Question
Which of the following is a measure of the quality of an analog-to-digital converter?
Answer Options
- A) Total harmonic distortion
- B) Peak envelope power
- C) Reciprocal mixing
- D) Power factor
Correct Answer: A
Explanation
The quality of an Analog-to-Digital Converter (\text{ADC}) is determined by how accurately it converts the analog waveform into a digital representation. Any deviation from the ideal waveform in the resulting digital output is classified as distortion or noise introduced by the conversion process itself.
Total harmonic distortion (\text{THD}) is a primary measure of the quality of an \text{ADC}. \text{THD} measures the power of all harmonic components (spurious signals) present in the digital output relative to the power of a single, pure sine wave applied to the input. A lower \text{THD} indicates a more linear and accurate conversion across the \text{ADC}'s voltage range.
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