Topic: Digital Circuits
A 12-bit ADC is operating with a 1 $\mu s$ clock period and total conversion time is seen to be 14 $\mu s$ always. The ADC must be of the type
- A. Flash type
- B. Counting type
- C. Integrating type
- D. Successive approximation type
Answer: D. Successive approximation type
Explanation: Repeated in previous year. (Successive approximation ADCs typically require a fixed number of clock cycles proportional to the number of bits, roughly $n$ to $n+2$ cycles).