ATMEGA64L-8MI 查看數據表（PDF） - Atmel Corporation

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ATMEGA64L-8MI

8-bit AVR® Microcontroller with 64K Bytes In-System Programmable Flash

Atmel Corporation 

ATmega64(L)

• 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 119. Integral Non-linearity (INL)

Output Code

Ideal ADC

Actual ADC

VREF Input Voltage

• 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 120. Differential Non-linearity (DNL)

Output Code

0x3FF

2490G–AVR–03/04

1 LSB

0x000

0

DNL

VREF Input Voltage

• 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.

241

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