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运算放大器 (op amps)
精密运算放大器 (Vos<1mV)

OPA335

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单路、0.05uV/°C（最大值）、单电源 CMOS 运算放大器

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数据表

OPA335

正在供货
数据表 立即订购

产品详情

Number of channels 1 Total supply voltage (+5 V = 5, ±5 V = 10) (max) (V) 5.5 Total supply voltage (+5 V = 5, ±5 V = 10) (min) (V) 2.7 Vos (offset voltage at 25°C) (max) (mV) 0.005 Offset drift (typ) (µV/°C) 0.02 Input bias current (max) (pA) 200 GBW (typ) (MHz) 2 Features EMI Hardened, Zero Drift Slew rate (typ) (V/µs) 1.6 Rail-to-rail In to V-, Out Iq per channel (typ) (mA) 0.285 Vn at 1 kHz (typ) (nV√Hz) 60 CMRR (typ) (dB) 130 Rating Catalog Operating temperature range (°C) -40 to 125 Iout (typ) (A) 0.05 Architecture CMOS Input common mode headroom (to negative supply) (typ) (V) -0.1 Input common mode headroom (to positive supply) (typ) (V) -1.5 Output swing headroom (to negative supply) (typ) (V) 0.015 Output swing headroom (to positive supply) (typ) (V) -0.015
Number of channels 1 Total supply voltage (+5 V = 5, ±5 V = 10) (max) (V) 5.5 Total supply voltage (+5 V = 5, ±5 V = 10) (min) (V) 2.7 Vos (offset voltage at 25°C) (max) (mV) 0.005 Offset drift (typ) (µV/°C) 0.02 Input bias current (max) (pA) 200 GBW (typ) (MHz) 2 Features EMI Hardened, Zero Drift Slew rate (typ) (V/µs) 1.6 Rail-to-rail In to V-, Out Iq per channel (typ) (mA) 0.285 Vn at 1 kHz (typ) (nV√Hz) 60 CMRR (typ) (dB) 130 Rating Catalog Operating temperature range (°C) -40 to 125 Iout (typ) (A) 0.05 Architecture CMOS Input common mode headroom (to negative supply) (typ) (V) -0.1 Input common mode headroom (to positive supply) (typ) (V) -1.5 Output swing headroom (to negative supply) (typ) (V) 0.015 Output swing headroom (to positive supply) (typ) (V) -0.015
SOT-23 (DBV) 5 8.12 mm² (2.9 mm × 2.8 mm) SOIC (D) 8 29.4 mm² (4.9 mm × 6 mm)
  • LOW OFFSET VOLTAGE:5 µV (max)
  • ZERO DRIFT: 0.05 µV/°C (max)
  • QUIESCENT CURRENT: 285 µA
  • SINGLE-SUPPLY OPERATION
  • SINGLE AND DUAL VERSIONS
  • SHUTDOWN
  • MicroSIZE PACKAGES
  • APPLICATIONS
    • TRANSDUCER APPLICATIONS
    • TEMPERATURE MEASUREMENT
    • ELECTRONIC SCALES
    • MEDICAL INSTRUMENTATION
    • BATTERY-POWERED INSTRUMENTS
    • HANDHELD TEST EQUIPMENT

All trademarks are the property of their respective owners.
  • LOW OFFSET VOLTAGE:5 µV (max)
  • ZERO DRIFT: 0.05 µV/°C (max)
  • QUIESCENT CURRENT: 285 µA
  • SINGLE-SUPPLY OPERATION
  • SINGLE AND DUAL VERSIONS
  • SHUTDOWN
  • MicroSIZE PACKAGES
  • APPLICATIONS
    • TRANSDUCER APPLICATIONS
    • TEMPERATURE MEASUREMENT
    • ELECTRONIC SCALES
    • MEDICAL INSTRUMENTATION
    • BATTERY-POWERED INSTRUMENTS
    • HANDHELD TEST EQUIPMENT

All trademarks are the property of their respective owners.

The OPA334 and OPA335 series of CMOS operational amplifiers use auto-zeroing techniques to simultaneously provide very low offset voltage (5µV max), 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. Single or dual supplies as low as +2.7V (±1.35V) and up to +5.5V (±2.75V) may be used. These op amps are optimized for low-voltage, single-supply operation.

The OPA334 family includes a shutdown mode. Under logic control, the amplifiers can be switched from normal operation to a standby current of 2µA. When the Enable pin is connected high, the amplifier is active. Connecting Enable low disables the amplifier, and places the output in a high impedance state.

The OPA334 (single version with shutdown) comes in MicroSIZE SOT23-6. The OPA335 (single version without shutdown) is available in SOT23-5, and SO-8. The OPA2334 (dual version with shutdown) comes in MicroSIZE MSOP-10. The OPA2335 (dual version without shutdown) is offered in the MSOP-8 and SO-8 packages. All versions are specified for operation from –40°C to +125°C.

The OPA334 and OPA335 series of CMOS operational amplifiers use auto-zeroing techniques to simultaneously provide very low offset voltage (5µV max), 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. Single or dual supplies as low as +2.7V (±1.35V) and up to +5.5V (±2.75V) may be used. These op amps are optimized for low-voltage, single-supply operation.

The OPA334 family includes a shutdown mode. Under logic control, the amplifiers can be switched from normal operation to a standby current of 2µA. When the Enable pin is connected high, the amplifier is active. Connecting Enable low disables the amplifier, and places the output in a high impedance state.

The OPA334 (single version with shutdown) comes in MicroSIZE SOT23-6. The OPA335 (single version without shutdown) is available in SOT23-5, and SO-8. The OPA2334 (dual version with shutdown) comes in MicroSIZE MSOP-10. The OPA2335 (dual version without shutdown) is offered in the MSOP-8 and SO-8 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 0.05uV/C max, Single-Supply CMOS Op Amps Zero-Drift 数据表 (Rev. D) 2003-6-12
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
电路设计 单端输入转差分输出电路 (Rev. B) PDF | HTML 英语版 (Rev.B) PDF | HTML 2024-10-30
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
技术文章 How to design an infrared thermometer quickly PDF | HTML 2020-4-7
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 High-Voltage Signal Conditioning for Low-Voltage ADCs (Rev. B) PDF | HTML 2015-5-18
应用手册 OPA334, OPA2334, OPA335, OPA2335 EMI Immunity Performance (Rev. A) 2012-10-31
模拟设计期刊 使您的仪器放大器设计达到最佳效果 英语版 2006-7-13
应用手册 High-Voltage Signal Conditioning for Differential ADCs 2004-6-14

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

OPAx335 PSpice Model (Rev. F)

SBOC002F.ZIP (28 KB) - PSpice 模型
支持的产品和硬件
仿真模型

OPAx335 TINA-TI Reference Design (Rev. D)

SBOM746D (347 KB) - TINA-TI 参考设计
支持的产品和硬件
仿真模型

OPAx335 TINA-TI Spice Model (Rev. D)

SBOM745D.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
设计工具

CIRCUIT060061 — 单端输入转差动输出电路

该电路可利用 2.7V 的单电源将 0.1V 至 2.4V 的单端输入转换为 ±2.3V 的差动输出。可以根据需要调节输入和输出级，只要符合运算放大器输入共模范围和输出摆幅限制即可。
支持的产品和硬件
设计工具

SBOC510 — Simulation for Single-Ended Input to Differential Output

支持的产品和硬件
参考设计

TIDA-01504 — 采用 HART® 调制解调器的高精度环路供电式 4mA-20mA 现场变送器参考设计

此参考设计为采用 HART® 调制解调器的环路供电型高精度现场（传感器）变送器提供了一种解决方案。此设计使用了部分分立的 4mA 至 20mA 电流发送器、HART 调制解调器、微控制器和功率调节块来实现智能现场变送器设计。此设计符合 HART FSK 物理层规范，并已向 FieldComm Group™ 注册。

支持的产品和硬件
封装 引脚 CAD 符号、封装和 3D 模型
SOT-23 (DBV) 5 Ultra Librarian
SOIC (D) 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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支持和培训

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