MAX7420CUA+T

Overview

The MAX7420CUA+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. The device operates on a single +5V supply and draws 3mA in operating mode, reducing to 0.2μA in shutdown. Corner frequencies range from 1Hz to 45kHz via a 100:1 clock-to-corner ratio. It features 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
• Clock-tunable corner frequency ranging from 1Hz to 45kHz
• Low-power operation with 3mA active current and 0.2μA shutdown current
• Single-supply operation at +5V with offset adjustment capability

Applications

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

Procurement Notes

Verify the specific suffix 'T' against official documentation to confirm tape-and-reel packaging status. Ensure the component matches the Analog Devices or Maxim Integrated manufacturing source. Confirm RoHS compliance and temperature grade specifications before procurement.

Selection Notes

Select this part for applications requiring a maximally flat passband response. Use when operating from a single +5V supply is required. Consider alternative models within the series if Bessel or Elliptic responses are needed instead of Butterworth characteristics.

Part Context

This component belongs to the MAX7418–MAX7425 family of fifth-order, low-pass switched-capacitor filters. These devices share common architectural features including low power consumption and flexible clocking options, differing primarily in their filter response types and operating voltage requirements.

Replacement Considerations

Direct replacements include other members of the MAX7418–MAX7425 series such as MAX7424CUA+T for +3V operation. Verify that the substitute maintains the required Butterworth response and compatible supply voltage constraints.