OPA875

OPA875OPA875 www.ti.com ............................................................................................................................................ SBOS340C – DECEMBER 2006 – REVISED AUGUST 2008 Single 2:1 High-Speed Video Multiplexer FEATURES 1 2 700MHz SMALL-SIGNAL BANDWIDTH (AV = +2) 425MHz, 4VPP BANDWIDTH 0.1dB GAIN FLATNESS to 200MHz 4ns CHANNEL SWITCHING TIME LOW SWITCHING GLITCH: 40mVPP 3100V/µs SLEW RATE 0.025%/0.025° DIFFERENTIAL GAIN, PHASE HIGH GAIN ACCURACY: 2.0V/V ±0.4% APPLICATIONS RGB SWITCHING LCD PROJECTOR INPUT SELECT WORKSTATION GRAPHICS ADC INPUT MUX DROP-IN UPGRADE TO LT1675-1 Ch 0 Ch 1 75W OPA875 (Patented) 75W EN 75W Out SEL Channel Select 2:1 Video Multiplexer DESCRIPTION The OPA875 offers a very wideband, single-channel 2:1 multiplexer in an SO-8 or a small MSOP-8 package. Using only 11mA, the OPA875 provides a gain of +2 video amplifier channel with greater than 425MHz large-signal bandwidth (4VPP). Gain accuracy and switching glitch are improved over earlier solutions using a new input stage switching approach. This technique uses current steering as the input switch while maintaining an overall closed-loop design. With greater than 700MHz small-signal bandwidth at a gain of 2, the OPA875 gives a typical 0.1dB gain flatness to greater than 200MHz. System power may be reduced using the chip enable feature for the OPA875. Taking the chip enable line high powers down the OPA875 to less than 300µA total...