1. a) What is the concept of virtual ground in Op-amp? b) What is Barkhausen criterion? What is its need? c) Define CMRR. If CMRR of an Op-Amp is 80dB and common mode gain is -0.5,what is the differential mode gain. d) What is piezo-electric effect? Write the use of crystal oscillator. e) What is the effect of negative feedback on stability? Explain. 2. With a neat diagram describe the operation of crystal oscillator. 3. Draw a circuit of Trans-impedance amplifier and calculate its input and output impedance with feedback. 4. Determine 1. a) What is the concept of virtual ground in Op-amp? b) What is Barkhausen criterion? What is its need? c) Define CMRR. If CMRR of an Op-Amp is 80dB and common mode gain is -0.5,what is the differential mode gain. d) What is piezo-electric effect? Write the use of crystal oscillator. e) What is the effect of negative feedback on stability? Explain.
1. a) What is the concept of virtual ground in Op-amp?b) What is
Barkhausen criterion? What is its need? c) Define CMRR. If CMRR of
an Op-Amp is 80dB and common mode gain is -0.5,what is the
differential mode gain.d) What is piezo-electric effect? Write the
use of crystal oscillator.e) What is the effect of negative
feedback on stability? Explain.2. With a neat diagram describe the
operation of crystal oscillator. 3. Draw a circuit of
Trans-impedance amplifier and calculate its input and output
impedance with feedback. 4. Determine
1. a) What is the concept of virtual ground in Op-amp? b) What
is Barkhausen criterion? What is its need? c) Define CMRR. If CMRR
of an Op-Amp is 80dB and common mode gain is -0.5,what is the
differential mode gain.d) What is piezo-electric effect? Write the
use of crystal oscillator. e) What is the effect of negative
feedback on stability? Explain. 2. With a neat diagram describe the
operation of crystal oscillator. 3. Draw a circuit of
Trans-impedance amplifier and calculate its input and output
impedance with feedback. 4. Determine
