MAX7400ESA+T

MAX7400ESA+T Active Filter Application Field and Working Principle

The MAX7400ESA+T active filter is an integrated, low-noise, voltage-controlled, 12th-order, low-pass filter capable of achieving a superior signal-to-noise ratio with very low distortion even at high frequencies. It is designed to filter out conductive noise in acoustic systems, as well as improve the signal-to-noise ratio for CD players and cassette decks. The MAX7400ESA+T is also suitable for use in speech recognition systems and other audio or multimedia applications.

The MAX7400ESA+T active filter features a 12th order lowpass filter with better performance than conventional 6th order and 8th order low pass filters. It has a low noise floor and can remove up to 50dB of noise at 20 kHz. The filter’s flat response ensures clear and accurate sound reproduction, even when it is used to filter out higher frequencies. Its superior dynamic range also ensures that the signal remains consistent even at very low noise levels.

The MAX7400ESA+T active filter uses a charge-pump voltage-controlled oscillator (VCO) architecture with a variable-sized capacitor to adjust its center frequency. The VCO is coupled with a variable-width, active lowpass filter that is controlled by the VCO output. The variable-width filter is used to reduce the gain of the filter at higher frequencies for better signal-to-noise ratio. Additionally, the MAX7400ESA+T active filter has a programmable gain stage which can be used to shape the response of the filter to match the user’s application requirements.

The MAX7400ESA+T active filter is an excellent choice for applications such as high fidelity audio, speech recognition systems, multimedia, and acoustic systems. It is capable of providing a superior signal-to-noise ratio with very low distortion even at high frequencies. The MAX7400ESA+T active filter is a highly flexible device that can be easily configured to meet any application requirement.