Homework Solution: Figure P2.86 shows a circuit that performs a low-pass STC function. Such a circuit is known as a first-order, low-pass active filte…

    Figure P2.86 shows a circuit that performs a low-pass STC function. Such a circuit is known as a first-order, low-pass active filter. Derive the transfer function and show that the dc gain is (-R2/R1) and the 3-dB frequency wo=1/CR2. Design the circuit to obtain an input resistance of 10kOhms, a dc gain of 40 dB, and a 3-dB frequency of 1kHz. At what frequency does the magnitude of the transfer function reduce to unity? You should do this one using the "virtual ground" technique to keep the analysis simple. Please simulate the frequency response of the circuit in PSPICE and include an annotated graph and write some observations about it.

    Expert Answer

    Figure P2.86 exhibitions a circumference that performs a low-pass STC character. Such a circumference is notorious as a first-order, low-pass erratic percolate. Derive the sell character and exhibition that the dc execute is (-R2/R1) and the 3-dB abundance wo=1/CR2. Design the circumference to shape an input opposition of 10kOhms, a dc execute of 40 dB, and a 3-dB abundance of 1kHz. At what abundance does the heap of the sell character subject to indivisibility? You should do this individual using the “virtual ground” technique to sustain the segregation unsophisticated. Please assume the abundance exculpation of the circumference in PSPICE and understand an annotated graph and transcribe some observations encircling it.

    Expert Response