Lesson 4 – Executing the ADC Linearity Test
345
ADC Offset Error
ADC offset error measures the analog input voltage range that
leads to output code zero.
ADC Offset Error
ADC Gain Error
ADC gain error is the deviation of the actual difference between
first and last code transitions and the ideal difference between
first and last code transitions.
ADC Gain Error
111
110
101
011
010
100
000
001
Actual code center line
Ideal code center line
Offset
Error
1/4 FS 1/2 FS 3/4 FS FS
Analog Input
Binary Output Code