Hi ashish,
I have the following doubts from your circuit.
1. The CV hast to vary from 1/3VCC to 2/3VCC, but I see in your circuit, sine wave varying much lower than 1/3VCC and still output is present.
2. What max freq can i feed to pin no.5 . What should be the corresponding R and C values.
3. By looking at your waveform of pulse width, I am unable to infer the instantaneous amplitude of the sine wave. This is my original question. Relation between pulse width and the magnitude of control voltage so that I can say that if I feed say 5 V, then I would get corresponding PWM output and so on.