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OPA361-Q1

更新时间： 2024-02-07 02:52:41
品牌 Logo 应用领域
德州仪器 - TI 视频放大器
页数 文件大小 规格书
18页 533K
描述
3V Video Amplifier with Internal Gain and Filter in SC70

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OPA361-Q1  
www.ti.com  
SBOS552 –MARCH 2011  
3V Video Amplifier with Internal Gain and Filter in SC70  
Check for Samples: OPA361-Q1  
1
FEATURES  
DESCRIPTION  
The OPA361-Q1 high-speed amplifier is optimized for  
3V portable video applications. It is specifically  
designed to be compatible with the video encoders  
embedded in Texas Instruments’ OMAP2420 and  
DaVinci processors or other application processors  
with 0.5VPP video output. The input common-mode  
range includes GND, which allows a video-DAC  
(digital-to-analog converter) to be DC-coupled to the  
OPA361-Q1. The TV-detection feature simplifies the  
end-user interface significantly by facilitating the  
automatic start/stop of video transmission.  
•
•
•
•
•
Qualified for Automotive Applications  
Excellent Video Performance  
Internal Gain: 5.2V/V  
Supports TV-Detection  
Compatible with OMAP242x and  
DAVINCI™ Processors  
•
•
2-Pole Reconstruction Filter  
Input Range Includes Ground  
–
DC-Coupled Input  
The output swings within 5mV of GND and 250mV to  
V+ with a standard back-terminated video load  
(150Ω). An internal level shift circuit prevents the  
output from saturating with 0V input, thus preventing  
sync-pulse clipping in common video circuits.  
Therefore, the OPA361-Q1 is ideally suited for  
DC-coupling to the video load.  
•
Integrated Level Shifter  
–
–
DC-Coupled Output(1)  
No Output Capacitors Needed  
•
•
•
•
•
Rail-to-Rail Output  
Low Quiescent Current: 5.3mA  
Shutdown Current: 1.5µA  
Single-Supply: 2.5V to 3.3V  
SC70-6 Package: 2.0mm × 2.1mm  
RoHS Compliant  
The OPA361-Q1 has  
been optimized for  
space-sensitive applications by integrating internal  
gain setting resistors (G = 5.2V/V) and a 2-pole  
video-DAC reconstruction filter.  
•
(1)  
In shutdown mode, the quiescent current is reduced  
to < 1.5µA, dramatically reducing power consumption  
and prolonging battery life.  
Internal circuitry avoids output saturation, even with 0V sync  
tip level at the input video signal.  
V+  
The OPA361-Q1 is available in the tiny 2mm ×  
2.1mm SC70-6 package.  
OPA361  
10mV  
2-Pole  
+In  
75Ω  
Filter  
Out  
Ω
500  
RSET  
Ω
4k  
G =5.2V/V  
Shutdown  
Control  
(see note 1)  
Enable  
GND  
(1) Closed when enabled during normal  
operation; open when shut down.  
1
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.  
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 © 2011, Texas Instruments Incorporated  
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