MAX281ACWE+

Overview

The MAX281ACWE+ is a fifth-order zero-error Bessel low-pass switch-capacitor filter manufactured by Analog Devices Inc. under the Maxim Integrated brand. It operates with a single +5V supply and features an internal clock generator, eliminating the need for external timing components. The device provides a -3dB cutoff frequency of 20kHz and offers high linearity with minimal distortion. Packaged in a 16-pin SOIC-Wide surface-mount case, it supports industrial temperature ranges and integrates all necessary analog functions for signal conditioning applications.

Feature Summary

• Fifth-order Bessel response for linear phase characteristics
• Integrated clock generator removes external timing requirements
• Zero-error architecture ensures accurate signal processing
• Single +5V power supply operation

Applications

• Signal conditioning in data acquisition systems
• Anti-aliasing filters for analog-to-digital converters
• Audio processing circuits requiring linear phase response
• Instrumentation front-end filtering

Procurement Notes

Verify component authenticity through authorized distributors or direct manufacturer channels. Confirm RoHS compliance status and lot traceability upon receipt. Check for end-of-life notifications as older Maxim products may have limited availability. Ensure storage conditions meet semiconductor handling standards to prevent moisture sensitivity damage before reflow soldering.

Selection Notes

Select this component when a Bessel filter response is required for time-domain fidelity. Verify that the 20kHz cutoff frequency matches the application bandwidth needs. Confirm compatibility with single-supply +5V systems. Consider package constraints regarding the 16-pin SOIC-Wide footprint during PCB layout design. Evaluate thermal dissipation requirements based on expected operating temperatures within the specified range.

Part Context

The MAX281 series belongs to Maxim Integrated's family of switch-capacitor filters. These devices combine analog filtering capabilities with digital control interfaces. The ACWE+ suffix indicates an automotive-grade or enhanced commercial variant in a wide SOIC package with lead-free composition. This part represents a specialized solution for precision filtering where traditional RC networks would require excessive component count.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. Users should consult official Analog Devices cross-reference tools for potential alternatives. Verify pinout compatibility and electrical specifications before considering any third-party replacements.