LM1203AN National Semiconductor, LM1203AN Datasheet - Page 15

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

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

LM1203A vs LM1203
LM1203A is an improved version of the LM1203 RGB video
amplifier system and is pin and function compatible with the
LM1203 LM1203A’s output voltage can swing as low as
0 15V as opposed to 0 9V for the LM1203 This eliminates
the need for a level shift stage between the preamplifier and
the CRT driver in most applications
The LM1203A also offers faster rise and fall times of 4 ns vs
7 ns for the LM1203 and 100 MHz bandwidth vs 70 MHz for
LM1203 With a peaking capacitor across the drive resistor
LM1203A’s bandwidth can be extended to 150 MHz Be-
cause of LM1203A’s wide bandwidth the device may oscil-
late if plugged directly into an existing LM1203 board For
optimum performance and stable operation a double sided
FIGURE 12(a) PC Board Silk Screen
15
Systems John Wiley
printed circuit board with adequate ground plane and power
supply decoupling as close to the V
recommended Figure 12 shows the layout of the PC board
for Figure 11’s circuit For suggestions on optimum PC
board layout please see the reference section below
The LM1203A also includes a built-in power down spot killer
to prevent a flash on the screen upon power down In some
preamplifiers the video output signal may go high as the
device is being powered down This may cause a whiter
than white level at the output of the CRT driver thus caus-
ing a flash on the screen
REFERENCE
Ott Henry W Noise Reduction Techniques in Electronic
Sons New York 1976
CC
pins as possible is
http
TL H 11441– 16
www national com