参数资料
型号: MB90F897PMT
元件分类: 微控制器/微处理器
英文描述: MICROCONTROLLER, PQFP48
封装: 7 X 7 MM, 1.70 MM HEIGHT, 0.50 MM PITCH, PLASTIC, LQFP-48
文件页数: 68/84页
文件大小: 1773K
代理商: MB90F897PMT
MB90895 Series
70
DS07-13731-4E
6.
Definition of A/D Converter Terms
(Continued)
Resolution
: Analog variation that is recognized by an A/D converter.
Linear 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.
Total error
: Difference between an actual value and an ideal value. A total error includes zero transition
error, full-scale transition error, and linear error.
3FF
3FE
3FD
004
003
002
001
AVss
AVR
1.5 LSB
0.5 LSB
{1 LSB
× (N 1) + 0.5 LSB}
VNT
Total error
Total error of digital output “N”
=
VNT
{1 LSB × (N 1) + 0.5 LSB}
[LSB]
1 LSB
= (Ideal value)
AVR
AVSS
[V]
1024
VOT (Ideal value)
= AVSS + 0.5 LSB [V]
VFST (Ideal value)
= AVR 1.5 LSB [V]
VNT : A voltage at which digital output transits from (N-1) to N.
Dig
it
a
lout
pu
t
Actual conversion
characteristics
(Actually-measured value)
Actual conversion
characteristics
Analog input
Ideal characteristics
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