Data Sheet
AD8213
 
Rev. C | Page 13 of 16
BIDIRECTIONAL CURRENT SENSING
The AD8213 can also be configured to sense current in both
directions at the inputs. This configuration is useful in charge/
discharge applications. A typical connection diagram is shown
in Figure 31. In this mode Channel 1 monitors ILOAD and
Channel 2 monitors ICHARGE.
1
2
3
4
IN2
+IN2
GND
OUT2
CF2
5
10
9
8
7
IN1
+IN1
V+
OUT1
CF1   6
AD8213
CF2
CF1
5V
LOAD
CHARGER
BATTERY
R
SHUNT
I
LOAD
I
CHARGE
 
Figure 31. Bidirectional Current Sensing
For applications requiring a bidirectional current measurement,
an optimal solution could be to use a single channel device,
which offers the same functionality as the previous circuit. The
AD8210 is a single channel current sensor featuring bidirec-
tional capability. The typical connection diagram for the
AD8210 in bidirectional applications is shown in Figure 32.
 
LOAD
CHARGER
BATTERY
R
SHUNT
0.1礔
AD8210
OUTPUT
G = +20
+IN
IN
V+
V
REF
1
V
REF
2
GND
I
LOAD
I
CHARGE
 
Figure 32. AD8210 in Bidirectional Applications
 
 
 
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