OPA846
- HIGH BANDWIDTH: 400MHz (G = +10)
- LOW INPUT VOLTAGE NOISE: 1.2nV/√Hz
- VERY LOW DISTORTION: –100dBc (5MHz)
- HIGH SLEW RATE: 625V/µs
- HIGH DC ACCURACY: VIO ±150µV
- LOW SUPPLY CURRENT: 12.6mA
- HIGH GAIN BANDWIDTH PRODUCT: 1750MHz
- STABLE FOR GAINS ≥ 7
- APPLICATIONS
- HIGH DYNAMIC RANGE ADC PREAMPS
- LOW–NOISE, WIDEBAND, TRANSIMPEDANCE AMPLIFIERS
- WIDEBAND, HIGH GAIN AMPLIFIERS
- LOW–NOISE DIFFERENTIAL RECEIVERS
- VDSL LINE RECEIVERS
- ULTRASOUND CHANNEL AMPLIFIERS
- SECURITY SENSOR FRONT ENDS
- UPGRADE FOR THE OPA686, CLC425, AND LMH6624
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The OPA846 combines very high gain bandwidth and large signal performance with very low input voltage noise, while dissipating a low 12.6mA supply current. The classical differential input stage, along with two stages of forward gain and a high power output stage, combine to make the OPA846 an exceptionally low distortion amplifier with excellent DC accuracy and output drive. The voltage-feedback architecture allows all standard op amp applications to be implemented with very high performance.
The combination of low input voltage and current noise, along with a 1.75GHz gain bandwidth product, make the OPA846 an ideal amplifier for wideband transimpedance stages. As a voltage gain stage, the OPA846 is optimized for a flat response at a gain of +10 and is stable down to a gain of +7.
A new external compensation technique can be used to give a very flat frequency response below the minimum stable gain for the OPA846, further improving its already exceptional distortion performance. Using this compensation makes the OPA846 one of the premier 12– to 16–bit Analog–to–Digital (A/D) converter input drivers. The supply current for the OPA846 is precisely trimmed to 12.6mA at +25°C. This, along with carefully defined supply current tempco in the input and output stages, combine to provide exceptional performance over the full specified temperature range.
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 | Wideband, Low Noise, Voltage-Feedback Operational Amplifier datasheet (Rev. E) | 2008/12/30 | |||
| 電子書 | The Signal e-book: A compendium of blog posts on op amp design topics | PDF | HTML | 2017/3/28 | |||
| 使用指南 | DEM-OPA-SO-1A User's Guide (Rev. B) | 2012/4/12 | ||||
| 使用指南 | DEM-OPA-SO-1B User's Guide (Rev. D) | 2012/4/12 | ||||
| 使用指南 | DEM-OPA-SOT-1A User's Guide (Rev. B) | 2012/4/12 | ||||
| 應用說明 | Transimpedance Considerations for High-Speed Operational Amplifiers | 2009/11/22 | ||||
| 使用指南 | DEM-OPA-SOT-1B User's Guide (Rev. B) | 2006/4/12 | ||||
| 類比設計期刊 | Using a decompensated op amp for improved performance | 2005/3/11 | ||||
| 應用說明 | Noise Analysis for High Speed Op Amps (Rev. A) | 2005/1/17 | ||||
| 應用說明 | ADS5500, OPA695: PC Board Layout for Low Distortion High-Speed ADC Drivers | 2004/4/22 | ||||
| 應用說明 | Measuring Board Parasitics in High-Speed Analog Design | 2003/7/7 |
設計與開發
如需其他條款或必要資源，請按一下下方的任何標題以檢視詳細頁面 (如有)。
DEM-OPA-SO-1B — 適用於 SO-8 (非反相) 封裝的單路運算放大器評估模組
The DEM-OPA-SO-1B demonstration fixture in the non-inverting configuration helps designers evaluate the operation and performance of TI's single high speed, wideband operational amplifiers. This unpopulated PC board is compatible with products offered in the 8-lead SOIC (D) package.
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DEM-OPA-SOT-1B — 適用於 SOT23-5/6 (非反相) 封裝的單路運算放大器評估模組
The DEM-OPA-SOT-1B demonstration fixture in the non-inverting configuration helps designers evaluate the operation and performance of TI's single high speed, wideband operational amplifiers. This unpopulated PC board is compatible with products offered in the SOT23 (DBV) package.
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 |
|---|---|---|
| SOIC (D) | 8 | Ultra Librarian |
| SOT-23 (DBV) | 5 | Ultra Librarian |