Rainbow-electronics Atmega169L Manuel d'utilisateur télécharger pdf (Page 202)

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ATmega169V/L

2514A–AVR–08/02

Figure 93. 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 94. 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

±0.5LSB.

• 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 ... 197 198 199 200 201 202 203 204 205 206 207 ... 316 317

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Rainbow-electronics Atmega169L Manuel d'utilisateur Page 202

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