confirm availability status and authenticity, as distribution channels may vary.

Supervisors Selection Notes

Select this component when a fixed 4.38V threshold is required for 5V system monitoring. Consider the 15uA quiescent current for power-sensitive designs. Verify that the active low output polarity matches the target microcontroller's reset input requirements. Confirm that the SOT-143-4 footprint fits the PCB layout constraints.

Supervisors Part Context

Part of the ADM811 series of voltage supervisors from Analog Devices, offering reliable performance across industrial temperature ranges. This series is designed to replace older generations like the MAX811, providing improved accuracy and lower power consumption while maintaining standard interface compatibility for legacy system upgrades.

Supervisors Replacement Considerations

Direct substitutes include ADM811SARTZ-REEL7 and ADM811TARTZ-REEL7, provided their respective threshold voltages match the design requirements. Verify pinout compatibility and output drive strength differences between variants before substitution.