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运算放大器 (op amps)
高速运算放大器 (GBW ≥ 50MHz)

OPA2810

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双通道、高性能、27V、105MHz、RRIO FET 输入运算放大器

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OPA2810

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产品详情

Architecture FET / CMOS Input, Voltage FB Number of channels 2 Total supply voltage (+5 V = 5, ±5 V = 10) (min) (V) 4.75 Total supply voltage (+5 V = 5, ±5 V = 10) (max) (V) 27 GBW (typ) (MHz) 70 BW at Acl (MHz) 105 Acl, min spec gain (V/V) 1 Slew rate (typ) (V/µs) 192 Vn at flatband (typ) (nV√Hz) 6 Vn at 1 kHz (typ) (nV√Hz) 16.43 Iq per channel (typ) (mA) 3.6 Vos (offset voltage at 25°C) (max) (mV) 1.5 Rail-to-rail In, Out Features C-Load Drive Rating Catalog Operating temperature range (°C) -40 to 125 CMRR (typ) (dB) 100 Input bias current (max) (pA) 20 Offset drift (typ) (µV/°C) 2 Iout (typ) (mA) 75 2nd harmonic (dBc) 99 3rd harmonic (dBc) 104 Frequency of harmonic distortion measurement (MHz) 1
Architecture FET / CMOS Input, Voltage FB Number of channels 2 Total supply voltage (+5 V = 5, ±5 V = 10) (min) (V) 4.75 Total supply voltage (+5 V = 5, ±5 V = 10) (max) (V) 27 GBW (typ) (MHz) 70 BW at Acl (MHz) 105 Acl, min spec gain (V/V) 1 Slew rate (typ) (V/µs) 192 Vn at flatband (typ) (nV√Hz) 6 Vn at 1 kHz (typ) (nV√Hz) 16.43 Iq per channel (typ) (mA) 3.6 Vos (offset voltage at 25°C) (max) (mV) 1.5 Rail-to-rail In, Out Features C-Load Drive Rating Catalog Operating temperature range (°C) -40 to 125 CMRR (typ) (dB) 100 Input bias current (max) (pA) 20 Offset drift (typ) (µV/°C) 2 Iout (typ) (mA) 75 2nd harmonic (dBc) 99 3rd harmonic (dBc) 104 Frequency of harmonic distortion measurement (MHz) 1
VSSOP (DGK) 8 14.7 mm² (3 mm × 4.9 mm) SOT-23 (DCN) 8 4.64 mm² (2.9 mm × 1.6 mm) SOIC (D) 8 29.4 mm² (4.9 mm × 6 mm)
  • Gain-bandwidth product: 70 MHz
  • Small-signal bandwidth: 105 MHz
  • Slew rate: 192 V/µs
  • Wide supply range: 4.75 V to 27 V
  • Low noise:
    • Input voltage noise: 6 nV/√Hz (f = 500 kHz)
    • Input current noise: 5 fA/√Hz (f = 10 kHz)
  • Rail-to-rail input and output:
    • FET input stage: 2-pA input bias current (typical)
    • High linear output current: 75 mA
  • Input offset: ±1.5 mV (maximum)
  • Offset drift: ±2 µV/°C (typical)
  • Low power: 3.6 mA/channel
  • Extended temperature operation:
    –40°C to +125°C
  • Single-channel version: OPA810
  • Gain-bandwidth product: 70 MHz
  • Small-signal bandwidth: 105 MHz
  • Slew rate: 192 V/µs
  • Wide supply range: 4.75 V to 27 V
  • Low noise:
    • Input voltage noise: 6 nV/√Hz (f = 500 kHz)
    • Input current noise: 5 fA/√Hz (f = 10 kHz)
  • Rail-to-rail input and output:
    • FET input stage: 2-pA input bias current (typical)
    • High linear output current: 75 mA
  • Input offset: ±1.5 mV (maximum)
  • Offset drift: ±2 µV/°C (typical)
  • Low power: 3.6 mA/channel
  • Extended temperature operation:
    –40°C to +125°C
  • Single-channel version: OPA810

The OPA2810 is a dual-channel, FET-input, voltage-feedback operational amplifier with low input bias current. The OPA2810 is unity-gain stable with a small-signal unity-gain bandwidth of 105 MHz, and offers excellent DC precision and dynamic AC performance at a low quiescent current (IQ) of 3.6 mA per channel (typical). The OPA2810 is fabricated on Texas Instrument’s proprietary, high-speed SiGe BiCMOS process and achieves significant performance improvements over comparable FET-input amplifiers at similar levels of quiescent power. With a gain-bandwidth product (GBWP) of 70 MHz, slew-rate of 192 V/µs, and voltage low noise of 6 nV/√Hz, the OPA2810 is well suited for use in a wide range of high fidelity data acquisition and signal processing applications.

The OPA2810 is characterized to operate over a wide supply range of 4.75 V to 27 V, and features rail-to-rail inputs and outputs. The OPA2810 amplifier delivers 75 mA of linear output current, suitable for driving optoelectronics components and analog-to-digital converter (ADC) inputs or buffering DAC outputs into heavy loads.

The OPA2810 is available in 8-pin SOIC, SOT23, and VSSOP packages and is rated to work over the extended industrial temperature range of –40°C to +125°C. The OPA810 is a single-channel variant of this device, available in 8-pin SOIC and 5-pin SOT-23 and SC70 packages.

The OPA2810 is a dual-channel, FET-input, voltage-feedback operational amplifier with low input bias current. The OPA2810 is unity-gain stable with a small-signal unity-gain bandwidth of 105 MHz, and offers excellent DC precision and dynamic AC performance at a low quiescent current (IQ) of 3.6 mA per channel (typical). The OPA2810 is fabricated on Texas Instrument’s proprietary, high-speed SiGe BiCMOS process and achieves significant performance improvements over comparable FET-input amplifiers at similar levels of quiescent power. With a gain-bandwidth product (GBWP) of 70 MHz, slew-rate of 192 V/µs, and voltage low noise of 6 nV/√Hz, the OPA2810 is well suited for use in a wide range of high fidelity data acquisition and signal processing applications.

The OPA2810 is characterized to operate over a wide supply range of 4.75 V to 27 V, and features rail-to-rail inputs and outputs. The OPA2810 amplifier delivers 75 mA of linear output current, suitable for driving optoelectronics components and analog-to-digital converter (ADC) inputs or buffering DAC outputs into heavy loads.

The OPA2810 is available in 8-pin SOIC, SOT23, and VSSOP packages and is rated to work over the extended industrial temperature range of –40°C to +125°C. The OPA810 is a single-channel variant of this device, available in 8-pin SOIC and 5-pin SOT-23 and SC70 packages.
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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 OPA2810 Dual-Channel, 27-V, Rail-to-Rail Input/Output FET-Input Operational Amplifier 数据表 (Rev. C) PDF | HTML 2020-2-11
产品概述 用于体外诊断 (IVD) 模拟前端的高速放大器 PDF | HTML 英语版 PDF | HTML 2025-4-11
应用简报 优化 LCR 表前端设计以实现精确的阻抗测量 PDF | HTML 英语版 PDF | HTML 2022-5-19
设计指南 适合高阻抗应用的级联高增益有源 LPF 参考设计 (Rev. B) 英语版 (Rev.B) PDF | HTML 2019-10-29
应用简报 Pairing up Op Amp and Buffer for Higher Output Power Plus Speed in ATE 2019-6-7
技术文章 What are the advantages of using JFET-input amplifiers in high-speed applications? PDF | HTML 2018-6-19

设计与开发

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评估板

OPA2810DGKEVM — OPA2810 FET 输入、电压反馈运算放大器评估模块

OPA2810DGKEVM 是一款适用于双通道 OPA2810 放大器的评估模块 (EVM)，采用 DGK (VSSOP-8) 封装。OPA2810 是一个FET 输入、低输入偏置电流的电压反馈运算放大器。OPA2810DGKEVM 旨在快速简便地演示放大器的功能和通用性。此 EVM 可随时通过板载连接器与电源、信号源和测试仪表相连。此 EVM 已配置为可通过其输入端和输出端与常见的 50Ω 实验室设备轻松连接。每个放大器都配置为单端输入，并且器件输出端具有 1V/V 的非反相信号增益。OPA2810DGKEVM 的每个放大器都有 2kΩ 的总板载负载。输出电阻器网络会将输出转换为 50Ω (...)
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仿真模型

OPA2810 for PSPICE Library

SBOMB66.ZIP (16 KB) - PSpice 模型
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仿真模型

OPA2810 Model for Curated PSpice Library (Rev. A)

SBOMB78A.ZIP (33 KB) - PSpice 模型
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仿真模型

OPA2810 TINA-TI Reference Design (Rev. B)

SBOMAM2B (2389 KB) - TINA-TI 参考设计
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仿真模型

OPA2810 TINA-TI Spice Model (Rev. A)

SBOMAM3A.ZIP (9 KB) - TINA-TI Spice 模型
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计算工具

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。

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参考设计

TIDA-060021 — 适合高阻抗应用的级联高增益有源低通滤波器参考设计

此设计使用 OPA2810 高速放大器来提供两个具有 1MHz 截止频率的多反馈 (MFB) 低通滤波器电路板。四阶电路板可提供具有高增益和陡峭滚降的四阶滤波器。高阻抗电路板 (High-Z) 是一种二阶滤波器，专门用于前一级中具有大输出阻抗的系统。此参考设计中的两种电路板均为工程师提供了专注于尽可能降低噪声和失真的高增益、宽电源范围滤波器。
支持的产品和硬件
参考设计

TIDA-060029 — LCR 表模拟前端参考设计

此参考设计 TIDA-060029 展示了采用自主平衡阻抗测量方法且适用于 LCR 表应用的模拟信号链解决方案。
支持的产品和硬件
封装 引脚 CAD 符号、封装和 3D 模型
VSSOP (DGK) 8 Ultra Librarian
SOT-23 (DCN) 8 Ultra Librarian
SOIC (D) 8 Ultra Librarian
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