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OPA4872

Burr-Brown
Part Number OPA4872
Manufacturer Burr-Brown
Description Triple 2:1 High-Speed Video Multiplexer
Published Jun 1, 2007
Detailed Description BurrĆBrown Products from Texas Instruments OPA3875 SBOS341B – DECEMBER 2006 – REVISED DECEMBER 2006 Triple 2:1 High-Sp...
Datasheet PDF File OPA4872 PDF File

OPA4872
OPA4872

Overview
BurrĆBrown Products from Texas Instruments OPA3875 SBOS341B – DECEMBER 2006 – REVISED DECEMBER 2006 Triple 2:1 High-Speed Video Multiplexer FEATURES • • • • • • • • • • • • • 700MHz SMALL-SIGNAL BANDWIDTH (AV = +2) 425MHz, 4VPP BANDWIDTH 0.
1dB GAIN FLATNESS to 150MHz 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% DESCRIPTION The OPA3875 offers a very wideband, 3-channel, 2:1 multiplexer in a small SSOP-16 package.
Using only 11mA/ch, the OPA3875 provides three, gain of +2, video amplifier channels with > 400MHz large-signal bandwidth (4VPP).
Gain accuracy and switching glitch are improved over earlier solutions using a new (patented) input stage switching approach.
This technique uses current steering as the input switch while maintaining an overall closed-loop design.
Gain matching between each of the 3-channel pairs is also significantly improved using this technique (<0.
2% gain mismatch).
With >700MHz small-signal bandwidth at a gain of 2, the OPA3875 gives a typical 0.
1dB gain flatness to > 150MHz.
System power may be reduced using the chip enable feature for the OPA3875.
Taking the chip enable line high powers down the OPA3875 to <900µA total supply current.
Muxing multiple OPA3875 outputs together, then using the chip enable to select which channels are active, increases the number of possible inputs to the 3-channel outputs.
Where a single channel of the OPA3875 is required, consider the OPA875.
OPA3875 SELECT 1 75W APPLICATIONS RGB SWITCHING LCD PROJECTOR INPUT SELECT WORKSTATION GRAPHICS TRIPLE ADC INPUT MUX DROP-IN UPGRADE TO LT1675 +5V 75W RGB Channel 0 75W 75W ENABLE 0 0 1 RED OUT GREEN OUT R0 R1 Off G0 G1 Off BLUE OUT B0 B1 Off 75W OPA3875 (Patented) RGB Out 0 X 75W RGB Channel 1 75W OPA3875 RELATED PRODUCTS 75W DESCRIPTION OPA875 OPA4872 OPA3693 Single-Channel OPA3875 Quad 510MHz 4:1 Multiplexer Triple 650MHz Video Buffer 75W -5V Channel...


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