ADM1817-20ART-RL7

Supervisors Overview

The ADM1817-20ART-RL7 is a voltage supervisory circuit manufactured by Analog Devices Inc., designed to monitor power supply voltages and generate a reset signal. It operates within a supply voltage range up to 5.5 V and features a push-pull output type. The device provides a fixed reset threshold of 4.62 V, corresponding to the '20' suffix in its part number. It includes a minimum reset timeout of 100 ms to ensure stable power-up conditions. The component is housed in a SOT-23-3 surface-mount package and supports operation across an industrial temperature range from -40°C to +105°C.

Supervisors Feature Summary

• Provides reliable voltage monitoring with a fixed reset threshold for standard power rails
• Features a push-pull output stage for direct interface with microprocessor reset pins
• Includes a guaranteed minimum reset timeout to prevent premature system activation during power-up

Supervisors Applications

• Microprocessor reset generation in embedded systems
• Monitoring 5 V power supply rails in industrial equipment
• Voltage supervision in battery-operated devices requiring low quiescent current

Supervisors Procurement Notes

Verify component authenticity through authorized distributors or manufacturer channels due to potential counterfeit risks. Confirm that the specific suffix matches required electrical parameters, as variations exist within the family. Check for end-of-life status or obsolescence notices, as this series may be discontinued. Ensure packaging format aligns with assembly requirements. Validate RoHS compliance documentation if environmental regulations apply to the final product.

Supervisors Selection Notes

Select this component when a fixed 4.62 V threshold is appropriate for the target power rail. Consider the SOT-23-3 package size constraints and thermal performance within the -40°C to +105°C range. Evaluate if the 100 ms minimum timeout meets system power-up sequencing requirements. Compare against other ADM1817 variants if different thresholds or manual reset capabilities are needed. Ensure compatibility with the microprocessor's active-high reset input logic.

Supervisors Part Context

The ADM1817 series consists of low-cost, low-power voltage supervisors designed for microprocessor applications. The ADM1817-20ART-RL7 specifically targets 5 V systems with a 4.62 V threshold. It belongs to Analog Devices' portfolio of simple reset generators without watchdog timers or manual reset inputs. The series is known for high accuracy and low standby current, making it suitable for portable and industrial electronics where space and power efficiency are critical.

Supervisors Replacement Considerations

Direct substitutes include other ADM1817 variants with matching thresholds, such as ADM1817-30ARTZ-RL7 for 3.08 V or ADM1817-5ARTZ-RL7 for 4.62 V (verify exact threshold match). Cross-reference with ADM810 series for similar functionality but different pinouts or specifications. Always verify electrical parameters and package compatibility before substitution.