WMSIC Electronic Components

COSINE COS1177SR

ModelCOS1177SR
PackageSOP-8
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 COS1177SR
Type
COSINE
Minimum package
4000 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
COSINE
Electronic Component
COS1177SR
Electronic Component
1
Package
SOP-8
Electronic Component
Precision Op Amp
Electronic Component
0.213g
Electronic Component
1
Features
Built-in
Electronic Component
BM0265013185
Operating Temperature
40℃~+125℃
Amplifier
Electronic Component
(SR)
0.7V/us
Power Supply Voltage
5V~36V
Static Current(Iq)
330uA
Power Supply(Vee~Vcc)
2.5V~18V;-18V~-2.5V

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

COS1177SR — 精密单路运算放大器产品概述

一、产品简介

COS1177SR 是 COSINE(科山芯创)推出的一款高精度单路运算放大器,面向精密测量与信号调理应用。器件采用内置补偿结构,具备极低的输入失调电压和低噪声特性,同时在宽电源电压范围内稳定工作,适合各种工业级与仪器级设计需求。

二、主要规格亮点

  • 放大器通道:单路
  • 电源范围:单电源 5V ~ 36V;双电源对称范围 ±2.5V ~ ±18V
  • 输入失调电压 (Vos):50 µV(典型)
  • 温度漂移 (Vos TC):200 nV/℃
  • 增益带宽积 (GBW):2 MHz
  • 压摆率 (SR):0.7 V/µs
  • 共模抑制比 (CMRR):125 dB
  • 输入电压噪声密度 (eN):8 nV/√Hz @ 1 kHz
  • 输入偏置电流 (Ib):1 nA
  • 输入失调电流 (Ios):200 pA
  • 静态电流 (Iq):330 µA
  • 工作温度范围:-40 ℃ ~ +125 ℃
  • 封装:SOP-8

三、关键功能与优势

  • 极低失调与低漂移:50 µV 的输入失调电压与 200 nV/℃ 的温漂,使 COS1177SR 在直流精度要求高的仪表、传感器前端和精密参考缓冲场合表现优异。
  • 低噪声与高 CMRR:8 nV/√Hz 的噪声密度和 125 dB 的共模抑制比,有利于保持信号完整性,降低系统误差,适合低电平信号放大。
  • 宽电源兼容性:支持 5V 至 36V 单电源以及 ±2.5V 至 ±18V 双电源配置,便于与不同供电系统集成,尤其适合需要较高电源裕量的工业与传感应用。
  • 内置补偿与保护:器件内置补偿,保证单位增益稳定性并简化外部电路设计;同时具备过压保护,提高系统可靠性。
  • 低偏置与低功耗:1 nA 的输入偏置电流和 330 µA 的静态电流使其在高阻抗传感器接口和电池供电系统中具有良好的表现与能耗平衡。

四、典型应用场景

  • 精密数据采集与测量仪器(低漂移放大、精密缓冲)
  • 传感器调理(热电偶、压力、差分电阻桥等)
  • 工业自动化与过程控制的信号调理模块
  • 医疗设备前端放大(需注意按医疗规范进行系统级验证)
  • 精密参考与补偿电路

五、设计与使用建议

  • 电源与去耦:为发挥最佳噪声与稳定性表现,建议在靠近供电引脚处使用低 ESR 陶瓷电容进行旁路,常见为 0.1 µF 与 10 µF 的组合。
  • 高阻输入布局:针对 1 nA 量级的偏置电流与皮安级失调电流,布板时注意尽量缩短输入回路长度、使用防污塞孔和护环接地以降低泄漏与杂散电流影响。
  • 驱动容性负载:若需驱动较大容性负载,建议在输出端加小阻抗隔离或使用缓冲级,以保证稳定性与防止振荡。
  • 输入保护:尽管器件具备过压保护,极端条件下仍建议在应用端增加限流或浪涌保护电路以保护器件与系统安全。
  • 温度漂移管理:在高精度系统中,应结合温度补偿或校准策略最大限度利用其低漂移特性。

六、封装与订购信息

  • 型号:COS1177SR
  • 品牌:COSINE(科山芯创)
  • 封装:SOP-8,便于插装与表面贴装工艺兼容,利于量产与维护

COS1177SR 以其低失调、低噪声和宽电源兼容性,适合对精度和可靠性有较高要求的各种模拟前端设计。若需更多应用电路、典型特性曲线或样片获取建议联系 COSINE(科山芯创)技术支持。

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