Datasheet

LF147 - LF247 - LF347
8/10
TYPICAL APPLICATIONS (continued)
POSITIVE FEEDBACK BANDPASS FILTER
OUTPUT A OUTPUT B
-
-
1/4
220pF
43k
W
Input
1.5k
W
43k
W
220pF
43k
W
16k
W
1/4
30k
W
Output A
-
1/4
1.5k
W
220pF
43k
W
220pF
43k
W
-
1/4
43k
W
16k
W
30k
W
Output B
Ground
LF347
LF347 LF347
LF347
SECOND ORDER BANDPASS FILTER
fo = 100kHz; Q = 30; Gain = 16
CASCADED BANDPASS FILTER
fo = 100kHz; Q = 69; Gain = 16