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1. Analog to Digital Converter Design: Prepare a review about Analog to Digital Convertors (definition, application area, and types should be mentioned). - Simulate the below circuit and report the results (LTspice, MATLAB, or any other software could be used). Explain all components (capacitors, inductors, resistors, transistors and etc) functions. Design a 4-bit ADC to convert the following analog voltages to digital values. (2V, 2.5V, 3V, 3.5V and 4V) Rs 10k F Vec 150 pF CLK R Do SW₁ 20 19 18 150 ww 150 www D₁ 17 D2 16 R₁ Dy 15 2k 14 D4 VRI 500 150 ww 150 ww 150 ww 150 ww 150 ww 150 ww D5 8 13 VR: 10k D6 9 12 D7 2k 10 11 0.1 μF Adjust the VR, to get the voltage of 2.5V at the Vref/2 (pin9) terminal. Adjust the VR₂ to get the voltage of OV at the input terminal (pin6). Check the result. Change the VR₂ and record the results in below table. 2.5 2.5 2.5 2.5 2.5 2.5 2.5 2.5 Vref Vin 0 0.5 1 1.5 2 2.5 3 4 Output C₂ 0.1 μF Hli 2 4 à 700 44 A HH NA 55 2.5 3.5