Rainbow-electronics ATmega64L Manuale Utente Scaricare il pdf (Pagina 207)

100

101

207

ATmega16(L)

2466B–09/01

Figure 109. 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 110. 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

REF

Input voltage

Ideal ADC

Actual ADC

INL

Output code

0x3FF

0x000

REF

Input voltage

DNL

1 LSB

1 2 ... 202 203 204 205 206 207 208 209 210 211 212 ... 297 298

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