Datasheet

Figure 25-10. Offset Error
Output Code
V
REF
Input Voltage
Ideal ADC
Actual ADC
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 25-11. Gain Error
Output Code
V
REF
Input Voltage
Ideal ADC
Actual ADC
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.
Figure 25-12. Integral Non-linearity (INL)
Output Code
V
REF
Input Voltage
Ideal ADC
Actual ADC
INL
Atmel ATmega644A [DATASHEET]
Atmel-42716C-ATmega644A_Datasheet_Complete-10/2016
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