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+//Chapter 9_Active Filters

+//Caption : Unity gain frequency and Capacitor determination

+//Example9.12: a)Determine the unity gain frequency,Fo,of a switched capacitor integrator having following specifications:Fclk=1 kHz, C1=1 pF,and C2=15.9 pF

+//b)What is the value of capacitor for an RC integrator having R=1.6 mega Ohm and Fo as obtained in part(a).

+//a)Solution:

+clear;

+clc;

+C1=1*10^-12;//source capacitor in F

+C2=15.9*10^-12;//feedback capacitor

+Fclk=1*10^3;//clock frequency or switching frequency

+Fo=1*(C1/C2)*Fclk/(2*%pi);

+disp('Hz',Fo,'unity gain frequency is:')

+//b)Solution:

+R=1.6*10^6;//resistor of RC integrator in Ohm

+C=1/(2*%pi*Fo*R);

+disp('nF',C*10^9,'for Rc integrator value of capacitor needed is:')

+// Note:

+// Obtained results are approximated to nearest values,thus Fo=10 Hz and C=10 nF
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