OPA567
- HIGH OUTPUT CURRENT: 2A
- OUTPUT SWINGS TO: 150mV of Rails with IO = 2A
- THERMAL PROTECTION
- ADJUSTABLE CURRENT LIMIT
- TWO FLAGS: Current Limit and Temperature Warning
- LOW SUPPLY VOLTAGE OPERATION: 2.7V to 5.5V
- SHUTDOWN FUNCTION WITH OUTPUT DISABLE
- SMALL POWER PACKAGE
- APPLICATIONS
- THERMOELECTRIC COOLER DRIVER
- LASER DIODE PUMP DRIVER
- VALVE, ACTUATOR DRIVER
- SYNCHRO, SERVO DRIVER
- TRANSDUCER EXCITATION
- GENERAL LINEAR POWER BOOSTER FOR OP AMPS
PowerPAD is a trademark of Texas Instruments. All other trademarks are the property of their respective owners.
The OPA567 is a low-cost, high-current, operational amplifier designed for driving a wide variety of loads while operating on low-voltage supplies. It operates from either single or dual supplies for design flexibility and has rail-to-rail swing on the input and output. Output swing is within 300mV of the supply rails, with output current of 2A. Smaller loads allow an output swing closer to the rails.
The OPA567 is unity gain stable, easy to use, and free from the phase inversion problems found in some power amplifiers. High performance is maintained at voltage swings near the output rails.
The OPA567 provides an accurate user-selected current limit set with an external resistor, or digitally adjusted via a Digital-to-Analog Converter (DAC).
The output of the OPA567 can be independently disabled using the Enable pin, saving power and protecting the load.
Two flags are provided. The current limit flag, IFLAG, warns of current limit conditions. TFLAG is a thermal flag that warns of thermal overstress. The TFLAG pin can be connected to the Enable pin to provide a thermal shutdown solution.
The OPA567 is available in a tiny 5mm x 5mm Quad Flatpack No-lead (QFN) package and features an exposed thermal pad that enhances thermal and electrical characteristics. It is small and easy to heat sink. The OPA567 is specified for operation over the industrial temperature range, -40°C to +85°C.
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 | Rail-to-Rail I/O, 2A Power Amplifier datasheet (Rev. A) | 2005/9/20 | |||
| 電子書 | The Signal e-book: A compendium of blog posts on op amp design topics | PDF | HTML | 2017/3/28 | |||
| 應用說明 | Power Amplifier Stress and Power Handling Limitations | 2000/9/27 |
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。
TIDA-00554 — 具有 Bluetooth 連線且適用於可攜式化學分析的 DLP 超行動 NIR 光譜儀
超行動近紅外線 (NIR) 光譜儀參考設計採用德州儀器的 DLP 技術，並結合單元件 InGaAs 偵測器，以可攜式外形尺寸提供高性能量測，比使用昂貴的 InGaAs 陣列偵測器或脆弱的旋轉光柵架構更加經濟實惠。此參考設計支援藍牙低功耗，可為手持式光譜儀提供行動實驗室測量功能，應用領域包括食品、農業、製藥、石油化學等。使用 TI Tiva 處理器，即可透過行動網路運用雲端資料庫進行即時實驗室等值分析，亦可用於食物或皮膚分析及可穿式健康監測解決方案。開發人員還可以透過創新的 iOS 和 Android 應用程式建立自己的資料收集和分析。
| 封裝 | 針腳 | CAD 符號、佔位空間與 3D 模型 |
|---|---|---|
| VQFN (RHG) | 12 | Ultra Librarian |