TL084_07 Datasheet, PDF (10/16 Pages) STMicroelectronics – General purpose JFET quad operational amplifier

Typical applications
TL084
Figure 22. Positive feeback bandpass filter
16k Ω
220pF
43k Ω
43k Ω
Input
-
22 0p F ^1/4
TL084
43k Ω
1.5 k Ω
30k Ω
-
1/4
TL084
43k Ω
220pF
220pF
43k Ω
-
1/4
TL084
16k Ω
43k Ω
1.5 k Ω
30k Ω
-
1/4
TL084
Output B
Output A
Ground
Figure 23. Output A
Figure 24. Output B
Second order bandpass filter
fo = 100kHz; Q = 30; Gain = 4
Cascaded bandpass filter
fo = 100kHz; Q = 69; Gain = 16
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