LM1201 National Semiconductor Corporation, LM1201 Datasheet - Page 10

• Manufacturer Part Number: LM1201
• Description: Video Amplifier System (obsolete)
• Manufacturer: National Semiconductor Corporation

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Figure 10 shows the LM1201 set up as a video amplifier
Figure 11 shows how a high frequency video switch may be
Applications Information
with biphase outputs Because the collector of output tran-
sistor Q12 is the only internal connection to V
termination to the power supply voltage allows one to obtain
inverted video at pin 10 Black level on the non-inverted
video output (pin 8) is set to 1 5V by the voltage divider on
pin 6
designed using multiple LM1201 devices All outputs can
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FIGURE 10 Preclamped Video Amplifier with Biphase Outputs
(Continued)
CC3
a 75
10
be OR’ed together assuming no more than one channel is
selected at any given time Channel selection is accom-
plished by keeping the appropriate SELECT SWITCH open
Closing the SELECT SWITCH on a given channel disables
that channel’s output (pin 8) leaving it in a high impedance
state A single pair of contrast and brightness potentiome-
ters control the selected channel’s gain and output DC
level
TL H 10006 – 10