MAX7414CPA+

Overview

The MAX7414CPA+ is a 5th-order, lowpass, switched-capacitor filter (SCF) from the MAX7409/MAX7410/MAX7413/MAX7414 family. It provides a Butterworth response and operates from a single +3V supply with a typical supply current of 1.2mA in operating mode and 0.2µA in shutdown mode. The corner frequency is clock-tunable from 1Hz to 15kHz using a 100:1 clock-to-corner ratio. It features an internal oscillator or external clock input, an offset adjust pin, and is housed in an 8-pin Plastic DIP package with an operating temperature range of 0°C to +70°C.

Feature Summary

• Butterworth filter response for maximally flat passband performance
• Clock-tunable corner frequency ranging from 1Hz to 15kHz
• Low-power operation with dedicated shutdown mode
• Single-supply +3V operation capability

Applications

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

Procurement Notes

Verify the specific suffix 'CPA+' against the manufacturer's official ordering information to confirm the package type, temperature range, and lead-free status. Ensure the component meets the required environmental standards for the intended application before procurement.

Selection Notes

Select this component when a Butterworth response is required for applications needing a maximally flat passband. It is suitable for designs requiring low power consumption and single-supply +3V operation. Consider the MAX7413 if a Bessel response is preferred for faster settling times.

Part Context

This device belongs to the MAX7409/MAX7410/MAX7413/MAX7414 family of 5th-order lowpass switched-capacitor filters. While the MAX7409 and MAX7413 offer Bessel responses, the MAX7414 specifically provides a Butterworth response. These devices share similar architectures but differ in filter characteristics and supply voltage requirements (+5V vs +3V).

Replacement Considerations

The MAX7413CUA+ offers a Bessel response instead of Butterworth. The MAX7414EUA+ provides the same Butterworth response but in an 8-pin µMAX package with an extended temperature range (-40°C to +85°C).