MAX274ACWI+

Overview

The MAX274ACWI+ is a fourth-order continuous-time active filter manufactured by Analog Devices Inc./Maxim Integrated. It operates on a single +5V supply and features an external clock input ranging from 50kHz to 1MHz, which sets the filter cutoff frequency at one-hundredth of the clock rate. The device provides low-pass or band-pass responses with a maximum cutoff frequency of 10kHz. It utilizes a SOIC-28 package and supports industrial temperature operation.

Feature Summary

• Continuous-time architecture eliminates switched-capacitor clock feedthrough
• Single-supply operation simplifies power requirements
• External clock pin allows flexible frequency tuning

Applications

• Instrumentation signal conditioning
• Data acquisition front-end filtering
• Audio processing circuits

Procurement Notes

Verify component authenticity through authorized distributors. Confirm datasheet revision matches the specific manufacturing lot. Check for RoHS compliance status as indicated in official documentation. Ensure storage conditions align with manufacturer guidelines to maintain performance integrity.

Selection Notes

Select this component when continuous-time filtering is required without switched-capacitor artifacts. Compare against the MAX275 if higher cutoff frequencies are needed. Verify that the external clock source meets the specified frequency range for accurate filter response.

Part Context

This part belongs to the MAX274/MAX275 family of continuous-time active filters. It serves as a direct alternative to switched-capacitor designs where clock noise sensitivity is a concern. The MAX275 variant offers extended frequency capabilities compared to the MAX274.

Replacement Considerations

MAX275BCWI+