1. Draw the circuit diagram of a modified BJT current source and derive an expression for its current gain and output resistance.

2. Give the schematic symbol of an op-amp specifying the functions of each pin. Also draw the block diagram of an op-amp and briefly describe the function of each block.

3. Define the terms -SVRR and CMRR. Briefly explain the procedure for determining the CMRR value of an op-amp.

4. Draw the high frequency equivalent circuit of an op-amp. Derive an expression for the open-loop voltage gain as a function of frequency.

5. Derive an expression for the output voltage of a non-inverting adder amplifier using op-amp having three inputs. Also draw its circuit diagram.

6. Draw the circuit diagram of a circuit voltage-to-current converter with grounded load and floating load. Also derive an expression for the output voltage of the two circuits.

7. Give the circuit diagram of a second-order Butterworth low-pass filter. Derive an expression for its transfer function and hence determine the value of various filter parameters.

8. Give the circuit diagram of a square wave generator using an op-amp. Also derive an expression for the frequency of output waveform.

9. Explain the operation of a sample and hold circuit with the help of a neatly labelled diagram.

10. Write short notes on any two of the following:

Voltage-Controlled Oscillation

Anti-Logarithmic Amplifier

Level Translator