MC34071,2,4,A MC33071,2,4,A
(Typical Single Supply Applications VCC = 5.0 V)
Figure 37. AC Coupled Noninverting Amplifer
VCC
5.1 M
VO
0
3.7 Vpp
0
3.7 Vpp
Figure 38. AC Coupled Inverting Amplifier
VCC
100 k
20 k
Cin
1.0 M
+
MC34071
CO
VO
68 k
Cin
10 k
+
MC34071
36.6 mVpp
Vin
1.0 k
–
100 k
AV = 101
BW (–3.0 dB) = 45 kHz
10 k
RL
–
CO
Vin 370 mVpp
100 k
VO
10 k
RL
AV = 10 BW (–3.0 dB) = 450 kHz
Figure 39. DC Coupled Inverting Amplifer
Maximum Output Swing
Figure 40. Unity Gain Buffer TTL Driver
2.5 V
VO
2.63 V
4.75 Vpp
91 k
VCC
0
Vin
+
MC34071
0 to 10,000 pF
MC54/74XX
5.1 k
RL
5.1 k
100 k
+
MC34071
–
Cable
TTL Gate
VO
–
1.0 M
Figure 42. Active Bandpass Filter
Vin
AV = 10
BW (–3.0 dB) = 450 kHz
R1
C
0.047
C
0.047
R3
2.2 k
–
MC34071
Figure 41. Active High–Q Notch Filter
Vin
≥
0.2 Vdc
R
Vin
16 k
C
0.01
R
16 k
Vin
1.1 k
R2
5.6 k
+
VO
fo = 30 kHz
Ho = 10
Ho = 1.0
VCC
–
MC34071
VO
Given fo = Center Frequency
AO = Gain at Center Frequency
Choose Value fo, Q, Ao, C
Then:
R3 =
fo = 1.0 kHz
1
fo =
4πRC
Q
R3
R1 =
2Ho
πf
oC
0.4 VCC
+
R2 =
R1 R3
4Q2R1–R3
Qofo
< 0.1
GBW
32 k
2.0 R
For less than 10% error from operational amplifier
where fo and GBW are expressed in Hz.
GBW = 4.5 MHz Typ.
2.0 C
0.02
2.0 C
0.02
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