WMSIC Electronic Components

HGSEMI OPA333M5/TR OPA333M5

ModelOPA333M5/TR
PackageSOT-23-5
BrandHGSEMI
Price Price on request Electronic component prices change quickly with market supply and demand. Please refer to the latest WMSIC quotation for current pricing.
Configuration
1 options
Configuration 26+

Available for RFQ

Technical data

Product details

19 specifications

Core information

Product name
HGSEMI OPA333M5 / TR
Type
HGSEMI
Minimum package
3000 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
HGSEMI
Electronic Component
OPA333M5/TR
Electronic Component
1
Package
SOT-23-5
Electronic Component
Precision Op Amp
Electronic Component
0.049g
Electronic Component
1
Electronic Component
Output
Features
EMI / RF; Built-in; /; positions
Electronic Component
BM0227688668
Operating Temperature
40℃~+85℃
Amplifier
Electronic Component
Output Current
5mA
(SR)
0.16V/us
Power Supply Voltage
1.8V~5.5V

For datasheets, package documents, compatible-part guidance, or other technical resources, contact WMSIC customer service. Availability is confirmed case by case.

OPA333M5/TR 产品概述

一、概述

OPA333M5/TR(品牌:HGSEMI/华冠,封装:SOT-23-5)是一款面向低频精密测量的单通道运算放大器。器件具备极低的输入失调(Vos=2μV)与出色的共模抑制(CMRR=115dB)、低噪声(eN=55nV/√Hz@1kHz),并支持轨到轨输入与轨到轨输出,适合电池供电和便携式精密信号链。

二、主要特点

  • 极低失调与漂移:Vos=2μV,温漂Vos TC=20nV/℃,适合长期高精度测量。
  • 低噪声:55nV/√Hz(1kHz),有利于低幅度信号的放大。
  • 宽电源范围:单电源工作1.8V~5.5V,最大电源间幅度5.5V。
  • 轨到轨输入/输出:可利用全量程动态范围,提高系统利用率。
  • 超低静态电流:Iq=17μA,适合低功耗与电池供电场合。
  • 高CMRR与低偏置:CMRR=115dB,输入偏置电流Ib=70pA,输入偏移电流Ios=140pA。
  • 频率特性与驱动能力:增益带宽积GBP=350kHz,压摆率SR=0.16V/μs,输出电流约5mA,适合直流与低频应用。

三、典型应用场景

  • 精密传感器前端:热电偶、热敏电阻、桥式压力/力传感器放大。
  • ADC 驱动与基准缓冲:用于低速高精度模数转换器输入缓冲。
  • 电池供电手持设备与便携式测量仪表。
  • 直流/低频滤波器与积分器、精密比较放大器(非高速场合)。

四、设计建议与注意事项

  • 电源去耦:在靠近器件的电源引脚放置0.1μF陶瓷去耦电容以抑制噪声与瞬态。
  • 保护与输入阻抗:由于低偏置电流特性最好避免长导线与高阻源直连;高源阻抗会放大偏置电流与噪声影响。
  • 带宽与稳定性:GBP=350kHz且SR较小,因此适合低增益或低频放大;若驱动容性负载(ADC采样电容、长线),建议在输出串联小阻抗(几十欧姆)以保证稳定。
  • 热与封装:SOT-23-5 封装散热受限,额定环境温度-40℃~+85℃,在高温或高功耗场合注意PCB散热与布局。
  • 精密级校准:若需实现最高精度,建议进行系统级偏置与漂移校准,并避免温度梯度影响放大器附近元件。

五、选型与采购提示

  • 型号:OPA333M5/TR,TR通常表示带卷盘包装(Tape & Reel),便于贴片生产。
  • 若需更高带宽或更大输出驱动,请比较其他型号(更高GBP或更大SR/输出电流的放大器)。
  • 使用前请参考华冠完整数据手册,确认引脚排列、电气极限与封装尺寸,并按推荐外围电路进行设计与实验验证。

OPA333M5/TR以其出色的直流精度、低噪声与低功耗特性,适合各类精密低频测量场合;在系统设计中合理处理去耦、源阻与负载条件,可以获得最佳测量性能。

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