The difference between analog voltage represented by two adjacent digital codes of an analog to digital converter isa)Accuracyb)Resolutionc)Quantizationd)PrecisionCorrect answer is option 'B'. Can you explain this answer?

Question

Answer

Resolution refers to the number of bits used to represent the analog voltage in the digital domain.

When an analog voltage is converted into a digital code by an Analog to Digital Converter (ADC), it is quantized into discrete levels based on the resolution of the ADC. The resolution determines the smallest change in voltage that can be represented by the ADC. Each additional bit in the digital code doubles the number of possible levels, thereby increasing the resolution.

Accuracy, on the other hand, refers to how close the converted digital code is to the actual analog voltage.

Accuracy is influenced by various factors such as linearity, offset error, gain error, and noise in the ADC. These factors can introduce errors in the conversion process, resulting in a deviation between the actual analog voltage and the digital code assigned to it.

Quantization is the process of mapping continuous analog values to discrete digital values.

When an analog voltage is converted to a digital code, it is quantized into a finite number of levels. This process introduces quantization error, which is the difference between the actual analog voltage and the nearest representable digital code. The quantization error is determined by the resolution of the ADC.

Precision refers to the level of detail or granularity in the representation of the analog voltage.

It is a measure of how closely spaced the digital codes are in relation to the actual analog voltage. Higher precision means smaller intervals between adjacent digital codes, allowing for more accurate representation of the analog signal.

In conclusion, the difference between the analog voltage represented by two adjacent digital codes of an ADC is the resolution. The resolution determines the smallest change in voltage that can be represented, and it directly affects the accuracy and precision of the conversion process. Higher resolution leads to better accuracy and precision in representing the analog voltage.

Answer

Resolution: It is defined as the smallest change in the analog output voltage corresponding to a change of one bit in the digital output.

The percentage resolution (%R) of an n-bit DAC is:

The resolution of an n-bit DAC with a range of output voltage from 0 to V is given by:

Hence the difference between analog voltage represented by two adjacent digital codes of an analog to digital converter is called resolution.

Hence option (B) is the correct answer.

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