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LT1204

Linear Technology
Part Number LT1204
Manufacturer Linear Technology
Description 4-Input Video Multiplexer with 75MHz Current Feedback Amplifier
Published Mar 22, 2005
Detailed Description LT1204 4-Input Video Multiplexer with 75MHz Current Feedback Amplifier DESCRIPTIO The LT ®1204 is a 4-input video multip...
Datasheet PDF File LT1204 PDF File

LT1204
LT1204

Overview
LT1204 4-Input Video Multiplexer with 75MHz Current Feedback Amplifier DESCRIPTIO The LT ®1204 is a 4-input video multiplexer designed to drive 75Ω cables and easily expand into larger routing systems.
Wide bandwidth, high slew rate, and low differential gain and phase make the LT1204 ideal for broadcast quality signal routing.
Channel separation and disable isolation are greater than 90dB up to 10MHz.
The channelto-channel output switching transient is only 40mVP-P, with a 50ns duration, making the transition imperceptible on high quality monitors.
A unique feature of the LT1204 is its ability to expand into larger routing matrices.
This is accomplished by a patent pending circuit that bootstraps the feedback resistors in the disable condition, raising the true output impedance of the circuit.
The effect of this feature is to eliminate cable misterminations in large systems.
The large input and output signal levels supported by the LT1204 when operated on ± 15V supplies make it ideal for general purpose analog signal selection and multiplexing.
A shutdown feature reduces the supply current to 1.
5mA.
, LTC and LT are registered trademarks of Linear Technology Corporation.
FEATURES s s s s s s s s s s s s 0.
1dB Gain Flatness > 30MHz Channel Separation at 10MHz: 90dB 40mV Switching Transient, Input Referred – 3dB Bandwidth, AV = 2, RL = 150Ω: 75MHz Channel-to-Channel Switching Time: 120ns Easy to Expand for More Inputs Large Input Range: ± 6V 0.
04% Differential Gain, RL = 150Ω 0.
06° Differential Phase, RL = 150Ω High Slew Rate: 1000V/µs Output Swing, RL = 400Ω: ± 13V Wide Supply Range: ± 5V to ± 15V APPLICATI s s s s s S Broadcast Quality Video Multiplexing Large Matrix Routing Medical Imaging Large Amplitude Signal Multiplexing Programmable Gain Amplifiers TYPICAL APPLICATI VIN0 75Ω 2 3 75Ω 4 5 75Ω 6 7 75Ω 8 REF –15V 6.
8k 8.
2k GND VIN3 +1 GND VIN2 +1 GND VIN1 +1 1 VIN0 +1 V+ 16 15V 75Ω VOUT + CFA VO 15 V– 14 –20 ALL HOSTILE CROSSTALK (dB) VIN1 – –15V ...


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