Question

What is the output of a 4-bit analog to digital convert if the low reference voltage is 0V, the high reference voltage is 5V, and the analog input voltage is 5V? Give your answer as decimal number.

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Answer #1

4-bit analog to digital converter outputs binary number in range of 0000 to 1111 (i.e. 0 to 15).

Since low reference voltage is 0V which corresponds to binary 0000 or decimal 0.

Since high reference voltage is 5V which corresponds to binary 1111 or decimal 15.

Hence analog input voltage of 5V to 4-bit ADC will output decimal 15.

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