OPA128 Burr-Brown, OPA128 Datasheet - Page 9

• Manufacturer Part Number: OPA128
• Description: Difet Electrometer-Grade OPERATIONAL AMPLIFIER
• Manufacturer: Burr-Brown

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