OPA111 Burr-Brown, OPA111 Datasheet - Page 12

• Manufacturer Part Number: OPA111
• Description: Low Noise Precision Difet OPERATIONAL AMPLIFIER
• Manufacturer: Burr-Brown

FIGURE 17. FET Input Instrumentation Amplifier.
FIGURE 18. Low-Droop Positive Peak Detector.
Input
®
OPA111
+In
–In
R
G
2
3
3507J
101
3
2
2
3
IN914*
8
10pF
OPA111
OPA111
30pF
5k
5k
6
R
R
F
F
6
6
*Reverse polarity for
negative peak detection.
IN914*
10k
I
Gain = 100
CMRR
R
B
IN
= 1pA
2
3
= 10
13
25k
25k
1M
106dB
12
25k
2N4117*
1
Differential Amplifier
25k
Differential Voltage Gain = 1 + 2R
Burr-Brown
INA105
0.01µF
Polystyrene
2
3
OPA111
8
5
6
Droop
6
100µV/s
Output
F
/R
G
Output