CLC5623IM National Semiconductor, CLC5623IM Datasheet - Page 16

• Manufacturer Part Number: CLC5623IM
• Description: IC AMP VIDEO TRIPLE 14-SOIC
• Manufacturer: National Semiconductor

Specifications of CLC5623IM

• Applications: Current Feedback
• Number Of Circuits: 3
• -3db Bandwidth: 148MHz
• Slew Rate: 370 V/µs
• Current - Supply: 3.2mA
• Current - Output / Channel: 130mA
• Mounting Type: Surface Mount
• Package / Case: 14-SOIC (0.154", 3.90mm Width)
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Other names: *CLC5623IM

www.national.com
Application Division
The evaluation boards are designed to accommodate dual
supplies. The boards can be modified to provide single
supply operation. For best performance; 1) do not connect
the unused supply, 2) ground the unused supply pin.
SPICE Models
SPICE models provide a means to evaluate amplifier
designs. Free SPICE models are available for National’s
monolithic amplifiers that:
The readme file that accompanies the diskette lists released
models, and provides a list of modeled parameters. The
application note OA-18, Simulation SPICE Models for
National’s
reproduction of the readme file.
Application Circuits
Single Supply Cable Driver
The typical application shown below shows one of the
CLC5623 amplifiers driving 10m of 75
CLC5623 is set for a gain of +2V/V to compensate for the
divide-by-two voltage drop at V
V
Single Supply Lowpass Filter
Figure 14 and Figure 15 illustrate a lowpass filter and design
equations. The circuit operates from a single supply of +5V.
The voltage divider biases the non-inverting input to 2.5V.
And the input is AC coupled to prevent the need for level
• General information about the boards
• Support Berkeley SPICE 2G and its many derivatives
• Reproduce typical DC, AC, Transient, and Noise
• Support room temperature simulations
in
performance
0.1 F
FIGURE 13. Response After 10m of Cable
5k
FIGURE 12. Single Supply Cable Driver
0.1 F
Op
V
5k
in
= 10MHz, 0.5V
1k
5
6
Amps,
CLC5623
+
-
+5V
1/3
11
4
1k
6.8 F
0.1 F
pp
+
contains
20ns/div
7
o
.
0.1 F
(Continued)
schematics
75
coaxial cable. The
DS015004-52
Coaxial Cable
10m of 75
and
DS015004-51
a
75
V
16
o
shifting the input signal at the source. Use the design
equations to determine R
desired Q and corner frequency.
This example illustrates a lowpass filter with Q = 0.707 and
corner frequency f
achieve a maximally flat, Butterworth response. Figure 16
indicates the filter response.
V
in
0.1 F
-12
-15
-18
-21
-24
-27
-30
For R
Gain K 1
Corner frequency
Q
Q
-3
-6
-9
3
0
c
FIGURE 14. Lowpass Filter Topology
(3 K)
RC
1
FIGURE 16. Lowpass Response
R C
5k
158
5k
R C
1
FIGURE 15. Design Equations
1
R
2 2
1 1
1
1M
R
2
c
158
= 10MHz. A Q of 0.707 was chosen to
100pF
R
R
R
R and C
1.698k
2
g
f
C
Frequency (Hz)
2
R C
R C
1
, R
1 2
2 1
2
c
1
, C
R
1
0.1 F
5
6
g
1
10M
CLC5623
-
, and C
+
+5V
R R C C
C
(1 K)
1/3
1 2 1 2
2
4
11
0.1 F
1
1k
C
C
R
2
1
f
7
R C
based on the
DS015004-54
R C
2 2
1 1
0.1 F
DS015004-55
100M
DS015004-53
100
V
o