Datasheet

ATmega48/88/168 Automotive [DATASHEET]
7530K–AVR–07/14
216
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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 21-12. Integral Non-linearity (INL)
● Differential non-linearity (DNL): The maximum deviation of the actual code width (the interval between two adjacent
transitions) from the ideal code width (1 LSB). Ideal value: 0 LSB.
Figure 21-13. Differential Non-linearity (DNL)
● Quantization error: Due to the quantization of the input voltage into a finite number of codes, a range of input voltages
(1 LSB wide) will code to the same value. Always ±0.5 LSB.
● Absolute accuracy: The maximum deviation of an actual (unadjusted) transition compared to an ideal transition for
any code. This is the compound effect of offset, gain error, differential error, non-linearity, and quantization error. Ideal
value: ±0.5 LSB.
Output Code
Ideal ADC
INL
Actual ADC
V
REF
Input Voltage
Output Code
0x3FF
0x000
0
1 LSB
DNL
V
REF
Input Voltage