An embedded system with an 8-bit analog-to-digital converter is connected to a t

Question

An embedded system with an 8-bit analog-to-digital converter is connected to a transducer with an output voltage of 20 millivolts. This signal is then amplified by an amplifier with a gain of 50. Assume that this signal level is appropriate for the ADC input. If the reference voltage of the ADC converter is 2.5 volts, what will be the output of the ADC in binary form?        A. 01100110
       B. 11111111
       C. 00000000
       D. 01111011 An embedded system with an 8-bit analog-to-digital converter is connected to a transducer with an output voltage of 20 millivolts. This signal is then amplified by an amplifier with a gain of 50. Assume that this signal level is appropriate for the ADC input. If the reference voltage of the ADC converter is 2.5 volts, what will be the output of the ADC in binary form?

Explanation / Answer

reference voltage is 2.5 volts. so this is maximum and it represents 11111111 ( 255) as binary output.
now output of 20millivolts given to amplifier with gain 50.
so resultant output = 20*10^-3 * 50 = 1 volt.

2.5 represents 255 ( 11111111)
so how much 1 volt will represent

= 1/2.5 * 255 = 102 equivalent binary number = 01100110

A. 01100110

option A is answer.

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