- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄377879 > MB2146-301A (Fujitsu Limited) 8-bit Proprietary Microcontrollers PDF資料下載
參數(shù)資料
| 型號(hào)： | MB2146-301A |
| 廠商： | Fujitsu Limited |
| 英文描述： | 8-bit Proprietary Microcontrollers |
| 中文描述： | 8位微控制器專有 |
| 文件頁數(shù)： | 61/69頁 |
| 文件大?。?/td> | 832K |
| 代理商： | MB2146-301A |
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頁當(dāng)前第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
MB95100B Series
61
(2) Notes on Using A/D Converter
About the external impedance of 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 register value and operating
frequency or decrease the external impedance so that the sampling time is longer than the minimum value.
Also, if the sampling time cannot be sufficient, connect a capacitor of about 0.1
μ
F to the analog input pin.
About errors
As |AVR
AV
SS
| becomes smaller, values of relative errors grow larger.
R
C
Analog input pin
Note : The values are reference values.
Analog input equivalent circuit
R
C
2.7 V
≤
AV
CC
≤
3.6 V
1.8 V
≤
AV
CC
< 2.7 V
1.7 k
(Max)
84 k
(Max)
14.5 pF (Max)
25.2 pF (Max)
Comparator
During sampling : ON
0
5
10
15
20
25
30
35
40
0
10
20
30
40
50
60
70
80
90
100
0
1
2
3
4
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
)
Minimum sampling time [
μ
s]
E
]
Minimum sampling time [
μ
s]
E
]
AV
CC
≥
1.8 V
AV
CC
≥
2.7 V
AV
CC
≥
2.7 V
The relationship between external impedance and minimum sampling time
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| MB2146-302A | 8-bit Proprietary Microcontrollers |
| MB2146-303A | 8-bit Microcontrollers |
| MB2146-303 | 8-bit Proprietary Microcontrollers |
| MB3514 | RGB Encoder(RGB編碼器) |
| MB3778 | RADIATION HARDENED HIGH EFFICIENCY, 5 AMP SWITCHING REGULATORS |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MB2146-302A | 制造商:FUJITSU 制造商全稱:Fujitsu Component Limited. 功能描述:8-bit Proprietary Microcontrollers |
| MB2146-303 | 制造商:FUJITSU 制造商全稱:Fujitsu Component Limited. 功能描述:8-bit Proprietary Microcontrollers |
| MB2146-303A | 制造商:FUJITSU 制造商全稱:Fujitsu Component Limited. 功能描述:8-bit Microcontrollers |
| MB2146-303A-E | 制造商:FUJITSU 功能描述:KIT MCU BOARD 8FX FAMILY 制造商:FUJITSU 功能描述:F2MC-8FX, MB95FV100D-103, EVAL BOARD; Silicon Manufacturer:Fujitsu; Silicon Family Name:F2MC-8FX; Kit Contents:Board; Features:LVD2 Detection Voltage Selector Jumper Plug, BGM Adapter Connector ;RoHS Compliant: NA |
| MB2146-401 | 制造商:FUJITSU 功能描述:KIT EVALUATION BOARD 8FX FAMILY |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。