参数资料
型号: MB90522BPFV
元件分类: 微控制器/微处理器
英文描述: 16-BIT, MROM, 16 MHz, MICROCONTROLLER, PQFP120
封装: PLASTIC, QFP-120
文件页数: 90/99页
文件大小: 978K
代理商: MB90522BPFV
MB90520A/520B Series
90
6.
A/D Converter Glossary
(Continued)
Resolution
: The change in analog voltage that can be recognized by the A/D converter.
Linearity error
: The deviation between the actual conversion characteristics and the line linking the
zero transition point (“00 0000 0000B
←→ “00 0000 0001B”) and the full scale transi-
tion point (“11 1111 1110B
←→ “11 1111 1111B”) .
Differential linearity error : The variation from the ideal input voltage required to change the output code by 1 LSB.
Total error
: The total error is the difference between the actual value and the theoretical value.
This includes the zero-transition error, full-scale transition error, and linearity error.
3FFH
3FEH
3FDH
004H
003H
002H
001H
AVRL
Digital
Output
AVRH
0.5 LSB
VNT
(Measured value)
{1 LSB
× (N 1) + 0.5 LSB}
Total Error
Analog Input
Actual conversion
characteristic
Actual conversion
characteristic
Theoretical characteristic
1 LSB
= (Theoretical value)
VOT (Theoretical value)
= AVRL + 0.5 LSB [V]
VNT : Voltage at which digital output changes from (N
1) to N
AVRH
AVRL
1024*
[V]
Total error for digital output N
=
VNT
{1 LSB × (N 1) + 0.5 LSB}
1 LSB
[LSB]
VFST (Theoretical value)
= AVRH 1.5 LSB [V]
* : For 10-bit resolution, this value is 1024 (210) . For 8-bit resolution, this value is 256 (28) .
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