參數(shù)資料
型號(hào): MB90F489BPFV
元件分類: 微控制器/微處理器
英文描述: 16-BIT, FLASH, 25 MHz, MICROCONTROLLER, PQFP100
封裝: 14 X 14 MM, 1.70 MM HEIGHT, 0.50 MM PITCH, PLASTIC, LQFP-100
文件頁數(shù): 16/124頁
文件大?。?/td> 1547K
代理商: MB90F489BPFV
MB90480B/485B Series
112
A/D Converter Glossary
(Continued)
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.
3FFH
3FEH
3FDH
004H
003H
002H
001H
AVRL
AVRH
VNT
0.5 LSB
{1 LSB
× (N 1) + 0.5 LSB}
Actual conversion
value
(Measured value)
Actual conversion
value
Theoretical
characteristics
Digit
a
lo
u
tp
u
t
Analog input
Total error
Total error for digital output N
=
VNT
{1 LSB × (N 1) + 0.5 LSB}
1 LSB
[LSB]
1 LSB (Theoretical value)
=
AVR
AVss
1024
[V]
N
: A/D converter digital output value
VOT (Theoretical value)
= AVss + 0.5 LSB [V]
VFST (Theoretical value)
= AVR 1.5 LSB [V]
VNT : Voltage at a transition of digital output from (N-1) H, NH
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