A Low-Pass Sallen-Key Two-Pole) Filter Has an Upper Cutoff Frequency

question 31

Multiple Choice

A low-pass Sallen-Key two-pole) filter has an upper cutoff frequency of 2 kHz and a Butterworth response curve. The voltage gain of the circuit decreases by approximately if its input frequency increases to 200 kHz.

• A) 20 dB
• B) 40 dB
• C) 60 dB
• D) 80 dB

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