Question

In the practical A/D converters, if the difference between the values at which the first transition and the last transition occur is not equal to FS – 2LSB, then such error is known as _________

(a) Scale-factor error

(b) Offset error

(c) Linearity error

(d) All of the mentioned

I have been asked this question in an interview.

My doubt is from Quantization and Coding topic in section Sampling and Reconstruction of Signals of Digital Signal Processing

Answer 1

Correct answer is (a) Scale-factor error

Easy explanation: We note that practical A/D converters scale-factor (or gain) error (the difference between the values at which the first transition and the last transition occur is not equal to FS — 2LSB).