LT1203_15 Datasheet, PDF (1/16 Pages) Linear Technology – 150MHz Video Multiplexers

FEATURES
s _{– 3dB Bandwidth: 150MHz}
s _{0.1dB Gain Flatness: 30MHz}
s _{Channel-to-Channel Switching Time: 25ns}
s _{Turn-On/Turn-Off Time: 25ns}
s _{High Slew Rate: 300V/µs}
s _{Disabled Output Impedance: 10MΩ}
s _{50mV Switching Transient}
s _{Channel Separation at 10MHz: > 90dB}
s _{Differential Gain: 0.02%}
s _{Differential Phase: 0.02°}
s _{Wide Supply Range: ±5V to ±15V}
s _{Output Short-Circuit Protected}
s _{Push-Pull Output}
APPLICATI S
s _{Broadcast Quality Video Multiplexing}
s _{Picture-in-Picture Switching}
s _HDTV
s _{Computer Graphics}
s _{Title Generation}
s _{Video Crosspoint Matrices}
s _{Video Routers}
TYPICAL APPLICATI
RED 1
RED 2
V^–
GREEN 1
GREEN 2
V^–
High Speed RGB MUX
+1
+1
LT1205
+1
+1
CHANNEL SELECT
V⁺
EN
LOGIC
V⁺
V_OUT RED
EN
LOGIC
V_OUT GREEN
BLUE 1
BLUE 2
V^–
+1
LT1203
+1
V⁺
EN
LOGIC
V_OUT BLUE
LT1203 • TA01
LT1203/LT1205
150MHz Video Multiplexers
DESCRIPTIO
The LT1203 is a wideband 2-input video multiplexer
designed for pixel switching and broadcast quality rout-
ing. The LT1205 is a dual version that is configured as a
4-input, 2-output multiplexer.
These multiplexers act as SPDT video switches with 10ns
transition times at toggle rates up to 30MHz. The – 3dB
bandwidth is 150MHz and 0.1dB gain flatness is 30MHz.
Many parts can be tied together at their outputs by using
the enable feature which reduces the power dissipation
and raises the output impedance to 10MΩ. Output capaci-
tance when disabled is only 3pF and the LT1203 peaks less
than 3dB into a 50pF load. Channel crosstalk and disable
isolation are greater than 90dB up to 10MHz. An on-chip
buffer interfaces to fast TTL or CMOS logic. Switching
transients are only 50mV with a 25ns duration. The
LT1203 and LT1205 outputs are protected against shorts
to ground.
The LT1203/LT1205 are manufactured using Linear
Technology’s proprietary complementary bipolar process.
The LT1203 is available in both the 8-lead PDIP and SO
package while the LT1205 is available in the 16-lead
narrow body SO package.
Large-Signal Response
1