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.
技术文档
| 顶层文档 | 类型 | 标题 | 格式选项 | 下载最新的英语版本 | 日期 | |
|---|---|---|---|---|---|---|
| * | 数据表 | Wideband, Low Noise, Voltage-Feedback Operational Amplifier 数据表 (Rev. E) | 2008-12-30 | |||
| 电子书 | The Signal e-book: 有关运算放大器设计主题的博客文章汇编 | PDF | HTML | 英语版 | PDF | HTML | 2018-1-31 | |
| 用户指南 | DEM-OPA-SO-1A User's Guide (Rev. B) | 2012-4-12 | ||||
| 用户指南 | DEM-OPA-SO-1B User's Guide (Rev. D) | 2012-4-12 | ||||
| 用户指南 | DEM-OPA-SOT-1A User's Guide (Rev. B) | 2012-4-12 | ||||
| 应用手册 | Transimpedance Considerations for High-Speed Operational Amplifiers | 2009-11-22 | ||||
| 用户指南 | DEM-OPA-SOT-1B User's Guide (Rev. B) | 2006-4-12 | ||||
| 模拟设计期刊 | Using a decompensated op amp for improved performance | 2005-3-11 | ||||
| 应用手册 | Noise Analysis for High Speed Op Amps (Rev. A) | 2005-1-17 | ||||
| 应用手册 | ADS5500, OPA695: PC Board Layout for Low Distortion High-Speed ADC Drivers | 2004-4-22 | ||||
| 应用手册 | Measuring Board Parasitics in High-Speed Analog Design | 2003-7-7 |
设计与开发
如需其他信息或资源，请点击以下任一标题进入详情页面查看（如有）。
DEM-OPA-SO-1B — 采用 SO-8（同相）封装的单路运算放大器评估模块
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 — 采用 SOT23-5/6（同相）封装的单路运算放大器评估模块
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
模拟工程师计算器旨在加快模拟电路设计工程师经常运用的许多重复性计算。该基于 PC 的工具提供图形界面，其中显示各种常见计算列表，从使用反馈电阻器设置运算放大器增益到选择合适的电路设计元件，以稳定模数转换器 (ADC) 驱动器缓冲器电路。
除了可用作独立工具之外，该计算器还能很好地与模拟工程师口袋参考中所述的概念配合使用。
| 封装 | 引脚 | CAD 符号、封装和 3D 模型 |
|---|---|---|
| SOIC (D) | 8 | Ultra Librarian |
| SOT-23 (DBV) | 5 | Ultra Librarian |