WMSIC Electronic Components

COSINE COS4333TRA

ModelCOS4333TRA
PackageTSSOP-14
BrandCOSINE
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 25+

Available for RFQ

Technical data

Product details

19 specifications

Core information

Product name
COSINE COS4333TRA
Type
COSINE
Minimum package
4000 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
COSINE
Electronic Component
COS4333TRA
Electronic Component
1
Package
TSSOP-14
Electronic Component
Precision Op Amp
Electronic Component
0.16g
Electronic Component
1
Electronic Component
Output
Features
Built-in; /; positions
Electronic Component
BM0265013192
Operating Temperature
40℃~+125℃
Amplifier
Electronic Component
Output Current
7mA
(SR)
0.2V/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.

COS4333TRA 产品概述

一、产品简介

COS4333TRA 是科山芯创(COSINE)推出的一款四路精密运算放大器,集成零漂移(自动稳零)技术与内部补偿,提供极低的输入失调与失调漂移,并具备轨到轨输入/输出能力与反相位输入保护。器件封装为 TSSOP-14,适用于对直流精度和低频噪声有较高要求的测量与数据采集系统,同时兼顾低功耗与宽电源范围,适配电池供电和工业级电源系统。

二、主要规格亮点

  • 放大器数量:4 路
  • 电源范围:单电源 1.8 V ~ 5.5 V;双电源工作时单轨范围 ±0.9 V ~ ±2.75 V(对应总差 1.8 V~5.5 V)
  • 输入失调电压 (Vos):典型 50 μV
  • 失调电压温漂 (Vos TC):5 nV/℃(典型)
  • 增益带宽积 (GBW):350 kHz
  • 压摆率 (SR):0.2 V/μs
  • 共模抑制比 (CMRR):120 dB
  • 轨到轨:输入与输出均为轨到轨
  • 输入电压噪声密度 (eN):70 nV/√Hz @ 1 kHz
  • 输入偏置电流 (Ib):25 pA
  • 输入失调电流 (Ios):10 pA
  • 输出电流:7 mA
  • 静态电流 (Iq):18 μA(典型,详见数据手册)
  • 工作温度范围:-40 ℃ ~ +125 ℃
  • 特性:内置补偿、零漂移/自动稳零、反相位输入保护
  • 封装:TSSOP-14
  • 品牌:COSINE(科山芯创)

三、性能解读与设计要点

  • 极低的直流误差:50 μV 的输入失调与 5 nV/℃ 的温漂使 COS4333TRA 在低频和直流测量场合表现出色,适合精密传感器放大、差分信号放大和仪表放大器前端。
  • 低噪声与高 CMRR:70 nV/√Hz 的输入噪声密度结合 120 dB 的共模抑制,能在高共模干扰环境下保持良好信噪比,利于桥式传感器和低电平差分信号采集。
  • 轨到轨输入/输出:允许在接近电源轨的输入与输出范围内工作,适合低电压单电源系统与电池供电设备,减少外部偏置电路需求。
  • 带宽与速率限制:350 kHz 的 GBW 和 0.2 V/μs 的压摆率表明器件以直流与低中频精度为主,不适合高带宽或高速采样驱动场合。适用于低速滤波、缓冲和精密直流测量。
  • 输出驱动能力与功耗:7 mA 的输出能力可驱动常见采样电路和 ADC 前端;每通道典型静态电流 18 μA,适合功耗敏感的系统,但在多通道同时工作时应注意总功耗管理。

四、典型应用场景

  • 精密传感器前端(称重传感器、压力传感器、电流检测)
  • 仪器仪表与数据采集系统(低速、高精度采样)
  • 电源与电池监测电路(低电压单电源供电场景)
  • 信号调理:差分到单端转换、低通/积分滤波、缓冲放大
  • 工业自动化与医疗设备(需符合工业温度范围与长期稳定性要求)

五、封装、可靠性与温度

  • 封装:TSSOP-14,便于多路集成与占板面积优化
  • 工业温度等级:工作温度范围 -40 ℃ ~ +125 ℃,适合严苛环境应用
  • 建议在系统设计时参考完整器件数据手册进行布局与电源去耦,以保证零漂特性与噪声表现

六、使用建议与注意事项

  • 若对直流精度要求极高,建议在电路板设计中采用低漏电、低温漂的外部元件,确保输入偏置电流与失调电流对系统误差的影响最小化。
  • 由于压摆率与带宽有限,避免用于高速采样或大信号突变场合;对带有阶跃输入的系统建议添加适当的阻尼或限速网络。
  • 在单电源近地工作时,保证输入和输出没有超出器件声明的轨到轨范围;双电源使用时注意对称电源和滤波。
  • 器件包含反相位输入保护,但仍需避免输入超出供电范围造成损害,详见数据手册的绝对最大额定值与输入保护说明。

如需原理图参考、典型电路或详细电气特性曲线(温漂、噪声密度随频率变化、失调分布等),请查阅 COS4333TRA 的完整数据手册或联系科山芯创技术支持。

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