ADM1818-20ART-REEL

Supervisors Overview

The ADM1818-20ART-REEL is a voltage supervisor integrated circuit manufactured by Analog Devices Inc. It operates within a supply voltage range of 1.7 V to 5.5 V and features a fixed output threshold of 2.0 V. The device provides a push-pull active-low reset signal with a typical reset delay time of 200 ms. It is housed in a SOT-23-3 surface-mount package and supports an operating temperature range from -40°C to +85°C. The component draws a maximum supply current of 10 µA, ensuring low power consumption during operation.

Supervisors Feature Summary

• Generates a system reset signal when the supply voltage drops below a specified threshold
• Includes a manual reset input pin for user-initiated system resets
• Features a watchdog timer input to monitor software execution integrity
• Provides a push-pull output stage capable of driving external loads directly

Supervisors Applications

• Microcontroller and microprocessor power management systems
• Battery-powered portable electronic devices requiring low quiescent current
• Industrial control systems needing reliable voltage supervision
• Embedded applications with watchdog timer requirements

Supervisors Procurement Notes

Verify the specific suffix ART indicates the reel packaging configuration and temperature grade. Confirm the 20V designation corresponds to the 2.0 V threshold variant. Check for RoHS compliance status and lead-free specifications against the latest manufacturer datasheet. Ensure compatibility with existing PCB footprint and soldering profiles for SOT-23-3 packages.

Supervisors Selection Notes

Select this component when a fixed 2.0 V supervision threshold is required for low-voltage digital circuits. Consider the low 10 µA supply current for battery-sensitive designs. Evaluate the need for manual reset and watchdog functionality before choosing over simpler supervisor variants. Verify that the SOT-23-3 package size fits the mechanical constraints of the target application.

Supervisors Part Context

This part belongs to the ADM1818 series of voltage supervisors from Analog Devices. The series offers various threshold voltages and package options to suit different system requirements. The ADM1818 family is designed for reliable operation in embedded systems, providing essential protection against brown-out conditions and software faults through integrated reset and watchdog features.

Supervisors Replacement Considerations

Cross-reference with other ADM1818 variants offering different threshold voltages if the 2.0 V level is unsuitable. Check for equivalent parts from other manufacturers with similar push-pull outputs and watchdog capabilities. Ensure any substitute matches the SOT-23-3 package dimensions and electrical characteristics closely.