WMSIC Electronic Components

COSINE COS1333TRC

ModelCOS1333TRC
PackageSOT-23-5
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 26+

Available for RFQ

Technical data

Product details

19 specifications

Core information

Product name
COSINE COS1333TRC
Type
COSINE
Minimum package
3000 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
COSINE
Electronic Component
COS1333TRC
Electronic Component
1
Package
SOT-23-5
Electronic Component
Precision Op Amp
Electronic Component
0.046g
Electronic Component
1
Electronic Component
Output
Features
Built-in; /; positions
Electronic Component
BM0264547322
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.

COS1333TRC 精密单路运算放大器 产品概述

COS1333TRC 是 COSINE(科山芯创)面向低功耗精密测量与便携仪器市场推出的一款零漂(自动稳零)单路运放。器件在微功耗条件下保持极低输入失调与噪声,配合轨到轨输入/输出特性,适用于对直流精度和低频噪声有严格要求的传感器前端与数据采集系统。产品采用 SOT-23-5 小封装,便于空间受限的板级集成。

一、核心特点

  • 单路放大器,SOT-23-5 封装,节省 PCB 面积;品牌:COSINE(科山芯创)。
  • 电源范围:
    • 单电源:1.8 V ~ 5.5 V
    • 双电源:±0.9 V ~ ±2.75 V(对应 Vee~Vcc)
  • 零漂/自动稳零架构,内置补偿,实现长期高精度直流测量。
  • 轨到轨输入与轨到轨输出,扩大输入/输出动态范围,便于与低电压电源和 ADC 直接接口。
  • 反相位输入保护,增强实际系统中输入异常条件下的抗破坏能力。

二、主要电气参数(典型/最大)

  • 输入失调电压 (Vos):100 μV
  • 输入失调电压温漂 (Vos TC):5 nV/℃(零漂架构带来极低温漂)
  • 增益带宽积 (GBW):350 kHz
  • 压摆率 (SR):0.2 V/μs(适合低频精密应用)
  • 共模抑制比 (CMRR):120 dB(高直流抑制能力)
  • 输入电压噪声密度 (eN):70 nV/√Hz @ 1 kHz(低频噪声表现优秀)
  • 输入偏置电流 (Ib):25 pA;输入失调电流 (Ios):10 pA(极低漏入电流,利于高阻传感器)
  • 静态电流 (Iq):18 μA(超低功耗)
  • 输出驱动能力:典型 7 mA(适合驱动高阻负载或后级缓冲)
  • 工作温度范围:-40 ℃ ~ +125 ℃

三、优势与典型应用

优势概述:

  • 极低失调与失调漂移,减少开机和长期校准需求;
  • 低噪声、低偏流,适合高阻传感器(例如热电偶、电阻应变片、霍尔传感器);
  • 宽电源范围与轨到轨特性,易于供电和与单电池系统配合;
  • 微功耗(Iq≈18 μA),适合电池供电和便携式设备。

典型应用场景:

  • 精密仪表放大器与差分信号放大器前端
  • 低频滤波器、积分器与仪表级缓冲
  • 温度/压力/应变传感器信号调理
  • 采集系统 ADC 驱动、参考缓冲与偏置电路
  • 医疗便携设备、手持测试仪与工业现场传感单元

四、使用建议与布局要点

  • 电源旁路:推荐在 VCC 与 GND 之间放置 0.1 μF 陶瓷旁路电容,靠近引脚布局以抑制高频噪声;若系统对低频纹波敏感,可并联 1 μF~10 μF 低 ESR 电容。
  • 输入保护:尽管器件内置反相位输入保护,但在可能出现高压或电流冲击的环境(如接线错误)下,建议加外部限流电阻或 TVS/二极管保护以延长可靠性。
  • 增益与稳定性:器件为内置补偿的稳定放大器,常规电压跟随器与低至中等增益应用可直接使用;在使用大反馈电容或极高增益时,注意校验相位裕度和瞬态响应。
  • 低噪布线:针对高阻传感器输入,应缩短并屏蔽输入导线,避免噪声拾取。对于高阻节点采用 guarding 技术可进一步降低偏流影响。
  • 热与散热:SOT-23-5 小封装散热有限,长时间大电流运行或靠近热源时注意 PCB 散热设计。

五、封装与订购信息

  • 型号:COS1333TRC
  • 封装:SOT-23-5
  • 品牌:COSINE(科山芯创)
  • 推荐订购时注明封装与温度等级,确保满足 -40 ℃ ~ +125 ℃ 的工业级应用要求。

总结:COS1333TRC 在保持微功耗的同时提供极低的直流误差与噪声,适合对精度与稳定性有严格要求且空间受限的便携或嵌入式测量系统。其轨到轨特性和宽电源范围使之成为传感器前端与 ADC 接口的理想选择,但在需要高带宽或大输出驱动的场合需评估其 GBW 和输出电流能力。若需具体电路示例或参数测量曲线,可提供进一步支持。

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