MAX280EWE

Overview

The MAX280EWE is a fifth-order zero-error Butterworth active filter integrated circuit manufactured by Analog Devices Inc./Maxim Integrated. It utilizes a switched-capacitor architecture to provide low-pass filtering characteristics within a compact 16-SOIC package. The device operates with a single supply voltage ranging from 3V to 5.5V and supports clock frequencies up to 500kHz. Key electrical parameters include a cutoff frequency of 20kHz, an input impedance of 10kΩ, and a dynamic range of 90dB. It functions as a standalone analog signal processing component designed for precision applications requiring stable frequency response without external tuning.

Feature Summary

• Fifth-order Butterworth response provides steep roll-off characteristics for effective noise rejection
• Switched-capacitor design eliminates the need for external resistors and capacitors
• Zero-error architecture ensures accurate frequency response without manual calibration
• Single-supply operation simplifies power integration in portable systems

Applications

• Precision sensor signal conditioning
• Data acquisition system anti-aliasing filters
• Audio processing circuits requiring specific frequency shaping

Procurement Notes

Verify the exact ordering suffix when sourcing components, as variations such as MAX280EWE+T or MAX280EWE-T may exist in distributor catalogs. Confirm that the received part matches the specified package type and manufacturer documentation. Cross-reference datasheets to ensure compatibility with existing design requirements before procurement.

Selection Notes

Select this component when a fixed 20kHz cutoff frequency and fifth-order attenuation are required. Ensure the application environment supports the necessary clock signal generation for the switched-capacitor core. Verify that the 10kΩ input impedance aligns with the source circuit capabilities to prevent loading effects.

Part Context

This component belongs to the MAX280 family of active filters produced by Maxim Integrated, now part of Analog Devices. These devices are engineered for applications demanding high-performance analog filtering in small form factors. The EWE suffix denotes the specific 16-pin SOIC surface-mount package configuration used for this variant.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided reference data. Designers should consult official manufacturer resources for current equivalent recommendations or pin-compatible alternatives.