Active Low Pass Filter
Sallen-Key topology, gain, second order response.
Active Low Pass Filter
Test your knowledge of Sallen-Key LPF topology, second-order response characteristics, and Butterworth design conditions.
Question 1 of 3
Q1.A second-order Sallen-Key LPF has the transfer function H(s) = wn^2 / (s^2 + (wn/Q)*s + wn^2). For a Butterworth response (maximally flat passband), the Q factor must be:
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