Rainbow-electronics ATmega128L Manuel d'utilisateur télécharger pdf (Page 230)

100

101

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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

REF

Input voltage

Ideal ADC

Actual ADC

Offset

Error

Output code

REF

Input voltage

Ideal ADC

Actual ADC

Gain

Error

1 2 ... 225 226 227 228 229 230 231 232 233 234 235 ... 330 331

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Rainbow-electronics ATmega128L Manuel d'utilisateur Page 230

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