參數(shù)資料
型號(hào)： MB90F867ESPF
元件分類： 微控制器/微處理器
英文描述： 16-BIT, FLASH, 24 MHz, MICROCONTROLLER, PQFP100
封裝： 14 X 20 MM, 3.35 MM HEIGHT, 0.65 MM PITCH, PLASTIC, QFP-100
文件頁(yè)數(shù)： 53/68頁(yè)
文件大小： 1040K
代理商： MB90F867ESPF
MB90860E Series
57
6.
Definition of A/D Converter Terms
(Continued)
Resolution
: Analog variation that is recognized by an A/D converter.
Non linearity
error
: Deviation of the actual conversion characteristics from a line that connects the zero transition
point ( “00 0000 0000”
← → “00 0000 0001” ) to the full-scale transition point ( “11 1111 1110”
← → “11 1111 1111” ) .
Differential
linearity error
: Deviation from the ideal value of the input voltage required to change the output code by
LSB.
Total error
: Difference between the actual value and the ideal value. The total error includes zero transi-
tion error, full-scale transition error, and linear error.
3FFH
3FEH
3FDH
004H
003H
002H
001H
AVRL
AVRH
VNT
1.5 LSB
0.5 LSB
{1 LSB
× (N 1) + 0.5 LSB}
Actual conversion
characteristics
(Actually-measured value)
Actual conversion
characteristics
Ideal characteristics
Digital
output
Analog input
Total error
Total error of digital output “N”
=
VNT
{1 LSB × (N 1) + 0.5 LSB}
1 LSB
[LSB]
1 LSB (Ideal value)
=
AVRH
AVRL
1024
[V]
VOT (Ideal value)
= AVRL + 0.5 LSB [V]
VFST (Ideal value)
= AVRH 1.5 LSB [V]
VNT : The voltage at which the digital output changes from (N
1) H to NH.
N : A/D converter digital output value
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