CLC5602IN National Semiconductor, CLC5602IN Datasheet - Page 13

• Manufacturer Part Number: CLC5602IN
• Description: IC AMP VIDEO DUAL HI OUT 8-DIP
• Manufacturer: National Semiconductor

Specifications of CLC5602IN

• Applications: Current Feedback
• Number Of Circuits: 2
• -3db Bandwidth: 135MHz
• Slew Rate: 300 V/µs
• Current - Supply: 1.6mA
• Current - Output / Channel: 130mA
• Mounting Type: Through Hole
• Package / Case: 8-DIP (0.300", 7.62mm)
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Other names: *CLC5602IN

Application Division
Feedback Resistor Selection
The feedback resistor, R
frequency response of a current feedback amplifier.
Optimum performance of the CLC5602, at a gain of +2V/V, is
achieved with R
plots in the Typical Performance sections illustrate the
recommended R
values of R
peaking. Within limits, R
frequency response.
As a rule of thumb, if the recommended R
the bandwidth will be cut in half.
Unity Gain Operation
The recommended R
1k . R
node may require a slight increase in R
frequency response.
Load Termination
The CLC5602 can source and sink near equal amounts of
current. For optimum performance, the load should be tied to
V
Driving Cables and Capacitive Loads
When driving cables, double termination is used to prevent
reflections. For capacitive load applications, a small series
resistor at the output of the CLC5602 will improve stability
and settling performance. The Frequency Response vs. C
plot, shown below in Figure 7 , gives the recommended
series resistance value for optimum flatness at various
capacitive loads.
V
• Decrease R
• Increase R
V
V
cm
in
in
o
bandwidth
bandwidth
.
FIGURE 6. Dual Supply Inverting Configuration
A
f
v
R
is left open. Parasitic capacitance at the inverting
b
f
provide the maximum bandwidth with minimal
R
f
R
to roll off frequency response and compress
f
3
2
g
f
f
f
to peak frequency response and extend
equal to 750 . The frequency response
for several gains. These recommended
CLC5602
-
+
V
V
1/2
CC
EE
f
8
4
for unity gain (+1V/V) operation is
f
6.8 F
0.1 F
0.1 F
6.8 F
can be adjusted to optimize the
f
+
, affects the loop gain and
R
f
1
+
(Continued)
Note: R
for the non-inverting input.
Select R
R
in
f
= R
f
to maintain a flat
is doubled, then
V
t
b
|| R
t
o
provides DC bias
to yield desired
g
.
DS015000-44
L
13
Transmission Line Matching
One method for matching the characteristic impedance (z
of a transmission line or cable is to place the appropriate
resistor at the input or output of the amplifier.
Figure 8 shows typical inverting and non-inverting circuit
configurations for matching transmission lines.
Non-inverting gain applications:
Inverting gain applications:
The input and output matching resistors attenuate the signal
by a factor of 2, therefore additional gain is needed. Use C
to match the output transmission line over a greater
frequency range. C
amplifier’s output impedance with frequency.
Power Dissipation
Follow these steps to determine the power consumption of
the CLC5602:
1. Calculate the quiescent (no-load) power: P
V
2. Calculate the RMS power at the output stage:
P
voltage and current across the external load.
3. Calculate the total RMS power: P
• Connect R
• Make R
• Use R
• Connect R
• Make R
• Make R
V
V
EE
o
1
2
=(V
caused by the transmission line, or by parasitics.
+
+
)
-
-
CC
R
R
1
4
1M
-V
FIGURE 8. Transmission Line Matching
FIGURE 7. Frequency Response vs. C
3
load
1
4
5
, R
, R
, II R
1k
to isolate the amplifier from reactive loading
V
+
-
3
3
o
)(I
Z
Z
2
6
= 1V
0
0
directly to ground.
directly to ground.
, R
, and R
load
C
g
1k
R
L
= Z
s
= 100pF
6
pp
), where V
6
= 20
, and R
R
o
compensates for the increase of the
C
R
R
.
R
s
Frequency (Hz)
L
R
2
R
5
7
C
s
= 46.4
C
= 10pF
3
g
R
L
L
equal to Z
= 1000pF
s
10M
= 6.7
7
equal to Z
CLC5602
+
-
1k
1/2
load
R
f
o
and I
t
.
=P
C
R
o
amp
6
6
.
load
+P
amp
100M
are the RMS
o
DS015000-45
Z
www.national.com
0
=1
L
DS015000-46
CC
(V
R
CC
7
V
o
o
6
)
-