Datasheet

REV. A–14–
AD8225
Evaluation Board
Figure 13 is a schematic of an evaluation board available for the
AD8225. The board is shipped with an AD8225 already installed
and tested. The user need only connect power and an input to
conduct measurements. The supply may be configured for dual
A1
2
3
R3
100k*
R5
100k*
W3
W4
C1
0.1F
C3
0.1F
R4
100
R2
100
+IN
GND
–IN
+V
S
C4
0.1F
OUTPUT
R8
5
4
1
C2
0.1F
W12
EXT_REF
W13
W11
W14
–V
S
NOTES
REMOVE W3 AND W4 FOR AC COUPLING
*INSTALL FOR AC COUPLING
+V
S
GND
–V
S
C12
10F, 25V
C11
10F, 25V
W7
W6
+V
AUX
–V
AUX
C9
0.1F
4
6
7
3
2
A1
C10
0.1F
–V
AUX
OFFSET
ADJ
R1
10k
+V
AUX
R9
5.9k, 1%
R10
5.9k, 1%
C7
0.1F
C8
0.1F
CS2
J500
240A
CS1
J500
240A
–V
AUX
AD707JN
USER-SUPPLIED
7
6
Figure 13. Evaluation Board Schematic
or single supplies, and the input may be dc- or ac-coupled. A
circuit is provided on the board so that the user can zero the
output offset. If desired, a reference may be applied from an
external voltage source.