Question
Which of the following is a type of analog-to-digital conversion?
Answer Options
- A) Successive approximation
- B) Harmonic regeneration
- C) Level shifting
- D) Phase reversal
Correct Answer: A
Explanation
Analog-to-Digital Conversion (ADC) is the process of translating a continuous analog voltage signal (like audio or RF) into a discrete digital representation. There are many different technical architectures for achieving this, each with trade-offs in speed, power, and resolution.
Successive approximation is a widely used and common type of \text{ADC} architecture, favored for its good balance between speed and high resolution. The circuit works by using a digital-to-analog converter (\text{DAC}) and a comparator to successively narrow the range in which the input voltage lies, eventually approximating the value to within the \text{ADC}'s resolution limit (e.g., 8-bit, 10-bit, or more).
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