Where pass band gain of the filter is 5, frequency and the high cut-off frequency of the filter are 3000Hz and 1kHz.
A. None of the mentioned
B. Gain magnitude = -1.03dB , φ =63.32o
C. Gain magnitude = -5.19dB , φ =71.56o
D. Gain magnitude = -4.94dB , φ =90o
Answer:A
Where pass band gain of the filter is 5, frequency and the high cut-off frequency of the filter are 3000Hz and 1kHz.
A. None of the mentioned B. Gain magnitude = -1.03dB , φ =63.32o C. Gain magnitude = -5.19dB , φ =71.56o D. Gain magnitude = -4.94dB , φ =90o
Explanation: The gain of the second order low pass filter, [VO /Vin] =AF/ √ [1+(f/fh)2] =5/ √[1+(3000/1000)4] =5/9.055 =0.55.