A band-pass filter can be constructed by cascading two Sallen-Key filters of the active high-pass filter and low-pass. The two filters produce a band-pass filter where the low corner frequency, fL = 300 kHz whereas the high-corner frequency, fH = 500 kHz. 1. Calculate the resistances (RA1, RA2, RB1, RB2) for both filters by using these capacitors value, CA1= CA2 = CB1 = CB2 = 7pF. In addition, the value of the resistors must follow these conditions: the resistance in low-pass filter is RA2=2RA1 and in high-pass filter is RB1=3RB2. Answer : RA1 = _____kΩ RA2 = _____kΩ RB1 =_____kΩ RB2 =_____kΩ 2. Calculate center frequency and bandwidth. Answer : Center frequency , f0=_____kHz
A band-pass filter can be constructed by cascading two Sallen-Key filters of the active high-pass filter and low-pass. The two filters produce a band-pass filter where the low corner frequency, fL = 300 kHz whereas the high-corner frequency, fH = 500 kHz.
1. Calculate the resistances (RA1, RA2, RB1, RB2) for both filters by using these capacitors value, CA1= CA2 = CB1 = CB2 = 7pF. In addition, the value of the resistors must follow these conditions: the resistance in low-pass filter is RA2=2RA1 and in high-pass filter is RB1=3RB2.
Answer : RA1 = _____kΩ
RA2 = _____kΩ
RB1 =_____kΩ
RB2 =_____kΩ
2. Calculate center frequency and bandwidth.
Answer : Center frequency , f0=_____kHz
Bandwidth, BW=_____kHz
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