LT1675/LT1675-1
250MHz, Triple and Single
RGB Multiplexer with Current Feedback Amplifiers
configured for a fixed gain of 2, eliminating six external
FEATURES
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100MHz Pixel Switching
鈥?3dB Bandwidth: 250MHz
Small 16-Pin SSOP Package
Channel Switching Time: 2.5ns
Expandable to Larger Arrays
Drives Cables Directly
High Slew Rate: 1100V/碌s
Low Switching Transient: 50mV
Shutdown Supply Current: 0mA
Output Short-Circuit Protected
gain setting resistors. The SPDT switches are designed to
be break-before-make to minimize unwanted signals cou-
pling to the input.
The LT1675-1 is a single version with two inputs, a single
output and is ideal for a single channel application such as
video sync.
APPLICATIONS
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RGB Switching
Workstation Graphics
Pixel Switching
Coaxial Cable Drivers
High Speed Signal Processing
DESCRIPTION
The LT
廬
1675 is a high speed RGB multiplexer designed for
pixel switching and fast workstation graphics.
Included on chip are three SPDT switches and three
current feedback amplifiers. The current feedback ampli-
fiers drive double-terminated 50鈩?or 75鈩?cables and are
The key to the LT1675 fast switching speed is Linear
Technology鈥檚 proprietary high speed bipolar process. This
MUX can toggle between sources in excess of 100MHz,
has a slew rate over 1000V/碌s and has a 鈥?dB bandwidth
of 250MHz. The speed and ease of use of the LT1675 make
it ideal for high performance PCs, workstations and pro-
fessional video monitors. The input-referred switching
transient is only 50mV
P-P
and lasts just 5ns, making it
virtually undetectable. Power supply requirements are
鹵4V
to
鹵6V
and power dissipation is only 300mW on
鹵5V,
or 100mW for the LT1675-1. The expandable feature uses
the disable pin to reduce the power dissipation to near
0mW in the off parts.
Unlike competitive solutions that are in bulky high pin
count packages, the LT1675 is in a 16-lead narrow body
SSOP. This small footprint, the size of an SO-8, results in
a very clean high performance solution. The LT1675-1 is
available in the tiny MSOP and the SO-8.
, LTC and LT are registered trademarks of Linear Technology Corporation.
TYPICAL APPLICATION
High Speed RGB MUX
LT1675
RED 1
75鈩?/div>
+2
GREEN 1
75鈩?/div>
75鈩?/div>
BLUE 1
75鈩?/div>
RED 2
75鈩?/div>
GREEN 2
75鈩?/div>
SELECT RGB1/RGB2
BLUE 2
75鈩?/div>
+1
ENABLE
1675 TA01
+1
+1
CABLE
+1
+2
+1
+2
+1
U
U
U
Select Pin Switches Inputs at 100MHz
V
+
75鈩?CABLE
V
OUT RED
75鈩?/div>
SELECT
LOGIC
PIN 10
0V
1V
RED
OUT
0V
500mV/DIV
3V
1V/DIV
V
OUT GREEN
75鈩?/div>
75鈩?CABLE
V
OUT BLUE
75鈩?/div>
V
鈥?/div>
RED 1 = 0V, RED 2 = 1V, R
L
= 100鈩?/div>
MEASURED BETWEEN 50鈩?BACK TERMINATION AND 50鈩?LOAD
1675 TA02
1
LT1675CGN 產(chǎn)品屬性
LT1675/-1
100
集成電路 (IC)
線性 - 視頻處理
-
多路復(fù)用器
驅(qū)動器，處理，切換
表面貼裝
16-SSOP（0.154"，3.90mm 寬）
16-SSOP
管件
LT1675CGN相關(guān)型號PDF文件下載
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型號
版本
描述
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