LT6550/LT6551
3.3V Triple and Quad
Video Amplifiers
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FEATURES
DESCRIPTIO
The LT®6550/LT6551 are 3.3V triple and quad high speed
video amplifiers. These voltage feedback amplifiers drive
double terminated 50Ω or 75Ω cables and are configured
for a fixed gain of 2, eliminating six or eight external gain
setting resistors. The LT6550/LT6551 feature 110MHz
–3dB bandwidth, high slew rates and fast settling, making
them ideal for RGB video processing.
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Single Supply Operation from 3V to 12.6V
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Small (3mm × 5mm) MSOP 10-Lead Package
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Internal Resistors for a Gain of Two
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340V/µs Slew Rate
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110MHz –3dB Bandwidth
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30MHz Flat to 0.25dB
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3% Settling Time: 20ns
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Input Common Mode Range Includes Ground
The LT6551 quad is designed for single supply operation
and the LT6550 triple can be used on either single or split
supplies. On a single 3.3V supply, the input voltage range
extends from ground to 1.55V and the output swings to
within 400mV of the supply voltage while driving a 150Ω
load. These features, combined with the ability to accept
RGB video signals without the need for AC coupling or
level shifting of the incoming signals, make the LT6550/
LT6551 an ideal choice for low voltage video applications.
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Rail-to-Rail Output
High Output Drive: 60mA
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Operating Temperature Range: –40°C to 85°C
24-Bit RGB
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APPLICATIO S
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Automotive Displays
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LCD and CRT Compatible
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RGB Amplifiers
Coaxial Cable Drivers
Low Voltage High Speed Signal Processing
Set Top Boxes
Both the LT6550 and LT6551 are available in the small
10-Pin MSOP package and utilize a flow-thru pin out. The
small footprint results in a compact high performance
video amplifier solution.
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, LTC and LT are registered trademarks of Linear Technology Corporation.
All other trademarks are the property of their respective owners.
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TYPICAL APPLICATIO
3.3V Single Supply LT6551 RGB Plus SYNC Cable Driver
LT6551
450Ω
450Ω
450Ω
450Ω
450Ω
R
Output Step Response
IN
75Ω
3.3V
–
OA
+
75Ω
R
G
OUT
450Ω
V
75Ω
75Ω
75Ω
G
OUT
IN
75Ω
–
OA
+
75Ω
75Ω
75Ω
OUT
450Ω
B
IN
75Ω
–
0V
OA
+
B
OUT
V
IN
450Ω
SYNC
IN
0V
6550/51 TA01b
V
V
= 3.3V
75Ω
S
–
= 0.5V TO 1.25V
OA
IN
+
f = 10MHz
GND
SYNC
OUT
75Ω
6551 TA01a
65501fa
1