m37905 Renesas Electronics Corporation., m37905 Datasheet - Page 331

• Manufacturer Part Number: m37905
• Description: Mitsubishi 16-bit Single-chip Microcomputer 7700 Family / 7900 Series
• Manufacturer: Renesas Electronics Corporation.

12.4 Absolute accuracy and Differential non-linearity error
Fig. 12.4.2 Differential non-linearity error (10-bit resolution mode)
A-D CONVERTER
12-20
12.4.2 Differential non-linearity error
The differential non-linearity error indicates the difference between the 1 LSB step width (the ideal analog
input voltage width while the same output code is expected to output) of an A-D converter with ideal
characteristics and the actual measured step width (the actual analog input voltage width while the same
output code is output). (See Figure 12.4.2 for more details.) For example, in the case of the 10-bit
resolution mode and V
but if the differential non-linearity error is ±1 LSB, the actual measured 1 LSB width is in the range from
0 to 10 mV.
(A-D conversion result)
009
008
007
006
005
004
003
002
001
000
Output code
16
16
16
16
16
16
16
16
16
16
REF
0
= 5.12 V, the 1 LSB width of an A-D converter with ideal characteristics is 5 mV;
A-D conversion characteristics
5
1 LSB width with ideal
10
7905 Group User’s Manual Rev.1.0
15
Analog input voltage (mV)
Differential non-linearity error
20
25
30
35
40
45