參數資料
型號: FR65E
廠商: Fujitsu Limited
英文描述: 32-Bit Microcontroller
中文描述: 32位微控制器
文件頁數: 81/87頁
文件大小: 369K
代理商: FR65E
MB91307B
81
Definition of A/D Converter Terms
Resolution
Indicates the ability of the A/D converter to discriminate analog variation
Linear error
Expresses the deviation between actual conversion characteristics and a straight line connecting the device’s
zero transition point (00 0000 0000
←→
00 0000 0001) and full scale transition point (11 1111 1110
←→
11
1111 1111)
Differential linear error
Expresses the deviation of the logical value of input voltage required to create a variation of 1 LSB in output
code.
3FF
3FE
3FD
004
003
002
001
AVRL
AVRH
{1 LSB
×
(N
1)
+
V
TO
}
V
(measured
value)
V
FST
(measured
value)
V
TO
N
1
AVRL
AVRH
N
2
N
2
N
1
V
NT
(measured value)
V
(N
1)T
(measured
value)
[Linear Error]
[Differential linear error]
D
D
Actual variation
Actual variation
Theoretical values
(measured value)
Analog input
Analog input
Theoretical
Actual variation
Actual variation
Linear error in digital output N
=
V
NT
{1 LSB
×
(N
1)
+
V
OT
}
1 LSB
[LSB]
Differential linear error in digital output N
=
V (
N
+
1
)
T
V
NT
1 LSB
1
1 LSB
=
V
FST
V
OT
1022
[V]
1 LSB”
=
AVRH
AVRL
1024
[V]
V
OT
: Voltage at which the digital output transitions from (000)
H
to (001)
H
.
V
FST
: Voltage at which the digital output transitions from (3FE)
H
to (3FF)
H
.
V
NT
: Voltage at which the digital output transitions from (N-1) to N.
[LSB]
(theoretical value)
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