clc417 National Semiconductor Corporation, clc417 Datasheet - Page 6

• Manufacturer Part Number: clc417
• Description: Dual Low-power, Programmable Gain Buffer
• Manufacturer: National Semiconductor Corporation

http://www.national.com
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 parame-
ters.
Models for National’s Op Amps, contains schematics and
a reproduction of the readme file.
Figure 5: Optional Evaluation Board Alterations
Support Berkeley SPICE 2G and its many
derivatives
Reproduce typical DC, AC, Transient, and
Noise performance
Support room temperature simulations
The application note OA-18, Simulation SPICE
730038 Bottom
730036 Top
C o m l i n e a r
( 9 7 0 ) 2 2 6 - 0 5 0 0
OUT1
730038
REV B
C4
+
Cut traces here
ROUT1
-Vcc
+Vcc
RF1
Cut traces here
C1
C2
C3
+
RF2
RG1 RIN1
ROUT2
OUT2
RG2
IN1
RIN2
GND
IN2
6
Video Cable Driver
The CLC417 was designed to produce exceptional video
performance at all three closed-loop gains. A typical
cable driving configuration is shown in Figure 6. In this
example, the amplifier is configured with a gain of 2.
Single to Differential Line Driver
The topology in Figure 7 accomplishes a single-ended to
differential conversion with no external components.
With this configuration, the value of Vin is limited to the
common mode input range of the CLC417.
6.8 F
-5V
NOTE:
The same
technique can
also be applied
to Channel A.
6.8 F
-5V
Figure 7: Single to Differential Line Driver
0.1 F
Applications Circuits
Figure 6: Typical Cable Driver
0.1 F
V
out1
A
A
V 2
V 1
250
= -1V/V
= 1V/V
250
250
-
+
+
-
250
250
250
V
V
+
250
-
+
out2
-
out1
250
= -V
= V
0
J
0.1 F
1
R
50
in
in
R
50
in
out
0.1 F
V
SMA
Input
V
out2
Coax
in
50
6.8 F
+5V
6.8 F
+5V
Video
Output
50