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运算放大器 (op amps)
精密运算放大器 (Vos<1mV)

OPA2187

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零漂移（10µV、0.001µV/°C）、适用于多路复用器、低功耗、RRO、CMOS 精密运算放大器（双通道）

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数据表

OPA2187

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产品详情

Number of channels 2 Total supply voltage (+5 V = 5, ±5 V = 10) (max) (V) 36 Total supply voltage (+5 V = 5, ±5 V = 10) (min) (V) 4.5 Vos (offset voltage at 25°C) (max) (mV) 0.01 Offset drift (typ) (µV/°C) 0.001 Input bias current (max) (pA) 350 GBW (typ) (MHz) 0.55 Features EMI Hardened, Zero Drift Slew rate (typ) (V/µs) 0.2 Rail-to-rail In to V-, Out Iq per channel (typ) (mA) 0.1 Vn at 1 kHz (typ) (nV√Hz) 20 CMRR (typ) (dB) 145 Rating Catalog Operating temperature range (°C) -40 to 125 Iout (typ) (A) 0.02 Architecture CMOS Input common mode headroom (to negative supply) (typ) (V) -0.1 Input common mode headroom (to positive supply) (typ) (V) -2 Output swing headroom (to negative supply) (typ) (V) 0.015 Output swing headroom (to positive supply) (typ) (V) -0.015 THD + N at 1 kHz (typ) (%) 0.035
Number of channels 2 Total supply voltage (+5 V = 5, ±5 V = 10) (max) (V) 36 Total supply voltage (+5 V = 5, ±5 V = 10) (min) (V) 4.5 Vos (offset voltage at 25°C) (max) (mV) 0.01 Offset drift (typ) (µV/°C) 0.001 Input bias current (max) (pA) 350 GBW (typ) (MHz) 0.55 Features EMI Hardened, Zero Drift Slew rate (typ) (V/µs) 0.2 Rail-to-rail In to V-, Out Iq per channel (typ) (mA) 0.1 Vn at 1 kHz (typ) (nV√Hz) 20 CMRR (typ) (dB) 145 Rating Catalog Operating temperature range (°C) -40 to 125 Iout (typ) (A) 0.02 Architecture CMOS Input common mode headroom (to negative supply) (typ) (V) -0.1 Input common mode headroom (to positive supply) (typ) (V) -2 Output swing headroom (to negative supply) (typ) (V) 0.015 Output swing headroom (to positive supply) (typ) (V) -0.015 THD + N at 1 kHz (typ) (%) 0.035
SOIC (D) 8 29.4 mm² (4.9 mm × 6 mm) VSSOP (DGK) 8 14.7 mm² (3 mm × 4.9 mm)
  • Low offset voltage: 10 µV (maximum)
  • Zero drift: 0.001 µV/°C
  • Low noise: 15 nV/√Hz
  • PSRR: 160 dB
  • CMRR: 140 dB
  • AOL: 160 dB
  • Quiescent Current: 100 µA
  • Wide supply voltage: ±2.25 V to ±18 V
  • Rail-to-rail output operation
  • Input includes negative rail
  • Low bias current: 100 pA (typical)
  • EMI filtered inputs
  • Microsize packages
  • Low offset voltage: 10 µV (maximum)
  • Zero drift: 0.001 µV/°C
  • Low noise: 15 nV/√Hz
  • PSRR: 160 dB
  • CMRR: 140 dB
  • AOL: 160 dB
  • Quiescent Current: 100 µA
  • Wide supply voltage: ±2.25 V to ±18 V
  • Rail-to-rail output operation
  • Input includes negative rail
  • Low bias current: 100 pA (typical)
  • EMI filtered inputs
  • Microsize packages

The OPAx187 series operational amplifiers use auto-zeroing techniques to simultaneously provide low-offset voltage (1 µV), and near zero drift over time and temperature. These miniature, high-precision, low-quiescent current amplifiers offer high-input impedance and rail-to-rail output swing within 5 mV of the rails into high-impedance loads. The input common-mode range includes the negative rail. Either single or dual supplies can be used in the range of 4.5 V to 36 V (±2.25 V to ±18 V).

The single version OPAx187 device is available in microsize 8-pin VSSOP, 5-pin SOT-23, and 8-pin SOIC packages. The dual version is offered in 8-pin VSSOP and 8-pin SOIC packages. The quad version is offered in 14-pin SOIC, 14-pin TSSOP, and 16-pin WQFN packages. All versions are specified for operation from –40°C to +125°C.

 

The OPAx187 series operational amplifiers use auto-zeroing techniques to simultaneously provide low-offset voltage (1 µV), and near zero drift over time and temperature. These miniature, high-precision, low-quiescent current amplifiers offer high-input impedance and rail-to-rail output swing within 5 mV of the rails into high-impedance loads. The input common-mode range includes the negative rail. Either single or dual supplies can be used in the range of 4.5 V to 36 V (±2.25 V to ±18 V).

The single version OPAx187 device is available in microsize 8-pin VSSOP, 5-pin SOT-23, and 8-pin SOIC packages. The dual version is offered in 8-pin VSSOP and 8-pin SOIC packages. The quad version is offered in 14-pin SOIC, 14-pin TSSOP, and 16-pin WQFN packages. All versions are specified for operation from –40°C to +125°C.

 
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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 OPAx187 0.001-µV/°C Drift, Low Power, Rail-to-Rail Output 36-V Operational Amplifiers Zero-Drift Series 数据表 (Rev. E) PDF | HTML 2020-5-21
应用简报 失调电压校正方法：激光修整、e-Trim™ 和斩波器 (Rev. D) PDF | HTML 英语版 (Rev.D) PDF | HTML 2024-12-18
应用简报 零漂移放大器：特性和优势 (Rev. C) PDF | HTML 英语版 (Rev.C) 2021-5-25
应用简报 使用零偏移、耐电磁干扰、精密放大器最大程度降低体重秤错误 (Rev. A) PDF | HTML 2020-12-8
应用简报 EMI-Hardened Op Amps Reduce Errors in EKGs (Rev. A) 2019-8-21
应用简报 Green-Williams-Lis：改进的运算放大器 Spice 模型 英语版 2019-4-4
应用简报 How to Properly Configure Unused Operational Amplifiers (Rev. A) 2018-9-21
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

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

AMP-PDK-EVM — 放大器高性能开发套件评估模块

放大器高性能开发套件 (PDK) 是一款用于测试常见运算放大器参数的评估模块 (EVM) 套件，与大多数运算放大器和比较器均兼容。该 EVM 套件提供了一个主板，主板上具有多个插槽式子卡选项以满足封装需求，使工程师能够快速评估和验证器件性能。

AMP-PDK-EVM 套件支持五种常用的业界通用封装，包括：

  • D（SOIC-8 和 SOIC-14）
  • PW (TSSOP-14)
  • DGK (VSSOP-8)
  • DBV（SOT23-5 和 SOT23-6）
  • DCK（SC70-5 和 SC70-6）
用户指南: PDF | HTML
支持的产品和硬件
仿真模型

OPAx187 PSpice Model (Rev. C)

SBOMAB6C.ZIP (32 KB) - PSpice 模型
支持的产品和硬件
仿真模型

OPAx187 TINA-TI Reference Design (Rev. C)

SBOMAB5C (331 KB) - TINA-TI 参考设计
支持的产品和硬件
仿真模型

OPAx187 TINA-TI Spice Model (Rev. C)

SBOMAB4C.ZIP (11 KB) - TINA-TI Spice 模型
支持的产品和硬件
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。

支持的产品和硬件
计算工具

OPAMP-NOISECALC — Noise Calculator

This folder contains three tools to help in understandning and managing noise in cicuits. The included tools are:

  • A noise generator tool - This is a Lab View 4-Run Time executable that generates Gaussian white noise, uniform white noise, 1/f noise, short noise, and 60Hz line noise. Temporal data, (...)
支持的产品和硬件
封装 引脚 CAD 符号、封装和 3D 模型
SOIC (D) 8 Ultra Librarian
VSSOP (DGK) 8 Ultra Librarian
适用于评估类项目的 TI 标准条款与条件。

订购和质量

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