clc436 National Semiconductor Corporation, clc436 Datasheet - Page 6

• Manufacturer Part Number: clc436
• Description: 200mhz, ?15v, Low-power Voltage Feedback Op Amp
• Manufacturer: National Semiconductor Corporation

Instrumentation Amplifier
An instrumentation circuit is shown in Figure 5. The
high CMRR of the CLC436 benefits this application.
The resistors are kept equal to improve the overall
CMRR.
2nd Order Sallen-Key Band-Pass Filter
The CLC436 is well suited for Sallen-Key type active
filters. Figure 6 illustrates the band pass topology
and design equations. For optimum high frequency
performance:
Begin design by choosing reasonable values for C
and C
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National’s products are not authorized for use as critical components in life support devices or systems without the express written approval
of the president of National Semiconductor Corporation. As used herein:
National does not assume any responsibility for use of any circuitry described, no circuit patent licenses are implied and National reserves the right at any time without notice to change said
circuitry and specifications.
V
V
N
1
2
500
1. Life support devices or systems are devices or systems which, a) are intended for surgical implant into the body, or b) support or
2. A critical component is any component of a life support device or system whose failure to perform can be reasonably expected to
•
•
2
Keep the resistor values between 10 and 1k
Keep the capacitor values between 10pF
and 500pF
and then setting the desired mid-band gain.
sustain life, and whose failure to perform, when properly used in accordance with instructions for use provided in the labeling, can
be reasonably expected to result in a significant injury to the user.
cause the failure of the life support device or system, or to affect its safety or effectiveness.
Figure 5: Instrumentation Amplifier
+
CLC436
CLC436
-
+
-
500
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Corporation
1111 West Bardin Road
Arlington, TX 76017
Tel: [phone]
Fax: [phone]
500
500
500
R
1
500
CLC436
+
-
500
National Semiconductor
Europe
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50
V
o
= 3(V
2
-V
1
)
1
6
R
R
R
C
G 1
1
2
3
2
V
in
2
GR
5
5GR
1
GC 2 f
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R
C
R
R
g
1
1
f
Figure 6: Sallen-Key Active Filter
1
1
C
1
Q
, desired mid band gain
1
1 4.8Q
4.8Q
1 4.8Q
, where f
C
2
2
2
2G G
4Q
2
R
3
2G G
2
2G G
R
R
2
desired center frequency
2
g
+
CLC436
-
2
2
National Semiconductor
Japan Ltd.
Tel: [phone]
Fax: [phone]
R
1
f
G 1
Lit #150436-004
V
o