参数资料
型号: MB89865PF
元件分类: 微控制器/微处理器
英文描述: 8-BIT, MROM, 10 MHz, MICROCONTROLLER, PQFP80
封装: PLASTIC, QFP-80
文件页数: 27/44页
文件大小: 1212K
代理商: MB89865PF
MB89860 Series
DS07-12504-6E
33
(1) A/D Glossary
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 1111”
“11 1111 1110”) 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 indicates the difference between the actual value and theoretical value. This error is caused by
the zero transition error, full-scale transition error, linearity error, quantization, and noise.
(Continued)
Actual conversion
value
3FF
3FE
3FD
004
003
002
001
VOT
0.5 LSB
AVSS
1 LSB
1.5 LSB
VFST
AVR
3FF
3FE
3FD
004
003
002
001
Theoretical value
AVSS
VNT
AVR
(1 LSB
× N + 0.5 LSB)
1 LSB =
1022
(V)
VNT – (1 LSB
× N + 0.5 LSB)
1 LSB
Digital
output
Digital
output
Total error of digital output “N” =
VFST – VOT
Theoretical I/O value
Analog input
Total error
Analog input
Actual conversion
value
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