参数资料
型号: MB90671PFV
元件分类: 微控制器/微处理器
英文描述: 16-BIT, MROM, 16 MHz, MICROCONTROLLER, PQFP80
封装: PLASTIC, LQFP-80
文件页数: 105/106页
文件大小: 1648K
代理商: MB90671PFV
MB90670/675 Series
98
6.
A/D Converter Glossary
Resolution: Analog changes that are identifiable with the A/D converter
Linearity error:The deviation of the straight line connecting the zero transition point (“00 0000 0000”
“00 0000
0001”) with the full-scale transition point (“11 1111 1110”
“11 1111 1111”) from actual con-
version characteristics
Differential linearity error:The deviation of input voltage needed to change the output code by 1 LSB from the
theoretical value
Total error:The total error is defined as a difference between the actual value and the theoretical value, which
includes zero-transition error/full-scale transition error and linearity error.
(Continued)
Total error
3FF
3FE
3FD
004
003
002
001
Analog input
AVRL
AVRH
Actual conversion
characteristics
D
ig
it
a
l
o
u
tp
u
t
VNT
(Measured value)
0.5 LSB’
Actual conversion
characteristics
Theoretical
characteristics
0.5 LSB’
{1 LSB
× (N – 1) + 0.5 LSB}
[V]
AVRH – AVRL
1024
1 LSB’ = (Theoretical value)
VOT’ (Theoretical value) = AVRL + 0.5 LSB’ [V]
VFST’ (Theoretical value) = AVRH – 1.5 LSB’ [V]
Total error for digital output N
[LSB]
VNT – {1 LSB’
× (N – 1) + 0.5 LSB’}
1 LSB’
=
VNT: Voltage at a transition of digital output from (N – 1) to N
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