LF355AH National Semiconductor, LF355AH Datasheet - Page 15
LF355AH
Manufacturer Part Number
LF355AH
Description
Series Monolithic JFET Input Operational Amplifiers
Manufacturer
National Semiconductor
Datasheet
1.LF355AH.pdf
(18 pages)
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Typical Applications
(Continued)
TL H 5646– 34
High Q Band Pass Filter
High Q Notch Filter
15
2R1
2C
Capacitors should be matched to obtain high Q
f
100
Use LF155 for
X
X
NOTCH
TL H 5646 – 28
Low I
Low supply current
e
e
C1
B
R
e
e
e
120 Hz notch
300 pF
10 M
By adding positive feedback (R2)
Q increases to 40
f
V
Clean layout recommended
Response to a 1 Vp-p tone burst
300 s
BP
V
OUT
IN
e
e b
100 kHz
e
10 Q
55 dB Q
l
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