Part B: Practical Simulation and Problem-Solving (30 Marks) 1. DAC Output Calculation (10 Marks) A 4-bit R-2R DAC is connected to a reference voltage of 5V. Calculate the output voltage for the following digital inputs: a. 0000 b. 0101 c. 1010 d. 1111 Show all calculation steps and explain the relationship between input bits and output voltage.
2. ADC Quantization (10 Marks) A 3-bit ADC operates over a 0V to 8V range: a. Calculate the resolution of the ADC. b. Determine the digital output for input voltages of 2.5V, 5.5V, and 7.9V. c. Discuss how quantization error arises in ADCs. 3. Simulation Task (10 Marks) Using any circuit simulation software (e.g., Proteus, Multisim, or MATLAB Simulink), simulate: a. An R-2R Ladder DAC and verify the output voltage for a digital input of 1010. b. A Successive Approximation ADC and verify the digital output for an analog input of 3.75V. Include screenshots of your simulated circuit and output results.