OPA820

正在供货

单位增益稳定、低噪声、电压反馈运算放大器

产品详情

Architecture Voltage FB Number of channels 1 Total supply voltage (+5 V = 5, ±5 V = 10) (min) (V) 5 Total supply voltage (+5 V = 5, ±5 V = 10) (max) (V) 12 GBW (typ) (MHz) 280 BW at Acl (MHz) 800 Acl, min spec gain (V/V) 1 Slew rate (typ) (V/µs) 240 Vn at flatband (typ) (nV√Hz) 2.5 Vn at 1 kHz (typ) (nV√Hz) 2.5 Iq per channel (typ) (mA) 5.6 Vos (offset voltage at 25°C) (max) (mV) 0.75 Rail-to-rail No Rating Catalog Operating temperature range (°C) -40 to 85 CMRR (typ) (dB) 85 Input bias current (max) (pA) 16000000 Offset drift (typ) (µV/°C) 4 Iout (typ) (mA) 110 2nd harmonic (dBc) 85 3rd harmonic (dBc) 95 Frequency of harmonic distortion measurement (MHz) 1
Architecture Voltage FB Number of channels 1 Total supply voltage (+5 V = 5, ±5 V = 10) (min) (V) 5 Total supply voltage (+5 V = 5, ±5 V = 10) (max) (V) 12 GBW (typ) (MHz) 280 BW at Acl (MHz) 800 Acl, min spec gain (V/V) 1 Slew rate (typ) (V/µs) 240 Vn at flatband (typ) (nV√Hz) 2.5 Vn at 1 kHz (typ) (nV√Hz) 2.5 Iq per channel (typ) (mA) 5.6 Vos (offset voltage at 25°C) (max) (mV) 0.75 Rail-to-rail No Rating Catalog Operating temperature range (°C) -40 to 85 CMRR (typ) (dB) 85 Input bias current (max) (pA) 16000000 Offset drift (typ) (µV/°C) 4 Iout (typ) (mA) 110 2nd harmonic (dBc) 85 3rd harmonic (dBc) 95 Frequency of harmonic distortion measurement (MHz) 1
SOIC (D) 8 29.4 mm² 4.9 x 6 SOT-23 (DBV) 5 8.12 mm² 2.9 x 2.8
  • 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
  • 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.

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.

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技术文档

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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年 12月 12日
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 英语版 2018年 1月 31日
应用手册 RLC Filter Design for ADC Interface Applications (Rev. A) 2015年 5月 13日
应用手册 Wideband Complementary Current Output DAC Single-Ended Interface (Rev. A) 2015年 5月 8日
应用手册 所选封装材料的热学和电学性质 2008年 10月 16日
应用手册 高速数据转换 英语版 2008年 10月 16日
应用手册 Noise Analysis for High Speed Op Amps (Rev. A) 2005年 1月 17日
应用手册 ADS5500, OPA695: PC Board Layout for Low Distortion High-Speed ADC Drivers 2004年 4月 22日
应用手册 Measuring Board Parasitics in High-Speed Analog Design 2003年 7月 7日

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)。

评估板

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.

用户指南: PDF
TI.com 上无现货
评估板

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。

用户指南: PDF
TI.com 上无现货
仿真模型

OPA820 PSpice Model (Rev. C)

SBOC048C.ZIP (35 KB) - PSpice Model
仿真模型

OPA820 TINA-TI Reference Design (Rev. A)

SBOC094A.TSC (58 KB) - TINA-TI Reference Design
仿真模型

OPA820 TINA-TI Spice Model

SBOM176.TSM (4 KB) - TINA-TI Spice Model
计算工具

ANALOG-ENGINEER-CALC PC software analog engineer's calculator

The analog engineer’s calculator is designed to speed up many of the repetitive calculations that analog circuit design engineers use on a regular basis. This PC-based tool provides a graphical interface with a list of various common calculations ranging from setting operational-amplifier (...)

支持的产品和硬件

支持的产品和硬件

计算工具

VOLT-DIVIDER-CALC — Voltage divider calculation tool

The voltage divider calculation tool (VOLT-DIVIDER-CALC) quickly determines a set of resistors for a voltage divider. This KnowledgeBase JavaScript utility can be used to find a set of resistors for a voltage divider to achieve the desired output voltage. VOLT-DIVIDER-CALC can also be used to (...)
模拟工具

PSPICE-FOR-TI — PSpice® for TI 设计和仿真工具

PSpice® for TI 可提供帮助评估模拟电路功能的设计和仿真环境。此功能齐全的设计和仿真套件使用 Cadence® 的模拟分析引擎。PSpice for TI 可免费使用,包括业内超大的模型库之一,涵盖我们的模拟和电源产品系列以及精选的模拟行为模型。

借助 PSpice for TI 的设计和仿真环境及其内置的模型库,您可对复杂的混合信号设计进行仿真。创建完整的终端设备设计和原型解决方案,然后再进行布局和制造,可缩短产品上市时间并降低开发成本。 

在 PSpice for TI 设计和仿真工具中,您可以搜索 TI (...)
模拟工具

TINA-TI — 基于 SPICE 的模拟仿真程序

TINA-TI 提供了 SPICE 所有的传统直流、瞬态和频域分析以及更多。TINA 具有广泛的后处理功能,允许您按照希望的方式设置结果的格式。虚拟仪器允许您选择输入波形、探针电路节点电压和波形。TINA 的原理图捕获非常直观 - 真正的“快速入门”。

TINA-TI 安装需要大约 500MB。直接安装,如果想卸载也很容易。我们相信您肯定会爱不释手。

TINA 是德州仪器 (TI) 专有的 DesignSoft 产品。该免费版本具有完整的功能,但不支持完整版 TINA 所提供的某些其他功能。

如需获取可用 TINA-TI 模型的完整列表,请参阅:SpiceRack - 完整列表 

需要 HSpice (...)

用户指南: PDF
英语版 (Rev.A): PDF
封装 引脚 CAD 符号、封装和 3D 模型
SOIC (D) 8 Ultra Librarian
SOT-23 (DBV) 5 Ultra Librarian

订购和质量

包含信息:
  • RoHS
  • REACH
  • 器件标识
  • 引脚镀层/焊球材料
  • MSL 等级/回流焊峰值温度
  • MTBF/时基故障估算
  • 材料成分
  • 鉴定摘要
  • 持续可靠性监测
包含信息:
  • 制造厂地点
  • 封装厂地点

支持和培训

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