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
H
= 100 Hz
= 20
R2
1.1 k
o
o
+
MC34071
C1
0.44
f
= 1.0 kHz
o
+
H
= 10
o
H +0.5
o
Then: R1 =
R2 =
Choose: f , H , C1
o
o
Choose: f , H , C2
o
o
π
f C1
o
2
2
Then: C1 = 2C2 (H +1)
o
2πf C1 (1/H +2)
o o
2
R2
H +1
R2
C
R2 =
R3 =
R1 =
C2 =
4π
f C2
H
o
o
o
H
o
Figure 57. Fast Settling Inverter
Figure 58. Basic Inverting Amplifier
C *
F
V
= 10 V
Step
O
R
+
F
MC34071
V
O
2.0 k
R1
–
R
L
–
V
R2
in
MC34071
V
O
+
V
V
R2
R1
O
R1
R1 +R2
I
=
BW (–3.0 dB) = GBW
t
= 1.0 µs
s
in
Uncompensated
to 1/2 LSB (8–Bits)
= 2.2
SR = 13 V/µs
t
µs
s
High Speed
DAC
Compensated
to 1/2 LSB (12–Bits)
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
V
O
in
R2
R1
SR = 10 V/
µ
s
=
1 +
R1
BW (–3.0 dB) = GBW
R1 +R2
15
MOTOROLA ANALOG IC DEVICE DATA
MOTOROLA [ MOTOROLA ]
