MAX7424CUA+

Overview

The MAX7424CUA+ is a fifth-order, low-pass switched-capacitor filter (SCF) from the Analog Devices/MAXIM 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 via an external clock or internal oscillator using a 100:1 ratio. It includes an offset adjust pin for DC level control and is housed in an 8-pin μMAX package.

Feature Summary

• Butterworth filter response providing a maximally flat passband
• Clock-tunable corner frequency ranging from 1Hz to 45kHz
• Low-power operation with a dedicated shutdown mode
• Integrated offset adjustment capability

Applications

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

Procurement Notes

Verify the component matches the exact part number MAX7424CUA+. Confirm the suffix indicates standard commercial temperature range and RoHS compliance. Ensure the supplier provides official documentation from Analog Devices or Maxim Integrated to validate authenticity and specifications.

Selection Notes

Select this component when a maximally flat passband is required for instrumentation applications. It is suitable for systems requiring low-power consumption and precise DC output level adjustment. Verify that the system can provide a stable clock signal or appropriate timing capacitor for the desired cutoff frequency.

Part Context

This component belongs to the MAX7418–MAX7425 family of fifth-order, low-pass switched-capacitor filters. The MAX7424 specifically offers a Butterworth response, distinguishing it from elliptic and Bessel variants within the same series. All devices share similar power requirements and packaging options.

Replacement Considerations

Other members of the MAX7418–MAX7425 series may serve as alternatives if different filter responses are acceptable. For example, MAX7420 or MAX7423 offer similar performance characteristics with varying frequency responses.