Datasheet

10
®
INA145
FIGURE 4. Noise Filtering.
FIGURE 5. Creating Gains Less Than Unity.
FIGURE 6. Clamp Circuits.
V
O
18
6
V
IN
G = 1
Pole at
106Hz
R
G1
10kΩ
10kΩ
R
G2
1MΩ
22nF
INA145
5
2
3
1500pF
Pole at
720Hz
–
V
IN
+
V
O
1
8
6
R
G2
10kΩ
R
1
R
2
R
3
R
4
10kΩ
5.0V
or Analog-to-Digital V
S
0V ≤ V
O
≤ 5V
NOTE: (1) 1/2 OPA2342 with V
S
connected to +5V and GND.
Voltage
Reference
1N914
INA145
5
2
3
V
IN
–
V
IN
+
(1)
1N914
(1)
To Pin 8
Alternate
Soft Clamp
1N914
1N4684
(3.3V)
V
O
10kΩ
INA145
5
6
81
2
3
V
IN
–
V
IN
+
R
3
R
4
G =
G ≤ 1
R
3
+ R
4
R
3