ADM1818-20ARTZ-RL7

Supervisors Overview

The ADM1818-20ARTZ-RL7 is a microprocessor reset circuit manufactured by Analog Devices Inc. It functions as a voltage supervisor with an open-drain or open-collector reset output, designed to monitor power supply voltages within the 1.1V to 5V range. The device features a factory-set reset threshold of 2.55V (typical) and provides a minimum reset timeout delay of 100ms. Packaged in a surface-mount SOT-23-3 case, it operates across a temperature range of -40°C to +105°C. This component is classified as simple reset/power-on-reset ICs intended for reliable system supervision.

Supervisors Feature Summary

• Provides robust power-system supervision for safety-critical applications
• Utilizes a factory-set reset threshold to monitor specified voltage ranges
• Features open-drain or open-collector reset output configuration

Supervisors Applications

• Safety-critical automotive applications
• Microprocessor reset circuits
• Power supply monitoring systems

Supervisors Procurement Notes

Verify current availability status as this part may be subject to discontinuation notices. Confirm that the specific 2.55V threshold aligns with your design requirements, as other variants exist within the ADM1818 family. Ensure compatibility with the SOT-23-3 package dimensions during PCB layout. Cross-reference official manufacturer documentation for any recent updates regarding end-of-life notifications or recommended alternative components.

Supervisors Selection Notes

Select this component when a fixed 2.55V threshold is required for monitoring low-voltage rails. Consider the SOT-23-3 package size constraints and the open-drain output capability for interfacing with various logic levels. Evaluate the 100ms minimum reset timeout against system startup requirements. Compare against other ADM1818 variants if different threshold voltages such as 2.31V or 2.88V are needed instead.

Supervisors Part Context

This device belongs to the ADM1818 series of microprocessor reset circuits from Analog Devices. The series offers reliable, low-cost voltage monitoring solutions with various factory-set thresholds including 2.18V, 2.31V, 2.55V, 2.88V, 3.06V, 4.35V, and 4.62V. These supervisors are designed for simplicity and accuracy in protecting systems from under-voltage conditions.

Supervisors Replacement Considerations

The ADM1818-R23AKSZ-R7 is listed as a parameter equivalent substitute. Verify that the 2.31V threshold of the substitute matches application needs, as it differs from the 2.55V threshold of the original part.