參數資料
型號: AD8210WYRZ-R7
廠商: Analog Devices Inc
文件頁數: 13/16頁
文件大?。?/td> 322K
描述: IC CURRENT MONITOR 0.5% 8SOIC
設計資源: High Voltage, High Precision Current Sensing with Output Level Shifting Using AD8210 and AD8274 (CN0116)
標準包裝: 1,000
功能: 電流監(jiān)控器
檢測方法: 高/低端
精確度: ±0.5%
輸入電壓: -2 V ~ 65 V
電流 - 輸出: 5mA
工作溫度: -40°C ~ 125°C
安裝類型: 表面貼裝
封裝/外殼: 8-SOIC(0.154",3.90mm 寬)
供應商設備封裝: 8-SO
包裝: 帶卷 (TR)
Data Sheet
AD8210
 
Rev. D | Page 13 of 16
INPUT FILTERING
In typical applications, such as motor and solenoid current
sensing, filtering at the input of the AD8210 can be beneficial
in reducing differential noise, as well as transients and current
ripples flowing through the input shunt resistor. An input low-
pass filter can be implemented as shown in Figure 32.
The 3 dB frequency for this filter can be calculated by
FILTER
FILTER
C
R
?/DIV>
?/DIV>
?/DIV>
=
2
?/DIV>
2
1
dB
3
_
 
(1)
 
Adding outside components, such as R
FILTER
 and C
FILTER
,
introduces additional errors to the system. To minimize these
errors as much as possible, it is recommended that R
FILTER
 be
10 & or lower. By adding the R
FILTER
 in series with the 2 k&
internal input resistors of the AD8210, a gain error is
introduced. This can be calculated by
?/DIV>
?/DIV>
?/DIV>
?/DIV>
?/DIV>
?/DIV>
?/DIV>
?/DIV>

?/DIV>

=
FILTER
R
Error
ain
k?/DIV>
2
k?/DIV>
2
100
100
(%)
    
(2)
 
 
AD8210
OUTPUT
G = +20
R
SHUNT
< R
FILTER
C
FILTER
FILTER
d 10&
R
FILTER
d 10&
+IN
IN
V
S
V
REF
1
V
REF
2
GND
V
REF
0.1礔
0V d V
REF
d V
S
 
Figure 32. Input Low-Pass Filtering
 
 
 
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