ADM1818-R22AKSZ-R7

Supervisors Overview

The ADM1818-R22AKSZ-R7 is a supervisory circuit manufactured by Analog Devices Inc., designed to monitor voltage levels and generate reset signals for microprocessors and other digital logic. It operates within a supply voltage range of 1.5 V to 5.5 V, featuring a fixed threshold voltage of 2.20 V. The device provides an active-low open-drain output with a typical reset delay time of 140 ms. Packaged in a compact SC-70-3 surface-mount case, it supports operation across an industrial temperature range of -40°C to +125°C.

Supervisors Feature Summary

• Provides reliable system reset generation based on monitored supply voltage levels
• Features an active-low open-drain output compatible with various logic families
• Operates over a wide supply voltage range suitable for single-supply applications
• Available in a small SC-70-3 package for space-constrained designs

Supervisors Applications

• Microprocessor and microcontroller power supply monitoring
• Battery-powered equipment voltage supervision
• Portable instrumentation reset circuits
• Industrial control system power management

Supervisors Procurement Notes

Verify the specific suffix R7 indicates reel packaging when ordering. Confirm the threshold voltage matches the design requirement of 2.20 V. Check current availability status as distribution may vary. Ensure the SC-70-3 package footprint aligns with PCB layout constraints. Validate operating temperature range suitability for the intended environment.

Supervisors Selection Notes

Select this component when a fixed 2.20 V threshold is required for system reset. Consider the open-drain output configuration for interfacing with different logic voltages. Evaluate the 140 ms reset delay against processor startup requirements. Compare power consumption and package size against alternative supervisory ICs. Verify compatibility with the target supply voltage range of 1.5 V to 5.5 V.

Supervisors Part Context

This part belongs to the ADM1818 series of voltage supervisors from Analog Devices. The series offers various threshold voltages and output configurations to suit different application needs. The R22 variant specifically targets applications requiring a 2.20 V reset threshold. The series is known for low power consumption and high accuracy in critical reset timing.

Supervisors Replacement Considerations

ADM1818-R22AKSZ-RL7 is a parameter-equivalent alternative within the same product family.