OPA820
- High Bandwidth (240 MHz, G = 2)
- High-Output Current (±110 mA)
- Low-Input Noise (2.5 nV/√Hz)
- Low-Supply Current (5.6 mA)
- Flexible Supply Voltage:
- Dual ±2.5 V to ±6 V
- Single 5 V to 12 V
- Excellent DC Accuracy:
- Maximum 25°C Input Offset Voltage = ±750 µV
- Maximum 25°C Input Offset Current = ±400 nA
The OPA820 device provides a wideband, unity-gain stable, voltage-feedback amplifier with a very-low input-noise voltage and high-output current using a low 5.6-mA supply current. At unity-gain, the OPA820 device gives more than 800-MHz bandwidth with less than 1-dB peaking. The OPA820 device complements this high-speed operation with excellent DC precision in a low-power device. A worst-case input-offset voltage of ±750 µV and an offset current of ±400 nA provide excellent absolute DC precision for pulse amplifier applications.
Minimal input and output voltage-swing headroom allow the OPA820 device to operate on a single 5-V supply with more than 2-VPP output swing. While not a rail-to-rail (RR) output, this swing supports most emerging analog-to-digital converter (ADC) input ranges with lower power and noise than typical RR output op amps.
Exceptionally low dG/dP (0.01% or 0.03°) supports low-cost composite-video line-driver applications. Existing designs can use the industry-standard pinout, 8-pin SOIC package while emerging high-density portable applications can use the 5-pin SOT-23. Offering the lowest thermal impedance of the industry in a SOT package, along with full specification over both the commercial and industrial temperature ranges, provides solid performance over a wide 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 | OPA820 Unity-Gain Stable, Low-Noise, Voltage-Feedback Operational Amplifier 数据表 (Rev. D) | PDF | HTML | 2016-12-12 | ||
| 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 | |
| 应用手册 | RLC Filter Design for ADC Interface Applications (Rev. A) | 2015-5-13 | ||||
| 应用手册 | Wideband Complementary Current Output DAC Single-Ended Interface (Rev. A) | 2015-5-8 | ||||
| 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-1A — 采用 SO-8 封装的单路运算放大器评估模块
The DEM-OPA-SO-1A demonstration fixture helps designers evaluate the operation and performance of TI's High Speed, Wide Bandwidth Operational Amplifiers. This unpopulated PC board is compatible with products offered in the 8-lead SOIC (D) package.
DEM-OPA-SOT-1A — 采用 5 引脚和 6 引脚 SOT-23 封装的单路运算放大器评估模块
DEM-OPA-SOT-1A 是一款用于评估高速高带宽运算放大器运行情况和性能的演示板。这款未组装的 PC 板与采用 small-outline transistor (SOT) DBV 封装的产品兼容。
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 |
|---|---|---|
| SOT-23 (DBV) | 5 | Ultra Librarian |
| SOIC (D) | 8 | Ultra Librarian |