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OPA3875IDBQG4 PDF预览

OPA3875IDBQG4

更新时间: 2024-11-04 03:03:59
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BB 复用器
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22页 615K
描述
Triple 2:1 High-Speed Video Multiplexer

OPA3875IDBQG4 数据手册

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OPA3875  
SBOS341BDECEMBER 2006REVISED DECEMBER 2006  
Triple 2:1 High-Speed Video Multiplexer  
FEATURES  
DESCRIPTION  
700MHz SMALL-SIGNAL BANDWIDTH  
(AV = +2)  
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.  
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%  
APPLICATIONS  
RGB SWITCHING  
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.  
LCD PROJECTOR INPUT SELECT  
WORKSTATION GRAPHICS  
TRIPLE ADC INPUT MUX  
DROP-IN UPGRADE TO LT1675  
+5V  
Where a single channel of the OPA3875 is required,  
consider the OPA875.  
75W  
75W  
RGB  
OPA3875  
Channel 0  
75W  
75W  
SELECT ENABLE RED OUT GREEN OUT BLUE OUT  
1
0
0
0
1
R0  
R1  
Off  
G0  
G1  
Off  
B0  
B1  
Off  
75W  
RGB  
Out  
OPA3875  
(Patented)  
X
75W  
75W  
75W  
OPA3875 RELATED PRODUCTS  
RGB  
DESCRIPTION  
75W  
Channel 1  
OPA875  
OPA4872  
OPA3693  
Single-Channel OPA3875  
Quad 510MHz 4:1 Multiplexer  
Triple 650MHz Video Buffer  
-5V  
EN  
Channel  
Select  
RGB Switching  
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas  
Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.  
All trademarks are the property of their respective owners.  
PRODUCTION DATA information is current as of publication date.  
Products conform to specifications per the terms of the Texas  
Instruments standard warranty. Production processing does not  
necessarily include testing of all parameters.  
Copyright © 2006, Texas Instruments Incorporated  

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