MF10CCWM

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Electronic filtering, a technique used to remove unwanted signals from a desired signal, among other applications, is a critical function in many electronic design applications. Usually, filters are divided into two main categories: active and passive. Active filters are capable of boosting signal levels, while passive filters are designed to attenuate signals. This article will focus on active filters with a specific focus on MF10CCWM application fields and working principle.

What is MF10CCWM?

MF10CCWM is a 10th-order Chebyshev active low-pass filter with a cutoff frequency of 20 kHz. It was designed as a linear active filter for audio applications by STMicroelectronics. This filter is rated for -3 dB Vpp at a 20 Hz corner frequency and can handle up to +75 dB signal-to-noise ratio. By using this filter, designers can take advantage of the precision performance and low passband ripple of the Chebyshev filter.

MF10CCWM Application Fields

As mentioned above, the MF10CCWM low-pass filter is primarily used for audio applications. Its active design allows for improved performance in removing undesired frequency components from audio signals. This is an especially important task in pro-audio, where maintaining a clean and distortion-free signal is critical. The filter can also be used to reduce noise in other applications, such as data-modulating circuits, digital-to-analog converters, pulse shapers and signal generators.

In addition to its audio uses, the filter can also be applied in other areas of electronic design. For example, its low passband ripple and cutoff frequency characteristics can be used in power control circuits. The filter can be used to limit the bandwith of a signal and prevent overshoot, reducing the possibility of interference and having a beneficial effect on power efficiency.

MF10CCWM Working Principle

The filter works based on STMicroelectronics’ proprietary “Active Cantilever Resonator” principle. This filter type is typically implemented in three stages, followed by a single pole low-pass filter. In the first stage, a high pass type filter is used to remove audible frequencies that are greater than the cutoff frequency. In the second stage, a low pass type filter is used to remove audible frequencies that are lower than the cutoff frequency. In the third stage, the two filters are combined to obtain the wanted signal. The final stage consists of a single pole low-pass filter to further reduceripple.

The filter’s operating frequency range is determined by the amplifier’s DC operating point and the active components used. The gain of the filter is also determined by the amplifier’s DC operating point. In order to achieve optimal performance, the input signal should be amplified before it enters the filter. A final gain adjustment is then performed using the amplifier’s DC operating point.

Conclusion

The MF10CCWM active low-pass filter is a versatile tool for audio, data modulation, and other applications. The precision performance and low passband ripple of the Chebyshev filter makes it well-suited for removing unwanted signals from desired signals. Furthermore, its low passband ripple and cutoff frequency characteristics can be used to improve power efficiency in power control circuits. And, finally, its working principle is based on STMicroelectronics’ proprietary “Active Cantilever Resonator” principle.

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