MAX7424CUA+T

Overview

The MAX7424CUA+T is a fifth-order, low-pass switched-capacitor filter (SCF) from the MAX7418–MAX7425 series. It provides a Butterworth response with a maximally flat passband and operates on a single +3V supply. The device draws 3mA in operating mode and features a shutdown current of 0.2μA. Corner frequencies are adjustable from 1Hz to 45kHz using a 100:1 clock-to-corner ratio. It includes an offset adjust pin for DC level control and supports both internal oscillator and external clocking options.

Feature Summary

• Butterworth filter response providing a maximally flat passband
• Adjustable corner frequency via internal or external clock signals
• Low-power operation with dedicated shutdown mode
• Single-supply compatibility with offset adjustment capability

Applications

• ADC anti-aliasing
• DAC postfiltering
• CT2 base stations
• Speech processing

Procurement Notes

Verify the component authenticity by checking the manufacturer markings against official documentation. Confirm the package type matches the required footprint. Ensure the temperature range meets the operational requirements. Cross-reference the ordering suffix to confirm RoHS compliance status as indicated in the datasheet.

Selection Notes

Select this part when a maximally flat passband is required for instrumentation applications. Choose the CUA suffix for commercial temperature ranges. Verify that the system can provide a stable clock signal within the specified voltage levels. Ensure the power supply constraints align with the single +3V requirement.

Part Context

This component belongs to the MAX7418–MAX7425 family of fifth-order, low-pass switched-capacitor filters. The series offers various responses including elliptic, Bessel, and Butterworth. The MAX7424 specifically delivers a Butterworth characteristic optimized for minimal deviation from DC gain throughout the passband.

Replacement Considerations

The MAX7420 serves as a direct functional substitute within the same series, offering identical Butterworth characteristics but designed for a +5V supply instead of +3V.