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OPA875IDG4 PDF预览

OPA875IDG4

更新时间: 2024-11-23 04:11:47
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21页 689K
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Single 2:1 High-Speed Video Multiplexer

OPA875IDG4 数据手册

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OPA875  
SBOS340DECEMBER 2006  
Single 2:1 High-Speed Video Multiplexer  
FEATURES  
DESCRIPTION  
700MHz SMALL-SIGNAL BANDWIDTH  
(AV = +2)  
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 > 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  
> 700MHz small-signal bandwidth at a gain of 2, the  
OPA875 gives a typical 0.1dB gain flatness to  
> 200MHz.  
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  
System power may be reduced using the chip enable  
feature for the OPA875. Taking the chip enable line  
high powers down the OPA875 to < 300µA total  
supply current. Muxing multiple OPA875 outputs  
together, then using the chip enable to select which  
channels are active, increases the number of  
possible inputs.  
RGB SWITCHING  
LCD PROJECTOR INPUT SELECT  
WORKSTATION GRAPHICS  
ADC INPUT MUX  
DROP-IN UPGRADE TO LT1675-1  
Where three channels are required, consider using  
the OPA3875 for the same level of performance.  
EN  
Ch 0  
75W  
75W  
75W  
OPA875  
(Patented)  
Out  
OPA875 RELATED PRODUCTS  
DESCRIPTION  
Ch 1  
SEL  
Channel Select  
OPA3875  
OPA692  
OPA693  
Triple-Channel OPA875  
225MHz Video Buffer  
700MHz Video Buffer  
2:1 Video Multiplexer  
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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