LM1203AN National Semiconductor, LM1203AN Datasheet - Page 8

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LM1203AN

Manufacturer Part Number
LM1203AN
Description
IC VIDEO AMP RGB 150MHZ 28DIP
Manufacturer
National Semiconductor
Datasheet

Specifications of LM1203AN

Applications
General Purpose
Number Of Circuits
3
-3db Bandwidth
70MHz
Current - Supply
73mA
Current - Output / Channel
28mA
Voltage - Supply, Single/dual (±)
10.8 V ~ 13.2 V
Mounting Type
Through Hole
Package / Case
28-DIP (0.600", 15.24mm)
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Other names
*LM1203AN

Available stocks

Company
Part Number
Manufacturer
Quantity
Price
Part Number:
LM1203AN
Manufacturer:
TI/德州仪器
Quantity:
20 000
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Circuit Description
For individual gain adjustment of each video channel a 51
resistor in series with a 100
with the red and green channel drive pins A 91
used with the blue channel drive pin sets the blue channel
amplifier gain at approximately 6 2 The 100
at the red and green channel drive pins allow a gain of 6 2
with
tor of Q12 is buffered and level shifted down by Q13 Q14
and Q15 to the base of the output emitter follower Q16 A
50
of Q16 and the video output pin so as to prevent oscillations
when driving capacitive loads An external resistor should
be connected between the video output pin and ground
www national com
g
decoupling resistor is included in series with the emitter
25% gain adjustment The video signal at the collec-
FIGURE 5 Block Diagram of LM1203A Video Amplifier with Contrast and Black Level Control
potentiometer should be used
(Continued)
potentiometer
resistor
8
The value of this resistor should not be less than 390
else package power limitations may be exceeded under
worst case conditions (high supply voltage maximum cur-
rent maximum temperature) The collector current from the
video output transistor of each video channel is returned to
the power supply at V
pation calculations note that the data sheet specifies only
the V
with no pull down resistor at the output (i e R
test circuit Figure 2 ) The IC power dissipation due to V
is dependant upon the external video output pull down resis-
tor
CC1
and V
CC2
CC2
supply current at 12V supply voltage
pin 23 When making power dissi-
L
TL H 11441 – 9
e
% see
CC2
or

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