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, 3.3V and 4V) R, 10k www Vee 20 150 pF CLK R 19 Do 150 18 Di 17 w 150 www SW D: 150 16 ww www 150 Dy 15 www C: 0.1uF 150 D4 14 ww VR Ds 500 8 13 A VR, 10k D6 9 12 D1 10 11 150 www 150 www 150 ww 0.1uF Adjust the VR, to get the voltage of 2.5V at the Vref/2 (pin9) terminal. Adjust the VR, to get the voltage of OV at the input terminal (pin6). Check the result. Change the Vand record the results in below table. 25 2.5 2.5 2.5 2.5 2.5 2.5 2.5 2.5 in Vin 9 0.5 1 1.5 2 2.5 3 3.5 4 Output