Datasheet

Two Operational Amplifier Instrumentation Amplifier
4-9
Example Circuits
Figure 4–5. Two Operational Amplifier Instrumentation Amplifier with Single Supply Using
Area 200
C204 C205
C212 C213
V2+
V2–
V2+
GND2
V1–
Power Supply Bypass
+
–
10
1
4
3
2
V2+
V2–
R206
C215
R219
C206
R221
R210
R220
R209
R208
R218
C214
C207
A2OUT
1/2 Dual Op Amp
A201–
A202–
A203+
A204+
+
–
R204
C209
R213
C202
R203
R202
R201
R211
R214
C210
C201
B2OUT
1/2 Dual Op Amp
B201–
B202–
B204+
B203+
R216
C
R
A
U202
R217
Voltage Reference
U201a
U201b
V2+
VREF2 = 1.24 V
R215
9
7
8
+
–
V
in
Jumper
Jumper
R212
TLV431ACDBV5
Jumper
0.1 µF 10 µF
JumperJumper
V
OUT
= V
in
(1+ + )+ V
REF2
2R206
R210
R206
R221
Jumper A201 – to B2OUT
R206 = R202
R221 = R204
R211 = R202 II R204
or Short if Using Low Input
Bias Op Amp
Jumper VREF2 to B202–
Jumper
A202– to B201–
R208 = R206 II R210
or Short if Using Low Input
Bias Op Amp
2.2 kΩ
6
B2/SD
B2 FLT
R205
C203
5
A2/SD
A2 FLT
R207
C208
C211
10 µF