參數(shù)資料
型號： MB90394HAPMT
元件分類： 微控制器/微處理器
英文描述： 16-BIT, MROM, 24 MHz, MICROCONTROLLER, PQFP120
封裝： PLASTIC, LQFP-120
文件頁數(shù)： 63/74頁
文件大?。?/td> 886K
代理商： MB90394HAPMT
MB90390 Series
66
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.
3FFH
3FEH
3FDH
004H
003H
002H
001H
AVSS
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
AVSS
1024
[V]
VOT (Ideal value)
= AVSS + 0.5 LSB [V]
VFST (Ideal value)
= AVRH 1.5 LSB [V]
VNT : A voltage at which digital output transitions from (N
1) to N.
N : A/D converter digital output value
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