JNTUK B.Tech R23 3-1 Analog & Digital IC Applications subject ECE Branch imp questions

UNIT - I: Operational Amplifier

2 Marks Questions:

1. Compare ideal and practical Op-Amp characteristics.
2. What are the main features of 741 Op-Amp?
3. Define CMRR and slew rate in Op-Amp specifications.

5 Marks Questions:

1. Explain the DC and AC characteristics of operational amplifiers with their significance.
2. Analyze inverting and non-inverting amplifier configurations with gain calculations.
3. Design and analyze differential amplifier and instrumentation amplifier circuits.
4. Explain the operation of Op-Amp based differentiators and integrators with frequency response.
5. Describe the working of comparators and Schmitt trigger circuits with hysteresis analysis.
6. Explain voltage regulator circuits including 723 regulator and three terminal voltage regulators.

UNIT - II: Op-Amp, IC-555 & IC565 Applications

2 Marks Questions:

1. What are the advantages of active filters over passive filters?
2. Define quality factor (Q) in band pass filters.
3. What is the basic principle of Phase Locked Loop (PLL)?

5 Marks Questions:

1. Design and analyze active band pass, band reject and all pass filter circuits.
2. Analyze first order Butterworth low pass and high pass filters with frequency response.
3. Explain waveform generators for triangular, sawtooth and square wave using Op-Amps.
4. Describe IC555 timer functional diagram and analyze monostable and astable operations.
5. Explain applications of IC555 timer in pulse generation and timing circuits.
6. Describe IC565 PLL block diagram, working principle and its applications in communication.

UNIT - III: Data Converters

2 Marks Questions:

1. What is resolution in DAC and ADC systems?
2. Define conversion time and settling time in data converters.
3. What are the main specifications of DAC and ADC?

5 Marks Questions:

1. Explain different DAC techniques including weighted resistor and R-2R ladder DACs.
2. Analyze R-2R ladder DAC and inverted R-2R DAC with circuit diagrams and operations.
3. Describe parallel comparator type ADC (flash ADC) with its advantages and limitations.
4. Explain counter type ADC and successive approximation ADC with timing diagrams.
5. Analyze dual slope ADC operation with integration and de-integration phases.
6. Compare different types of ADCs and DACs with their specifications and applications.

UNIT - IV: Combinational Logic ICs

2 Marks Questions:

1. What are the differences between TTL and CMOS logic families?
2. Define fan-out and noise margin in digital ICs.
3. What is the function of priority encoder?

5 Marks Questions:

1. Explain code converters including BCD to Gray and Gray to BCD converters using 74XX series.
2. Describe decoders and LED/LCD drivers with 7-segment display interfacing.
3. Analyze encoders and priority encoders with truth tables and applications.
4. Explain multiplexers and de-multiplexers with data selection and distribution applications.
5. Design parallel binary adder/subtractor circuits using 74XX series ICs.
6. Describe magnitude comparators and parity generators/checkers with their implementations.

UNIT - V: Sequential Logic ICs and Memories

2 Marks Questions:

1. What is the difference between synchronous and asynchronous counters?
2. Compare static RAM and dynamic RAM.
3. What are the different types of ROMs?

5 Marks Questions:

1. Explain all types of flip-flops (SR, JK, D, T) using 74XX series with truth tables.
2. Design synchronous counters and decade counters using flip-flops and logic gates.
3. Analyze different types of shift registers (SISO, SIPO, PISO, PIPO) with applications.
4. Explain ROM architecture and different types of ROMs with their applications.
5. Describe RAM architecture comparing static and dynamic RAMs with their characteristics.
6. Compare sequential logic circuits implementation using 74XX and CMOS 40XX series ICs.