Datasheet
Table Of Contents

www.ti.com
V
1
-In
V
2
+In
R
1
R
2
2
3
5
6
1
R
2
OPA333
OPA333
INA152
V
O
V =(1+2R /R
O 2 1 2 1
)(V V )-
OPA333
3V
1MW 60kW
100kW
1MW
NTC
Thermistor
R
1
100kW
1/2
OPA2333
RA
Inverted
V
CM
+V
S
INA321
(1)
+VS
V
OUT
+V
S
+V
S
+V
S
OPA333
+V
S
1/2V
S
dc
3
2
1
4
5
6
G =1kV/V
TOT
G =5
INA
G =200
OPA
f =150Hz
LPF
f =0.5Hz
HPF
(providesacsignalcoupling)
V =+2.7Vto+5.5V
S
BW=0.5Hzto150Hz
f =0.5Hz
O
Wilson
V
CENTRAL
(RA+LA+LL)/3
7
ac
1/2V
S
R
2
100kW
1/2
OPA2333
LL
+V
S
R
3
100kW
1/2
OPA2333
LA
R
4
100kW
R
9
20kW
R
6
100kW
RL
+V
S
+V
S
1/2
OPA2333
1/2
OPA2333
1/2
OPA2333
C
4
1.06nF
C
3
1 Fm
R
14
1MW
R
12
5kW
R
13
318kW
R
7
100kW
R
8
100kW
R
10
1MW
C
2
0.64 Fm
R
11
1MW
C
1
47pF
R
5
390kW
NOTE:(1)Otherinstrumentationamplifierscanbeused,
suchastheINA326,whichhaslowernoise,
buthigherquiescentcurrent.
OPA333
OPA2333
SBOS351C – MARCH 2006 – REVISED MAY 2007
Figure 24. Thermistor Measurement Figure 25. Precision Instrumentation Amplifier
Figure 26. Single-Supply, Very Low Power, ECG Circuit
11
Submit Documentation Feedback