参数资料
型号: MB90803SPF-G
元件分类: 微控制器/微处理器
英文描述: 16-BIT, MROM, 25 MHz, MICROCONTROLLER, PQFP100
封装: 14 X 20 MM, 3.35 MM HEIGHT, 0.65 MM PITCH, PLASTIC, QFP-100
文件页数: 82/92页
文件大小: 2250K
代理商: MB90803SPF-G
MB90800 Series
DS07-13733-5E
83
6.
Definition of A/D Converter Terms
Resolution
Analog variation that is recognized by an A/D converter.
The 10-bit can resolve analog voltage into 210
= 1024.
Total error
This shows the difference between the actual voltage and the ideal value and means a total of error because of
offset error, gain error, non-linearity error and noise.
Linearity error
Deviation between a line across zero-transition line (00 0000 0000
00 0000 0001) and full-scale transition line
(11 1111 1110
11 1111 1111) and actual conversion characteristics.
Differential linear error
Deviation of input voltage, which is required for changing output code by 1 LSB, from an ideal value.
(Continued)
3FFH
3FEH
3FDH
004H
003H
002H
001H
AVSS
(AVRL)
AVCC
(AVRH)
0.5 LSB
1.5 LSB
{1 LSB
× (N 1) + 0.5 LSB}
Total error
Digital
output
Actual conversion
characteristic
VNT
(measurement value)
Analog input
Total error of digital output N
=
VNT
{1 LSB × (N 1) + 0.5 LSB}
1 LSB
VOT(Ideal value)
= AVSS + 0.5 LSB [V]
VFST(Ideal value)
= AVCC 1.5 LSB [V]
1LSB(Ideal value)
=
AVCC
AVSS
1024
[V]
Actual conversion
characteristics
Ideal characteristics
[LSB]
VNT: A voltage at which digital output transitions from (N
1)H to NH.
N : A/D converter digital output value
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