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Very selective notch filter with MF10-N

Other Parts Discussed in Thread: MF10-N

Hello,

I need to implement a very selective 2280Hz notch filter in order to remove that component in an audio signal.

Is it possible to achieve it with the MF10-N

Any other alternative?

Many thanks

  • The datasheet gives a spec of f_o * Q <= 200kHz

    So at f_o = 2280Hz, I suppose this suggests you could achieve a Q (the larger the Q the more selective your filter) of up to 87.

    Perhaps this is selective enough for you? I graphed the 2nd order transfer function,

    [s^2 + (Omega)^2 ]/(s^2 + (Omega)*s/Q + (Omega)^2)

    with a Q of 87 and with an Omega = 2*Pi*2280 and got the following: