OPA361
- 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
- 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 x 2.1mm
- RoHS COMPLIANT
- APPLICATIONS
- CAMERA PHONES
(1) Internal circuitry avoids output saturation, even with 0V sync tip
level at the input video signal.
DAVINCI is a registered trademark of Texas Instruments. All other trademarks are the property of their respective owners.
The OPA361 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. The TV-detection feature simplifies the end-user interface significantly by facilitating the automatic start/stop of video transmission.
The output swings within 5mV of GND and 250mV to V+ with a standard back-terminated video load (150
). 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 is ideally suited for DC-coupling to the video load.
The OPA361 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.
In shutdown mode, the quiescent current is reduced to < 1.5µA, dramatically reducing power consumption and prolonging battery life.
The OPA361 is available in the tiny 2mm x 2.1mm SC70-6 package.
技術文件
| 重要文件 | 類型 | 標題 | 格式選項 | 下載最新的英文版本 | 日期 | |
|---|---|---|---|---|---|---|
| * | 資料表 | 3V Video Amplifier with Internal Gain and Filter in SC70 datasheet (Rev. A) | 2006/2/1 | |||
| 應用說明 | OPA361 and TV Detection | 2008/6/29 |
設計與開發
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ANALOG-ENGINEER-CALC — PC software analog engineer's calculator
類比工程師的計算機旨在加速類比電路設計工程師定期使用的許多重複計算。此基於 PC 的工具提供圖形介面，列出各種常見計算，從使用回饋電阻器設定運算放大器增益到選擇適當的電路設計元件以穩定類比數位轉換器 (ADC) 驅動緩衝電路。
除了作為獨立工具使用外，此計算機還與類比工程師口袋參考中描述的概念相得益彰。
| 封裝 | 針腳 | CAD 符號、佔位空間與 3D 模型 |
|---|---|---|
| SOT-SC70 (DCK) | 6 | Ultra Librarian |