Correct Answer - Option 4 : Successive approximation ADC
Concept:
A successive-approximation ADC is a type of analog-to-digital converter that converts a continuous analog waveform into a discrete digital representation using a binary search through all possible quantization levels before finally converging upon a digital output for each analog voltage conversion.
For an N-bit successive approximation ADC, the conversion time is
= N T
Where T is the time period of the clock pulse.
∴ The conversion time does not depend on the magnitude of the input voltage.
