Question

A 10-bit successive approximation type A/D converter has quantization error of 10 mV. The digital output corresponding to an analog input of 4.365 V would be

• A. 0110110110
• B. 0100100100
• C. 0110110100
• D. 1101011100

Hint:

In ADCs with successive approximation, the output binary value is the closest approximation to the analog input, considering the quantization error.

Answer 1

The Correct Option is C

A successive approximation ADC works by comparing the input voltage to a reference and adjusting its approximation until it matches the input voltage within the quantization error. Given a quantization error of 10 mV, the correct 10-bit output that approximates the input value of 4.365 V corresponds to the binary value \( 0110110100 \), which is the closest to the input voltage in the ADC's resolution. Therefore, the correct answer is option (3).