參數(shù)資料
型號： MB90548PFF
廠商： FUJITSU LTD
元件分類： 微控制器/微處理器
英文描述： 16-BIT, MROM, 16 MHz, MICROCONTROLLER, PQFP100
封裝： PLASTIC, LQFP-100
文件頁數(shù)： 44/73頁
文件大小： 1663K
代理商： MB90548PFF
MB90540/545 Series
49
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
conversion 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
AVR
AVR +
Actual conversion
value
D
ig
it
a
l
o
u
tp
u
t
VNT
(mesured value)
0.5 LSB
Actual conversion
characteristics
Theoretical
characteristics
0.5 LSB
{1 LSB
× (N – 1) + 0.5 LSB}
[V]
AVR + – AVR
1024
1 LSB = (Theoretical value)
VOT (Theoretical value) = AVR + 0.5 LSB[V]
VFST (Theoretical value) = AVR
+ – 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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