ADM812RART-REEL7

Supervisors Overview

The ADM812RART-REEL7 is a single-channel voltage supervisory circuit manufactured by Analog Devices Inc. It monitors one input voltage and provides a reset signal when the supply drops below a specific threshold. The device features a push-pull/totem pole output configuration with an active-high reset polarity. Key electrical parameters include a reset threshold voltage of 2.63V, a minimum reset timeout of 140ms, and a maximum operating voltage of 5.5V. It operates within a temperature range of -40°C to +85°C and consumes a typical quiescent current of 15µA.

Supervisors Feature Summary

• Monitors a single power supply rail for under-voltage conditions
• Provides a manual reset input capability for system control
• Features active-high reset output with push-pull drive
• Includes built-in power-on reset timer

Supervisors Applications

• Microprocessor and microcontroller power supply monitoring
• Battery-powered systems requiring low standby current
• Embedded systems needing reliable brown-out protection
• Industrial control units operating in wide temperature ranges

Supervisors Procurement Notes

Verify component authenticity through authorized distributors or direct manufacturer channels. Confirm package integrity and lead condition upon receipt. Check datasheet revisions for any updates to electrical characteristics or pinout configurations. Ensure storage conditions comply with moisture sensitivity level requirements before soldering. Validate that the specific suffix matches the required threshold voltage and output type for your design.

Supervisors Selection Notes

Select this component when a single-channel supervision with active-high output is required. Compare threshold accuracy and quiescent current against alternative supervisors if ultra-low power is critical. Consider the SOT-143-4 package size constraints relative to PCB layout. Verify that the 140ms reset delay meets the target processor's startup timing requirements. Evaluate thermal performance within the specified operating temperature range.

Supervisors Part Context

This part belongs to the ADM81x series of supervisory circuits designed for simple reset and power-on reset applications. It complements other variants in the family that offer different threshold voltages or output polarities. The series is intended for cost-sensitive applications requiring basic voltage monitoring without complex watchdog or multi-rail capabilities.

Supervisors Replacement Considerations

The ADM812RARTZ-REEL7 is listed as a direct substitute. Verify pin compatibility and electrical parameter alignment before replacement. Note that the original part may be obsolete; confirm availability and lead times for the Z-suffix variant.