MAX293EWE+T

Overview

The MAX293EWE+T is an eighth-order, lowpass, elliptic switched-capacitor filter manufactured by Analog Devices Inc. under the Maxim Integrated brand. It operates within a supply voltage range of 4.5V to 10V and supports clock frequencies up to 50kHz. The device features a cutoff frequency determined by an external clock, with a typical center frequency of 25kHz for standard applications. It is housed in a 16-pin SOIC-Wide package and functions as a single-channel active filter suitable for precision signal processing tasks requiring steep roll-off characteristics.

Feature Summary

• Provides high-selectivity elliptic filtering response for effective noise rejection
• Utilizes switched-capacitor architecture allowing precise frequency control via external clock
• Integrates eighth-order performance in a compact surface-mount package

Applications

• Anti-aliasing filters in data acquisition systems
• Signal conditioning for sensor interfaces
• Audio processing circuits requiring specific frequency attenuation

Procurement Notes

Verify component authenticity through authorized distributors or direct manufacturer channels. Confirm RoHS compliance status and check for obsolescence notices, as older Maxim products may have limited availability or discontinuation risks. Ensure packaging specifications match design requirements before ordering.

Selection Notes

Select this component when an eighth-order elliptic response is required without discrete component tolerance variations. Ensure the system provides a stable clock signal within the specified range. Verify that the input signal amplitude remains within the linear operating region of the switched-capacitor circuitry to prevent distortion.

Part Context

This part belongs to the Maxim Integrated family of switched-capacitor filters, designed to replace complex passive LC networks. It offers improved accuracy and smaller footprint compared to traditional analog filter designs. The EWE suffix indicates a wide-body SOIC package suitable for automated assembly processes.

Replacement Considerations

Direct replacements include other variants in the MAX293 series such as MAX293ESA+T for different packaging needs. Cross-reference with MAX294 or MAX295 if higher order filtering or different response types are required. Verify pin compatibility and clock interface requirements before substitution.