MAX7414EUA

Overview

The MAX7414EUA is a fifth-order, lowpass switched-capacitor filter from the MAX7409/MAX7410/MAX7413/MAX7414 family. It operates from a single +3V supply and features a Butterworth response for a maximally flat passband. The corner frequency is clock-tunable from 1Hz to 15kHz using either an external capacitor or an external clock signal with a fixed 100:1 ratio. Supply current is 1.2mA in operating mode and reduces to 0.2µA in shutdown mode. The device includes an offset adjust pin and is housed in an 8-pin µMAX package.

Feature Summary

• Butterworth filter response providing a maximally flat passband
• Clock-tunable corner frequency adjustable from 1Hz to 15kHz
• Low-power operation with dedicated shutdown mode
• Single-supply operation optimized for +3V applications

Applications

• ADC anti-aliasing
• DAC postfiltering
• Speech processing
• Air-bag electronics

Procurement Notes

Verify the specific suffix 'EUA' corresponds to the -40°C to +85°C temperature range and the 8-pin µMAX package configuration. Confirm that the component is sourced from Analog Devices Inc./Maxim Integrated as the authorized manufacturer. Ensure the datasheet revision matches the required specifications before procurement.

Selection Notes

Select the MAX7414EUA when a Butterworth response is required for a +3V system. Choose this part over the MAX7413 series if a maximally flat passband is preferred over the Bessel response. Ensure the design accommodates the 100:1 clock-to-corner frequency ratio and provides appropriate bypass capacitors for the COM and VDD pins.

Part Context

The MAX7414EUA belongs to the MAX74xx family of fifth-order lowpass switched-capacitor filters. This family includes variants with Bessel responses (MAX7409/MAX7413) and Butterworth responses (MAX7410/MAX7414). The E-series parts are rated for extended industrial temperatures (-40°C to +85°C), while C-series parts cover commercial ranges.

Replacement Considerations

Direct replacements within the same family include MAX7414CUA (commercial temperature range) and MAX7414EPA (plastic DIP package). For different supply voltages, consider MAX7410EUA (+5V supply). Verify pin compatibility and thermal requirements when substituting.