- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄377929 > MB90F823A (Fujitsu Limited) 16-bit Proprietary Microcontroller PDF資料下載
參數(shù)資料
| 型號： | MB90F823A |
| 廠商： | Fujitsu Limited |
| 英文描述： | 16-bit Proprietary Microcontroller |
| 中文描述： | 16位微控制器專有 |
| 文件頁數(shù)： | 94/100頁 |
| 文件大?。?/td> | 992K |
| 代理商： | MB90F823A |
第1頁第2頁第3頁第4頁第5頁第6頁第7頁第8頁第9頁第10頁第11頁第12頁第13頁第14頁第15頁第16頁第17頁第18頁第19頁第20頁第21頁第22頁第23頁第24頁第25頁第26頁第27頁第28頁第29頁第30頁第31頁第32頁第33頁第34頁第35頁第36頁第37頁第38頁第39頁第40頁第41頁第42頁第43頁第44頁第45頁第46頁第47頁第48頁第49頁第50頁第51頁第52頁第53頁第54頁第55頁第56頁第57頁第58頁第59頁第60頁第61頁第62頁第63頁第64頁第65頁第66頁第67頁第68頁第69頁第70頁第71頁第72頁第73頁第74頁第75頁第76頁第77頁第78頁第79頁第80頁第81頁第82頁第83頁第84頁第85頁第86頁第87頁第88頁第89頁第90頁第91頁第92頁第93頁當前第94頁第95頁第96頁第97頁第98頁第99頁第100頁
MB90820 Series
94
7.
About the external impedance of the analog input and its sampling time
A/D converter with sample and hold circuit. If the external impedance is too high to keep sufficient sampling
time, the analog voltage charged to the internal sample and hold capacitor is insufficient, adversely affecting
A/D conversion precision. Therefore, to satisfy the A/D conversion precision standard, consider the relationship
between the external impedance and minimum sampling time and either adjust the resistor value and operating
frequency or decrease the external impedance so that the sampling time is longer than the minimum value.
And if the sampling time cannot be sufficient, connect a capacitor of about 0.1 mF to the analog input pin.
Notes on Using A/D Converter
About the error
The accuracy gets worse as
|
AVR
AV
SS
|
becomes smaller.
R
C
R
C
MB90822/823
MB90F822A/F823A
2.0 k
(Max)
2.0 k
(Max)
14.4 pF (Max)
16.0 pF (Max)
Analog input circuit model
Analog input
During sampling : ON
Comparator
Note : The values are reference values.
MB90F822A/F823A
MB90822/
823
0
5
10
15
20
25
30
35
0
10
20
30
40
50
60
70
80
90
100
MB90F822A/F823A
MB90822/
823
0
1
2
3
4
5
6
7
8
0
2
4
6
8
10
12
14
16
18
20
(External impedance
=
0 k
to 100 k
)
(External impedance
=
0 k
to 20 k
)
E
]
Minimum sampling time [
μ
s]
E
]
Minimum sampling time [
μ
s]
The relationship between the external impedance and minimum sampling time
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| MB90F823APF | 16-bit Proprietary Microcontroller |
| MB90F823APFM | 16-bit Proprietary Microcontroller |
| MB90F884SPMC | 16-Bit Proprietary Microcontroller |
| MB90880 | 16-Bit Proprietary Microcontroller |
| MB90882 | 16-Bit Proprietary Microcontroller |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MB90F867APFR-G-SNE1 | 制造商:FUJITSU 功能描述: |
| MB90F867ASPF-GE1 | 制造商:FUJITSU 功能描述:IC 16BIT MCU I2C SMD QFP100 |
| MB90F867ASPFR-GE1 | 制造商:FUJITSU 功能描述: |
| MB90F867ASPFR-G-SPE1 | 制造商:FUJITSU 功能描述: |
| MB90F897PMCR-G-TE1 | 制造商:FUJITSU 功能描述: |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。