參數(shù)資料
型號(hào): MB90F378
廠商: Fujitsu Limited
英文描述: 16-bit Proprietary Microcontroller
中文描述: 16位微控制器專(zhuān)有
文件頁(yè)數(shù): 57/65頁(yè)
文件大小: 323K
代理商: MB90F378
MB90378 Series
57
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)
3FF
H
3FE
H
3FD
H
004
H
003
H
002
H
001
H
AVRL
AVRH
V
NT
(Measured value)
0.5 LSB
0.5 LSB
{1 LSB
×
(N
1)
+
0.5 LSB}
Actual conversion
value
Actual conversion
value
Theoretical
characteristics
Analog input
Total error for digital output N
=
V
NT
{1 LSB
×
(N
1)
+
0.5 LSB}
1 LSB
AVR
AVss
1024
[LSB]
1 LSB (Theoretical value)
=
[V]
V
OT
(Theoretical value)
=
AVss
+
0.5 LSB [V]
V
FST
(Theoretical value)
=
AVR
1.5 LSB [V]
V
NT
: Voltage at a transition of digital output from (N
1) to N
Total error
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