參數(shù)資料
型號(hào)： MB91354APMT
元件分類： 微控制器/微處理器
英文描述： 32-BIT, MROM, 50 MHz, RISC MICROCONTROLLER, PQFP176
封裝： 0.50 MM PITCH, LEAD FREE, PLASTIC, LQFP-176
文件頁數(shù)： 27/140頁
文件大小： 3803K
代理商： MB91354APMT
MB91350A Series
122
DS07-16503-5E
Definition of A/D Converter Terms
Resolution
Analog variation that is recognized by an A/D converter.
Linearity error
The difference between the line connecting the zero transition point ( "00 0000 0000"
←→"00 0000 0001" ) and
the full-scale transition point ( "11 1111 1110"
←→ "11 1111 1111" ) and the actual conversion characteristics.
Differential linear error
Deviation from the ideal value of the input voltage that is required to change the output code by 1 LSB.
VNT : The voltage at which the digital output transitions from (N
1)H to NH
Linear error in digital output N
=
VNT
{1 LSB’ × (N 1) + VOT}
1 LSB’
[LSB]
Differential linear error in digital output N
= V (N + 1) T VNT
1 LSB’
1 [LSB]
1 LSB
=
VFST
VOT
1022
[V]
VFST : The voltage at which the digital output transitions from (3FE)H to (3FF)H
3FFH
3FEH
3FDH
004H
003H
002H
001H
AVSS
AVRH
{1 LSB' (N
1) + VOT}
(N
1)H
AVSS
AVRH
(N
2)H
NH
(N
+ 1)H
Linearity error
Differential linear error
Dig
it
a
lout
pu
t
Dig
it
a
lout
pu
t
Actual conversion
characteristic
VFST
(measure-
ment value)
VNT
(measurement value)
Actual conversion
characteristic
Ideal characteristics
VOT (measurement value)
Analog input
Ideal characteristics
Actual conversion
characteristic
V(N+1)T
(measurement
value)
VNT
(measurement value)
Actual conversion
characteristic
VOT : The voltage at which the digital output transitions from (000)H to (001)H
N
: A/D converter digital output value
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