Question

Question 1 in red Question 2 in blue In practice, the output of the differentiator in Figure 1 is quite sensitive to the noise perturbation, especially in the high frequency regime (Can you explain why?). For this reason, we incorporate a series resistor at the input as shown in Figure 3 (Can you explain the role of this resistor). N VCC -V cc Figure 1: A simple differentiator based on the RC Op-Amp circuit R1 AVCC Vo -V cc Figure 3: A practical differentiator

Need help answering the two underlined questions using the given diagrams. Thank you

Answer 1

from Bode pilet it in clear that gain of differential for without Rais higher at high form. le it will increase gain of iscine at higher foon again Bode plot of differentiator with Rp it come Confstant at high fogo that's why we use Entra desixfence Rz with Capacitor

IR Vera from VGC va = "=166 G TO from VGC va = Voo =0 AVOV Pasti + as 6-v. RR to -e, svi xh,= vo RC,St1 → Y = - RCS vý = Vo = (AC) SC-vs) VoRCS v; lt Riya, via He ju) = -RC ju MC) = -RGS TIS THij wil = Row >> lefuilder Hijwill as o dil dec PO Blder - 20dB/des - -