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Choose the value of RF and C for a 5kHz input signal to obtain good differentiation.

Choose the value of RF and C for a 5kHz input signal to obtain good differentiation. Correct Answer RF = 1.6×103Ω, C1 = 0.47×10-6F

For a good differentiation, the time period of the input signal must be larger than or equal to RF C1 i.e. T ≥ RF×C1 Given f=5kHz , T=1/f = 1/5kHz = 2×10-4 –> Equ(1) RF×C1 = 0.4µF×1.6kΩ =7.52×10-4 –> Equ(2) Hence Equ(1) ≥ Equ(2).

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