Jawaharlal Nehru Technological University Hyderabad
Jawaharlal Nehru Technological University Hyderabad B.Tech III ANALOG AND DIGITAL IC APPLICATIONS Previous Question Paper (March - 2021 - R16)
Answer any five questions. All questions carry equal marks.
Main
Derive the voltage gain of op amp Inverting amplifier and non-inverting amplifier.
Answer
For an Inverting Amplifier, the non-inverting terminal is grounded (0V). By virtual ground concept, the inverting terminal is also at 0V. Applying Kirchhoff's Current Law at the inverting node:
Solving for the gain A_v = V_out / V_in:
For a Non-Inverting Amplifier, the input voltage V_in is applied directly to the non-inverting terminal. By virtual ground, the inverting terminal voltage is also V_in. The voltage at the inverting node is determined by the voltage divider formed by R_1 and R_f:
Rearranging for the gain A_v = V_out / V_in:
Design an amplifier with a gain of -10 and input resistance equal to 10 KΩ using Op amp.
Answer
To achieve a gain of -10, an inverting amplifier configuration is required. The gain formula is A_v = -R_f / R_1 = -10, which implies R_f = 10 * R_1. The input resistance of an inverting amplifier is equal to the input resistor R_1. Given the required input resistance of 10 KΩ:
- Set R_1 = 10 KΩ
- Calculate R_f = 10 * 10 KΩ = 100 KΩ
Thus, connect a 10 KΩ resistor at the input and a 100 KΩ feedback resistor between the output and the inverting terminal, with the non-inverting terminal connected to ground.
Explain voltage to current converter using op amp.
Answer
Sign in to view the complete answer paper.
Describe the principle of Op amp as Divider and Multiplier with constant.
Answer
Sign in to view the complete answer paper.
Explain monostable multivibrator with necessary circuit and waveforms.
Answer
Sign in to view the complete answer paper.
Write the classification of voltage regulator.
Answer
Sign in to view the complete answer paper.
Explain in detail the design of first order low pass filter.
Answer
Sign in to view the complete answer paper.
Describe quadrature type waveform oscillator.
Answer
Sign in to view the complete answer paper.
Explain the function of Astable multivibrator using 555 timer.
Answer
Sign in to view the complete answer paper.
Explain any one application of 555 timer in Astable mode.
Answer
Sign in to view the complete answer paper.
Illustrate the operation of Dual slope ADC.
Answer
Sign in to view the complete answer paper.
Calculate the values of LSB, MSB and full scale output for a 8 bit DAC in 0 to 10 V range.
Answer
Sign in to view the complete answer paper.
Explain the standard TTL NAND gate circuit.
Answer
Sign in to view the complete answer paper.
Illustrate CMOS driving TTL and TTL driving CMOS.
Answer
Sign in to view the complete answer paper.
Design a 3-bit binary up/down synchronous counter.
Answer
Sign in to view the complete answer paper.
Design a 4-bit parallel in serial out shift register.
Answer
Sign in to view the complete answer paper.