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运算放大器 (op amps)
高速运算放大器 (GBW ≥ 50MHz)

OPA2683

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超低功耗双电流反馈运算放大器

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数据表

OPA2683

正在供货
数据表 立即订购

产品详情

Architecture Current FB Number of channels 2 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) 145 BW at Acl (MHz) 145 Acl, min spec gain (V/V) 1 Slew rate (typ) (V/µs) 210 Vn at flatband (typ) (nV√Hz) 4.4 Vn at 1 kHz (typ) (nV√Hz) 4.4 Iq per channel (typ) (mA) 0.79 Vos (offset voltage at 25°C) (max) (mV) 3.5 Rail-to-rail No Features Shutdown Rating Catalog Operating temperature range (°C) -40 to 85 CMRR (typ) (dB) 56 Input bias current (max) (pA) 4000000 Offset drift (typ) (µV/°C) 12 Iout (typ) (mA) 110 2nd harmonic (dBc) 58 3rd harmonic (dBc) 68 Frequency of harmonic distortion measurement (MHz) 5
Architecture Current FB Number of channels 2 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) 145 BW at Acl (MHz) 145 Acl, min spec gain (V/V) 1 Slew rate (typ) (V/µs) 210 Vn at flatband (typ) (nV√Hz) 4.4 Vn at 1 kHz (typ) (nV√Hz) 4.4 Iq per channel (typ) (mA) 0.79 Vos (offset voltage at 25°C) (max) (mV) 3.5 Rail-to-rail No Features Shutdown Rating Catalog Operating temperature range (°C) -40 to 85 CMRR (typ) (dB) 56 Input bias current (max) (pA) 4000000 Offset drift (typ) (µV/°C) 12 Iout (typ) (mA) 110 2nd harmonic (dBc) 58 3rd harmonic (dBc) 68 Frequency of harmonic distortion measurement (MHz) 5
SOIC (D) 8 29.4 mm² 4.9 x 6 SOT-23 (DCN) 8 4.64 mm² 2.9 x 1.6 VSSOP (DGS) 10 14.7 mm² 3 x 4.9
  • REDUCED BANDWIDTH CHANGE VERSUS GAIN
  • 150MHz BANDWIDTH G = +2
  • >80MHz BANDWIDTH TO GAIN > +10
  • LOW DISTORTION: < –65dBc at 5MHz
  • HIGH OUTPUT CURRENT: 110mA
  • SINGLE-SUPPLY OPERATION: +5V to +12V
  • DUAL-SUPPLY OPERATION: ±2.5V to ±6V
  • LOW SUPPLY CURRENT: 1.9mA Total
  • POWER SHUTDOWN VERSION: MSOP-10
  • APPLICATIONS
    • LOW POWER BROADCAST VIDEO DRIVER
    • µPOWER ACTIVE FILTERS
    • SHORT LOOP ADSL CO DRIVER
    • MULTICHANNEL SUMMING AMPLIFIERS
    • PROFESSIONAL CAMERAS
    • DIFFERENTIAL ADC INPUT DRIVER

All trademarks are the property of their respective owners.
  • REDUCED BANDWIDTH CHANGE VERSUS GAIN
  • 150MHz BANDWIDTH G = +2
  • >80MHz BANDWIDTH TO GAIN > +10
  • LOW DISTORTION: < –65dBc at 5MHz
  • HIGH OUTPUT CURRENT: 110mA
  • SINGLE-SUPPLY OPERATION: +5V to +12V
  • DUAL-SUPPLY OPERATION: ±2.5V to ±6V
  • LOW SUPPLY CURRENT: 1.9mA Total
  • POWER SHUTDOWN VERSION: MSOP-10
  • APPLICATIONS
    • LOW POWER BROADCAST VIDEO DRIVER
    • µPOWER ACTIVE FILTERS
    • SHORT LOOP ADSL CO DRIVER
    • MULTICHANNEL SUMMING AMPLIFIERS
    • PROFESSIONAL CAMERAS
    • DIFFERENTIAL ADC INPUT DRIVER

All trademarks are the property of their respective owners.

The OPA2683 provides a new level of performance for dual, very low-power, wideband, current-feedback amplifiers. This CFBPLUS amplifier is among the first to use an internally closed-loop input buffer stage that significantly enhances performance over earlier low-power, current-feedback (CFB) amplifiers. This new architecture provides many of the advantages of a more ideal CFB amplifier while retaining the benefits of very low-power operation. The closed-loop input stage buffer gives a very low and linearized impedance path at the inverting input to sense the feedback error current. This improved inverting input impedance gives exceptional bandwidth retention to much higher gains and improved harmonic distortion over earlier solutions limited by inverting input linearity. Beyond simple high gain applications, the OPA2683 CFBPLUS amplifier can allow the gain setting element to be set with considerable freedom from amplifier bandwidth interaction. This flexibility allows frequency response peaking elements to be added, multiple input inverting summing circuits to have greater bandwidth, and low-power differential line drivers to meet the demanding requirements of DSL.

The output capability for the OPA2683 also sets a new mark in performance for very low-power current-feedback amplifiers. Delivering a full ±4Vpp swing on ±5V supplies, the OPA2683 also has the output current to support this swing into a 100 load. This minimal output headroom requirement is complemented by a similar 1.2V input stage headroom giving exceptional capability for single +5V operation.

The OPA2683’s low 1.9mA total supply current is precisely trimmed at +25°C. This trim, along with low shift over temperature and supply voltage, gives a very robust design over a wide range of operating conditions. Further system power reduction is possible using the shutdown feature of the MSOP-10 package.

The OPA2683 provides a new level of performance for dual, very low-power, wideband, current-feedback amplifiers. This CFBPLUS amplifier is among the first to use an internally closed-loop input buffer stage that significantly enhances performance over earlier low-power, current-feedback (CFB) amplifiers. This new architecture provides many of the advantages of a more ideal CFB amplifier while retaining the benefits of very low-power operation. The closed-loop input stage buffer gives a very low and linearized impedance path at the inverting input to sense the feedback error current. This improved inverting input impedance gives exceptional bandwidth retention to much higher gains and improved harmonic distortion over earlier solutions limited by inverting input linearity. Beyond simple high gain applications, the OPA2683 CFBPLUS amplifier can allow the gain setting element to be set with considerable freedom from amplifier bandwidth interaction. This flexibility allows frequency response peaking elements to be added, multiple input inverting summing circuits to have greater bandwidth, and low-power differential line drivers to meet the demanding requirements of DSL.

The output capability for the OPA2683 also sets a new mark in performance for very low-power current-feedback amplifiers. Delivering a full ±4Vpp swing on ±5V supplies, the OPA2683 also has the output current to support this swing into a 100 load. This minimal output headroom requirement is complemented by a similar 1.2V input stage headroom giving exceptional capability for single +5V operation.

The OPA2683’s low 1.9mA total supply current is precisely trimmed at +25°C. This trim, along with low shift over temperature and supply voltage, gives a very robust design over a wide range of operating conditions. Further system power reduction is possible using the shutdown feature of the MSOP-10 package.
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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 Very Low-Power, Dual, Current-Feedback Operational Amplifier 数据表 (Rev. H) 2009年 7月 23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
用户指南 DEM-OPA-SO-2A User's Guide (Rev. B) 2010年 4月 30日
应用手册 Wireline Data Transmission and Reception 2010年 1月 27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
用户指南 DEM-OPA-SOT-2A User's Guide (Rev. A) 2006年 5月 25日
模拟设计期刊 Expanding the usability of current-feedback amplifiers 2005年 2月 28日
模拟设计期刊 Active filters using current-feedback amplifiers 2005年 2月 25日
应用手册 Noise Analysis for High Speed Op Amps (Rev. A) 2005年 1月 17日
应用手册 Stabilizing Current-Feedback Op Amps While Optimizing Circuit Performance 2004年 4月 28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
应用手册 Current Feedback Amplifiers: Review, Stability Analysis, and Applications 2000年 11月 20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-2A — 采用 SO-8 封装的双路运算放大器评估模块

The DEM-OPA-SO-2A demonstration evaluation module helps designers evaluate the operation and performance of TI dual-channel, high-speed, wideband operational amplifiers. This unpopulated printed-circuit board (PCB) is compatible with products offered in the 8-lead SOIC (D) package.

For more (...)

用户指南: PDF
TI.com 上无现货
仿真模型

OPA2683 PSpice Model

SBOM478.ZIP (39 KB) - PSpice Model
下载
仿真模型

OPA2683 TINA-TI Reference Design (Rev. C)

SBOC241C.TSC (100 KB) - TINA-TI Reference Design
下载
仿真模型

OPA2683 TINA-TI Spice Model (Rev. A)

SBOM304A.ZIP (5 KB) - TINA-TI Spice Model
下载
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
启动 下载
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 (...)
立即设计
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 (...)
发送申请
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
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参考设计

TIDA-00025 — 低功耗全差动可编程增益放大器参考设计

使用 TI OPA2683 低功耗双通道电流反馈放大器的低功耗全差动可编程增益放大器的参考设计。此设计指南回顾了创建这类电路所需的一些设计中的挑战。设计指南回顾了结果并针对使用/设计低功耗 FDA PGA 提供了一些建议。
设计指南: PDF
原理图: PDF
封装 引脚 CAD 符号、封装和 3D 模型
SOIC (D) 8 Ultra Librarian
SOT-23 (DCN) 8 Ultra Librarian
VSSOP (DGS) 10 Ultra Librarian
适用于评估类项目的 TI 标准条款与条件。

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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