MC34071,2,4,A MC33071,2,4,A
(Typical Single Supply Applications VCC = 5.0 V)
V
CC
5.1 M
V
O
3.7 V
pp
0
0
+
3.7 V
pp
V
CC
100 k
1.0 M
20 k
C
in
C
O
+
V
O
68 k
MC34071
36.6 mV
C
in
−
pp
MC34071
−
10 k
V
O
100 k
C
O
V
in
10 k
10 k
R
L
100 k
R
L
V
in
370 mV
pp
1.0 k
A = 101
V
BW (−3.0 dB) = 45 kHz
A = 10 BW (−3.0 dB) = 450 kHz
V
Figure 38. AC Coupled Noninverting Amplifier
Figure 39. AC Coupled Inverting Amplifier
V
O
V
CC
4.75 V
pp
2.63 V
91 k
5.1 k
R
L
5.1 k
100 k
2.5 V
+
MC34071
V
O
0
0 to 10,000 pF
Cable
−
+
MC34071
V
in
MC54/74XX
1.0 M
A = 10
−
TTL Gate
V
V
in
BW (−3.0 dB) = 450 kHz
Figure 40. DC Coupled Inverting Amplifier
Maximum Output Swing
Figure 41. Unity Gain Buffer TTL Driver
C
R3
0.047
2.2 k
R1
−
MC34071
V
in
1.1 k
V
O
C
0.047
+
R2
5.6 k
V
CC
f = 30 kHz
o
V
≥ 0.2 Vdc
in
V
O
H = 10
H = 1.0
o
−
MC34071
o
0.4 V
R2 =
CC
R
R
+
Given f = Center Frequency
V
in
o
16 k
16 k
A
O
= Gain at Center Frequency
C
0.01
Choose Value f , Q, A , C
o
o
Then:
Q
R3
R1 = ꢁ
2H
R1 R3
2
R3 =
ꢁ
f = 1.0 kHz
pf C
o
4Q R1−R3
o
o
2.0 R
32 k
Q f
o o
1
< 0.1
f =
o
For less than 10% error from operational amplifier
GBW
4pRC
where f and GBW are expressed in Hz.
2.0 C
0.02
2.0 C
0.02
o
GBW = 4.5 MHz Typ.
Figure 43. Active Bandpass Filter
Figure 42. Active High−Q Notch Filter
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