參數(shù)資料
型號： M37274EFSP
元件分類： 微控制器/微處理器
英文描述： 8-BIT, OTPROM, 8.1 MHz, MICROCONTROLLER, PDIP52
封裝： 0.600 INCH, 1.78 MM PITCH, PLASTIC, SDIP-52
文件頁數(shù)： 80/148頁
文件大?。?/td> 1946K
代理商： M37274EFSP
1
36
SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER with CLOSED CAPTION DECODER
and ON-SCREEN DISPLAY CONTROLLER
M37274EFSP
PRELIMINARY
Notice:
This
is not
a final
specification.
Some
paramentic
limits
are
subject
to change.
MITSUBISHI MICROCOMPUTERS
[LSB]
(8) Definition of A-D Conversion Accuracy
The definition of A-D conversion accuracy is described below.
Relative accuracy
Zero transition error (V0T)
The deviation of the input voltage at which A-D conversion output
data changes from “0” to “1,” from the corresponding ideal A-D
conversion characteristics between 0 and VREF.
Non-linearity error
The deviation of the actual A-D conversion characteristics, from the
ideal A-D conversion characteristics between V0 and V254.
(V0 – 1/2 ! VREF/256)
1LSB
V0T =
(VREF
3/2
VREF/256)
V254
1LSB
VFST
Non-linearity error
[ LSB]
Differential non-linearity error
The deviation of the input voltage required to change output data
by “1,” from the corresponding ideal A-D conversion characteris-
tics between 0 and VREF.
Absolute accuracy
Absolute accuracy error
The deviation of the actual A-D conversion characteristics, from the
ideal A-D conversion characteristics between 0 and VREF.
Vn
(1LSB
n
V0)
1LSB
[ LSB]
Differential non-linearity error =
(Vn+1 –
=
–
!
+
–
Vn)
1LSB
Absolute accuracy error
1LSBA with respect to absolute accuracy
1LSB with respect to relative accuracy
Note: The analog input voltage “Vn” at which A-D conversion output
data changes from “n” to “n + 1” (n ; 0 to 254) is as follows
(refer to Figure 30) :
V254
V0
254
VREF
256
V
Fig. 30. Definition of A-D Conversion Accuracy
Full-scale transition error (VFST)
The deviation of the input voltage at which A-D conversion output
data changes from “255” to “254,” from the corresponding ideal A-
D conversion characteristics between 0 and VREF.
Vn
1LSBA
(n
1/2)
1LSBA
Output
data
0
Analog input
voltage (V
V0
Vn Vn+1
V254
VREF
n
n+1
254
255
Zero transition error (V 0T)
Differential non-
linearity error
LSBA
Actual A-D
conversion
characteristics
1
2
3
2
V1
1LSB A
Ideal A-D conversion characteristics
between V0 and V254
LSBA
1LSB
Absolute accuracy
Non-linearity error
Full-scale transition error
(VFST)
1LSB
2
––
!
=
–
+
!
=
–
=
]
[
V ]
[
)
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相關代理商/技術參數(shù)
參數(shù)描述
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