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PRODUCT SPECIFICATION
RC3403A
6
Typical Applications
(continued
)
Figure 11. Voltage Controlled Oscillator
Figure 12. AC Coupled Non-Inverting Amplifier
Figure 13. AC Coupled Inverting Amplifier
Figure 14. Multiple Feedback Bandpass FIlter
65-3403A-13
1/4
3403A
1/4
3403A
+V
C
R
100K
51K
R/2
50K
51K
+V
S
2
0.05
μ
F
10K
10K
51K
Output 1
Output 2
Note:
Wide control voltage ranges:
0V
2
V
C
2
2 (+V
S
– 1.5V)
3
2
1
5
6
7
1/4
3403A
65-3403A-14
R1
100K
R2
1M
C1
0.1
μ
F
CIN
R3
1M
R4
100K
V
IN
(+)
(–)
C2
10
μ
F
R5
100K
A
V
= 1 +
R1
R2
A
V
= 11 (As shown)
C
O
R
B
6.2K
R
L
–V
S
0
2V
P-P
V
OUT
3
2
1
65-3403A-15
1/4
3403A
V
IN
C
IN
R1
10K
R2
100K
R
F
R1
A
V
=
A
V
= 10 (As shown)
+V
S
C1
10
μ
F
R
B
6.2K
R
F
100K
C
O
R
L
10K
2V
P-P
+
3
2
1
65-3403A-16
1/4
3403A
REF
V
W
C1
R1
1K
C2
R2
1K
R3
10
μ
F
+
-
F Center Frequency
BW Bandwidth
R
in k
C in
μ
F
F
Q = o
BW
C1 = C2 =
R1 = R2 = 1
R3 = 9Q - 1
If source impedance is high or varies, filter may be preceeded
with voltage follower buffer to stabilize filter parameters.
Use scaling factors in these expressions.
D
Q
3
Design Example:
Given: Q = 5, Fo
Let R1 = R2 = 10 k
Then R3 = 9 (5) - 10
R3 = 215 k
W
C = 3
W
5
3
2
1