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M30245 Group
• Differential non-linearity error
Differential non-linearity error refers to the difference between 1-LSB width based on the theoretical A/
D conversion characteristics (an analog input width that can meet the expectation of outputting an
equal code) and an actually measured 1-LSB width (analog input voltage width that outputs an equal
code). If 10-bit resolution is used and if V
error = ± 1LSB" refers to the fact that 1-LSB width actually measured falls on a range from 0 mV to 10
mV though 1-LSB width based on the theoretical A/D conversion characteristics is 5 mV.
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Figure 2.9.22. Differential non-linearity error (10-bit resolution)
Rev.2.00 Oct 16, 2006
REJ09B0340-0200
Output code
(result of A/D conversion)
009
16
1-LSB width for theoretical A/D
008
16
conversion characteristic
007
16
006
16
005
16
004
16
003
16
002
16
001
16
000
16
0
5
10
page 236 of 354
(reference voltage) = 5.12 V, "differential non-linearity
REF
Differential non-linear error
15
20
25
30
35
Analog input voltage (mV)
2. A/D Converter
40
45
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