Virtual lab

Ring Oscillator

1.One of the important criteria to have oscillations in a ring oscillator is

a) Even number of inverter stages

b) Odd number of inverter stages

c) Does not depend on the number of inverter stages

d) None of the above

2. For an N-inverter chain ring oscillator with frequency of oscillation 'f', the propagation delay of the gate will be

a) N*f

b) 2N*f

c) 1/(N*f)

d)1/(2N*f)

3. The oscillation in a ring oscillator is ensured when

a) The number of inverter stages are larger

b)The rise time is larger

c) The fall time is larger

d) The delay of each inverter is smaller

4. To increase the frequency of oscillation, which of the following can be utilized? (a) Applied power supply voltage may be increased. (b) Reduce the number of inverter stages.

a) (a) only

b) (b) only

c) both (a) and (b)

d) neither (a) nor (b)

5.How the frequency of oscillation affected by the increase in temperature of a ring oscillator?

a)frequency increases with increase in temperature

b) frequency decreases with increase in temperature

c)frequency remains the same

d)frequency increases first and then decreases

Shakshat Virtual Lab

INDIAN INSTITUTE OF TECHNOLOGY GUWAHATI