Rainbow Electronics ATmega128L - Manual (Page 230)

230
ATmega128(L)
2467B–09/01
Figure 114. Offset Error
• Gain error: After adjusting for offset, the gain error is found as the deviation of the
last transition (0x3FE to 0x3FF) compared to the ideal transition (at 1.5 LSB below
maximum). Ideal value: 0 LSB
Figure 115. Gain Error
• Integral Non-Linearity (INL): After adjusting for offset and gain error, the INL is the
maximum deviation of an actual transition compared to an ideal transition for any
code. Ideal value: 0 LSB.
Output code
V
REF
Input voltage
Ideal ADC
Actual ADC
Offset
Error
Output code
V
REF
Input voltage
Ideal ADC
Actual ADC
Gain
Error