What is the step size or the resolution of an A/D converter?
A. ∆ = (R)/2(b+1)
B. ∆ = (R )/2(b-1)
C. ∆ = (R )/3(b+1)
D. ∆ = (R )/2
Answer:A
What is the step size or the resolution of an A/D converter?
A. ∆ = (R)/2(b+1) B. ∆ = (R )/2(b-1) C. ∆ = (R )/3(b+1) D. ∆ = (R )/2
Explanation: The coding process in an A /D converter assigns a unique binary number to each quantization level. If we have L levels, we need at least L different binary numbers. With a word length of b + 1 bits we can represent 2^(b+1) distinct binary numbers. Hence we should have 2^(b+1) > L or, equivalently, b + 1 > log2 L. Then the step size or the resolution of the A /D converter is given by