OPA128 Datasheet, PDF (9/11 Pages) Burr-Brown (TI) – Difet Electrometer-Grade OPERATIONAL AMPLIFIER

<1pF to prevent gain peaking.
Silicon Detector Corp.
SD-020-11-21-011
0.01µF
10¹⁰Ω
+15V
Guard
0.1µF
8
2
7
6
OPA128
34
10¹⁰Ω
0.1µF
Output
5 x 10⁹ V/W
–15V
Circuit must be well shielded.
FIGURE 7. Sensitive Photodiode Amplifier.
Current
Input
1000MΩ _18kΩ
2
6
OPA128
3
8
2kΩ
Output
V_O = –1V/nA
FIGURE 8. Current-to-Voltage Converter.
+5V
Biased
Current
Transducer
10⁹Ω
2
6
OPA128
3
8
+15V
7
5
6
REF101
8
+5V
4
1
FIGURE 9. Biased Current-to-Voltage Converter.
3
4
5
10 INA101HP
11
12
14
1
Output
V_O = 1mV/pA
®
9
OPA128