Datasheet
TL081, TL081A, TL081B, TL082, TL082A, TL082B
TL082Y, TL084, TL084A, TL084B, TL084Y
JFET-INPUT OPERATIONAL AMPLIFIERS
SLOS081D – FEBRUARY 1977 – REVISED FEBRUARY 1997
19
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
APPLICATION INFORMATION
1/41/4
Output BOutput A
+
–
1.5 kΩ V
CC–
43 kΩ
220 pF
43 kΩ
V
CC+
30 kΩ
V
CC+
43 kΩ
V
CC–
+
–
16 kΩ
43 kΩ
Input
220 pF 220 pF
16 kΩ
+
–
V
CC–
V
CC+
30 kΩ
V
CC+
43 kΩ
220 pF
43 kΩ
V
CC–
+
–
1.5 kΩ
1/4
TL084
TL084
1/4
TL084
TL084
2 kHz/div
Second-Order Bandpass Filter
f
o
= 100 kHz, Q = 30, GAIN = 4
2 kHz/div
Cascaded Bandpass Filter
f
o
= 100 kHz, Q = 69, GAIN = 16
Output A
Output
B
Figure 27. Positive-Feedback Bandpass Filter