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AD8231-EVALZ
VS
C1 +
10μF
SDN
A2
A1
A0
CS
VS
VS
1
12
1
12
AD8231
AD8231
–INA
+INA
R1
0 ?
R2
0 ?
C3
SPARE
C4
SPARE
C5
SPARE
2
3
4
LOGIC
IN-AMP
OP
AMP
11
10
9
R8
0 ?
C2
0.1μF
OUTA
REF
–DIFFI
+DIFFI
R3
0 ?
R4
0 ?
C7
SPARE
C8
SPARE
C9
SPARE
2
3
4
LOGIC
IN-AMP
OP
AMP
11
10
9
C6
0.1μF
R5
10k ?
R6
10k ?
+DIFFO
–DIFFO
RC11
10k ?
C10
SPARE
VS
R7
10k ?
R13
0 ?
R12
0 ?
C12
SPARE
R10
0 ?
R9
SPARE
Figure 3. AD8231-EVALZ Schematic
Additional 0603 component pads have been placed and routed to
allow several other types of op amp configurations. Figure 4 shows
how to put the op amp in either an inverting or noninverting gain
configuration. To make a noninverting configuration, drive the
The op amp can also be configured for filtering. Figure 5 shows
how to make a Sallen-Key filter.
C12
OP_IN pin with the incoming signal and the OP_NEG pin with a
bias voltage. For an inverting configuration, drive the OP_NEG pin
with the incoming signal and the OP_IN pin with a bias voltage.
OP_IN
R10
R13
RC11
R12
OP_OUT
OP_IN
OP_OUT
R9
OP_NEG
R9
OP_NEG
R12
Figure 5. Sallen-Key Filter
ORDERING GUIDE
Figure 4. Inverting or Noninverting Configuration
Model
1
Z = RoHS Compliant Part.
Description
Evaluation Board
ESD CAUTION
?2008 Analog Devices, Inc. All rights reserved. Trademarks and
registered trademarks are the property of their respective owners.
EB07016-0-11/08(0)
Rev. 0 | Page 2 of 2
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