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LT1675 Datasheet(PDF) 1 Page - Linear Technology |
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LT1675 Datasheet(HTML) 1 Page - Linear Technology |
1 / 16 page 1 LT1675/LT1675-1 16751fb 250MHz, Triple and Single RGB Multiplexer with Amplifiers RED 1 GREEN 1 BLUE 1 RED 2 GREEN 2 BLUE 2 75 Ω 75 Ω 75 Ω 75 Ω CABLE CABLE CABLE V+ V– SELECT RGB1/RGB2 1675 TA01 ENABLE 75 Ω 75 Ω 75 Ω 75 Ω 75 Ω 75 Ω VOUT RED 75 Ω LT1675 75 Ω VOUT GREEN VOUT BLUE +1 +1 +2 +2 +2 +1 +1 +1 +1 High Speed RGB MUX ■ RGB Switching ■ Workstation Graphics ■ Pixel Switching ■ Coaxial Cable Drivers ■ High Speed Signal Processing The LT ®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 Ω or 75Ω cables and are ■ 100MHz Pixel Switching ■ – 3dB Bandwidth: 250MHz ■ Channel Switching Time: 2.5ns ■ Expandable to Larger Arrays ■ Drives Cables Directly ■ High Slew Rate: 1100V/ µs ■ Low Switching Transient: 50mV ■ Shutdown Supply Current: 100 µA ■ Output Short-Circuit Protected ■ Available in Small 16-Pin SSOP Package configured for a fixed gain of 2, eliminating six external 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. The key to the LT1675 fast switching speed is Linear Technology’s proprietary high speed bipolar process. This MUX can toggle between sources in excess of 100MHz, has a slew rate over 1000V/ µs and has a –3dB bandwidth of 250MHz. Power supply requirements are ±4V to ±6V and power dissipation is only 300mW on ±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. RED INPUT 1 = 0VDC, RED INPUT 2 = 1VDC MEASURED BETWEEN 50 Ω BACK TERMINATION AND 50Ω LOAD 500mV/DIV 1V/DIV 1675 TA02 0V RED OUT 1V 0V LOGIC INPUT PIN 10 3V Clocking Between 2 DC Levels at 100MHz APPLICATIO S FEATURES TYPICAL APPLICATIO DESCRIPTIO , LTC and LT are registered trademarks of Linear Technology Corporation. All other trademarks are the property of their respective owners. |
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