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UXGA Resolution RGB Amplifier Eliminates Negative Supply
"The LT6557’s unique internal architecture simplifies the task of processing high speed video signals in single supply applications,” according to Dan Tran, design section leader for Linear Technology’s Signal Conditioning Products. “An internal biasing feature allows the user to program the inputs of all three amplifiers to the same dc voltage level with a single resistor. This feature minimizes external component count and simplifies AC-coupled applications. Furthermore, the internal fixed gain of 2 eliminates six external gain setting resistors required for driving double-terminated cables.”
The LT6557 is ideal for use in SXGA and UXGA LCD projectors and monitors, digital presenters, scanners, automotive display systems such as in-car navigation or in-car video systems and CCD imaging systems.
Offered in the space saving 16-pin SSOP and DFN packages, the LT6557 is fully specified for operation over the industrial and commercial temperature ranges. Pricing starts at $2.50 each in 1,000-piece quantities.
Photo Caption: Single Supply RGB Amplifier
Summary of Features: LT6557
• 500MHz -3dB Small Signal Bandwidth
• 400MHz -3dB 2VP-P Large Signal Bandwidth
• 120MHz ±0.1dB Bandwidth
• High Slew Rate: 2200V/us
• Single 4V to 7.5V Supply Operation
• Output Swings to 0.8V of Supply Rails
• AC Coupling with Programmable DC Input Bias
• Fixed Gain of 2: Requires No External Resistors
• Available in SSOP-16 and 5mm x 3mm DFN Packages
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