Datasheet

®
9
OPA128
FIGURE 8. Current-to-Voltage Converter.FIGURE 7. Sensitive Photodiode Amplifier.
V
O
= 1mV/pA
Output
OPA128
2
3
6
8
10
9
Ω
INA101HP
3
4
5
10
11
12
1
14
REF101
5
6
4 1
8
7
+15V
Biased
Current
Transducer
+5V
+5V
FIGURE 9. Biased Current-to-Voltage Converter.
OPA128
2
3
6
8
V
O
= –1V/nA
1000MΩ
18kΩ
2kΩ
Output
Current
Input
OPA128
2
3
6
Output
7
<1pF to prevent gain peaking.
8
+15V
0.1µF
5 x 10
9
V/W
0.1µF
–15V
4
0.01µF
Circuit must be well shielded.
Guard
Silicon Detector Corp.
SD-020-11-21-011
10
10
Ω
10
10
Ω