MC34071,2,4,A MC33071,2,4,A
GENERAL ADDITIONAL APPLICATIONS INFORMATION V = ±15.0 V
S
Figure 55. Second Order Low–Pass Active Filter
Figure 56. Second Order High–Pass Active Filter
C2
0.02
R1
46.1 k
C2
0.05
C1
1.0
R2
5.6 k
–
R1
560
R3
510
MC34071
C1
1.0
–
f = 100 Hz
o
H = 20
o
R2
1.1 k
+
MC34071
C1
f = 1.0 kHz
H = 10
o
o
+
0.44
H +0.5
o
Then: R1 =
R2 =
Choose: f , H , C1
o
o
Choose: f , H , C2
o
o
πf C1
o
2
2
Then: C1 = 2C2 (H +1)
o
2πf C1 (1/H +2)
o
o
2
R2
R2
C
R2 =
R3 =
R1 =
C2 =
4πf C2
o
H +1
o
H
o
H
o
Figure 57. Fast Settling Inverter
Figure 58. Basic Inverting Amplifier
C *
F
V = 10 V
O
Step
R
F
+
MC34071
V
O
2.0 k
R1
–
R
L
–
V
in
R2
MC34071
V
O
+
V
O
R2
R1
R1
R1 +R2
I
=
BW (–3.0 dB) = GBW
t = 1.0 µs
V
in
s
Uncompensated
to 1/2 LSB (8–Bits)
SR = 13 V/µs
t = 2.2 µs
s
to 1/2 LSB (12–Bits)
High Speed
DAC
Compensated
SR = 13 V/µs
*Optional Compensation
Figure 59. Basic Noninverting Amplifier
Figure 60. Unity Gain Buffer (A = +1.0)
V
+
+
V
in
MC34071
V
O
MC34071
V
O
–
–
V
in
R2
R
L
BW = 200 kHz
p
R1
V = 20 V
O
pp
V
O
R2
R1
SR = 10 V/µs
=
1 +
V
in
R1
R1 +R2
BW (–3.0 dB) = GBW
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