4. An 8 bit Analog to Digital (A/D) Converter is capable of accepting an input voltage of 0 - 10 volts. a) a. What is the minimum value of input voltage to cause a digital output change of the LSB (least significant bit) ? b. What input voltage will cause all 1's at the ADC's output? c. What is the digital output code if the applied input voltage is 7.3 volts Analog Voltage In = (Decimal Value of Dig Out) * Resolution Resolution = Vrange / 2" → 10V / 2 → 0.03906V/bit Resolution = 0.03906V/bit The minimum value of the input voltage is 0.03906V/Bit to cause a digital output change of the LSB b) The input voltage that will cause all 1's at the 8-bit ADC output will be 10V, because this is the maximum input voltage for the 8-bit ADC. c) Analog Voltage In = (Decimal Value of Dig Out) * Resolution 7.3V = (Decimal value of Dig Out) * (0.03906V/bit) → 7.3V/ (0.03906V/bit) → 186.891 (10) 186.891 (10) 187 (10) 1872 93 → R = 1 932 46 → R = 1 46223 → R = 0 23211 → R = 1 112 5 → R = 1 5+2=2 R=1 2+2=1 R=0| 1 2 0 R = 1 187 (10) = 10111011(2) (The digital output code) The digital output code is 10111011(2) for the input Voltage of 7.3V