OPA4820
- HIGH BANDWIDTH: 220MHz (G = +2)
- HIGH OUTPUT CURRENT: ±85mA
- LOW INPUT NOISE: 2.5nV/
Hz - LOW SUPPLY CURRENT: 5.7mA/ch
- FLEXIBLE SUPPLY VOLTAGE:
±2V to ±6.3V Dual Supply
+4V to +12.6V Single Supply - EXCELLENT DC ACCURACY:
- Maximum 25°C Input Offset Voltage = 0.8mV
- Maximum 25°C Input Offset Current = 500nA
- APPLICATIONS
- LOW–COST VIDEO LINE DRIVERS
- ADC PREAMPS
- ACTIVE FILTERS
- LOW–NOISE INTEGRATORS
- PORTABLE TEST EQUIPMENT
- OPTICAL CHANNEL AMPLIFIERS
- LOW–POWER, BASEBAND AMPLIFIERS
- CCD IMAGING CHANNEL AMPLIFIERS
- OPA4650 UPGRADE
All trademarks are the property of their respective owners.
The OPA4820 provides a wideband, unity-gain stable, voltage-feedback amplifier with a very low input noise voltage and high output current using a low 5.7mA/ch supply current. At unity-gain, the OPA4820 gives > 600MHz bandwidth with < 1 dB peaking. The OPA4820 complements this high-speed operation with excellent DC precision in a low-power device. A worst-case input offset voltage of ±0.8mV and an offset current of ±500nA give excellent absolute DC precision for pulse amplifier applications.
Minimal input and output voltage swing headroom allow the OPA4820 to operate on a single +5V supply with > 2VPP output swing. While not a rail-to-rail (RR) output, this swing will support 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%/0.03°) supports low-cost composite video line driver applications. Existing designs can use the industry-standard quad pinout SO-14 package while emerging high-density portable applications can use the TSSOP-14.
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 | Quad, Unity-Gain, Low-Noise, Voltage-Feedback Operational Amplifier 数据表 (Rev. D) | 2008-8-28 | |||
| 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 | ||||
| 用户指南 | DEM-OPA-SO-4A User's Guide (Rev. B) | 2008-11-26 | ||||
| 用户指南 | DEM-OPA-TSSOP-4A User's Guide (Rev. C) | 2008-8-12 | ||||
| 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-4A — 采用 SO-14 封装的四路运算放大器通用评估模块
DEM-OPA-SO-4A 演示装置是通用的未组装印刷电路板 (PCB)，用于评估 TI 采用 SO-14 (DDB) 封装的四路高速运算放大器的运行情况和性能。
DEM-OPA-TSSOP-4A — 采用 TSSOP-14 封装的四路运算放大器评估模块
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) | 14 | Ultra Librarian |
| TSSOP (PW) | 14 | Ultra Librarian |