MAX7403CSA+

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MAX7403CSA+ Application Field and Working Principle

The MAX7403CSA+ is an active low-pass filter with a 4th-order Butterworth response intended to be used in a digital audio processing environment. It can be used to filter out non-audio signals, such as DC offsets, common-mode noise and high-frequency harmonics, providing clean and distortion-free audio signals. The MAX7403CSA+ is available in an 8-pin SOIC-8 package and is ideal for applications where size and low power consumption are primary considerations.

MAX7403CSA+ Features

• High performance, active low-pass filter designed for use in digital audio systems.
• 4th-order Butterworth filter with -3 dB cut-off frequency range from 10 Hz to 160 kHz.
• Low power consumption of only 2.5 mA.
• High input and low output impedance.
• Available in an 8-pin SOIC-8 package.

MAX7403CSA+ Applications

The MAX7403CSA+ is most suited for applications requiring amplification and filtering of stereo digital audio signals. It can be used in home audio systems, CD players, digital audio workstations, audio amplifiers, digital mixers, and portable media players, to name a few.

MAX7403CSA+ Working Principle

The MAX7403CSA+ is a fully integrated, active low-pass filter. It includes low-noise, amplifier stages and a fourth-order, Butterworth response filter. The amplifier stages provide high input impedances and low output impedances, which makes them ideal for use in applications with low-level signals. The low-pass filter allows only signals below a cut-off frequency to pass through. The cut-off frequency can be adjusted from 10 Hz to 160 kHz, depending on the application requirements.

The filter is designed to operate from a single power supply with low power consumption of only 2.5 mA. It features a frequency and gain control input, which allows users to tailor the filter characteristics to their specific needs. The MAX7403CSA+ also features ESDA protection for enhanced reliability.

Conclusion

The MAX7403CSA+ is an active low-pass filter designed for digital audio systems. It features a 4th-order Butterworth response filter, a frequency and gain control input and low power consumption of only 2.5 mA. The MAX7403CSA+ is suitable for a wide range of audio applications and is available in an 8-pin SOIC-8 package. The MAX7403CSA+ is a cost-effective solution for digital audio signal processing.

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