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COSINE COS2177MR/U COS2177MR
Configuration
1 options
Configuration
26+
Available for RFQ
Technical data
Product details
19
specifications
Core information
- Product name
- COSINE COS2177MR / U
- Type
- MSOP-8
- Minimum package
- 3000 圆盘
Technical parameters
- Electronic Component
- Electronic Component
- Electronic Component
- COSINE
- Electronic Component
- COS2177MR/U
- Electronic Component
- 1
- Package
- MSOP-8
- Electronic Component
- Precision Op Amp
- Electronic Component
- 0.16g
- Electronic Component
- 1
- Features
- Built-in
- Electronic Component
- BM0265013189
- Operating Temperature
- 40℃~+85℃
- Amplifier
- Electronic Component
- Output Current
- 28mA
- (SR)
- 0.7V/us
- Static Current(Iq)
- 330uA
- Power Supply(Vee~Vcc)
- 18V~-2.25V；2.25V~18V
For datasheets, package documents, compatible-part guidance, or other technical resources, contact WMSIC customer service. Availability is confirmed case by case.
COS2177MR/U — 精密双路运算放大器产品概述
一、产品概述
COS2177MR/U 是科山芯创（COSINE）推出的高精度双路运算放大器，集低失调、低噪声与低功耗于一体。器件采用 MSOP-8 封装，内置补偿保证单器件在单位增益下稳定工作，并具备过压保护，适合工业级与仪器级的精密信号调理场合。工作温度范围宽（-40℃ 至 +85℃），适配多种复杂环境。
二、主要性能亮点
- 极低输入失调电压：Vos = 50 μV，适合高精度直流测量与零点放大。
- 低失调电压温漂：Vos TC = 200 nV/℃，在温度变化条件下保持高稳定性。
- 良好共模抑制：CMRR = 125 dB，有利于抑制共模干扰，提高测量精度。
- 低输入噪声：eN = 8 nV/√Hz @1 kHz，适合低噪声前端放大。
- 增益带宽积：GBW = 2 MHz，适用于中低频精密放大。
- 压摆率：SR = 0.7 V/μs，满足多数精密低速应用的动态响应需求。
- 低功耗静态电流：Iq = 330 μA（单通道），适合功耗敏感设计。
- 输出驱动能力：输出电流可达 28 mA，可直接驱动常见负载。
- 输入偏置/失调电流：Ib、Ios = 7 nA，利于高阻抗源信号测量。
- 宽供电范围：双电源支持 VEEVCC = -18V-2.25V 或 2.25V18V（等效单电源 4.5V36V）。
- 工业温区：工作温度 -40℃ ~ +85℃。
三、典型应用场景
- 精密仪表与数据采集模块的前置放大器
- 传感器接口与桥式传感电路（RTD、热电偶、称重传感器）
- 低噪声音频前级与滤波器
- 精密电压参考缓冲与差分放大
- 工业控制与过程控制信号调理
四、设计要点与使用建议
- 电源去耦：为保证低噪声与稳定性，建议在靠近芯片的 VCC、VEE 引脚各并联 0.1 μF 陶瓷电容与 10 μF 低 ESR 电解/钽电容进行去耦。
- 布局与走线：输入端为关键低噪声路径，尽量缩短输入引线并避免与开关电源或数字地走线并行，采用星形接地或单点接地策略减小地环路噪声。
- 输入保护：尽管芯片内置过压保护，但在可能出现高压冲击或电磁干扰的场合，建议在输入端加入限流电阻与 TVS 或二极管做额外保护。
- 温度漂移补偿：Vos TC 极低，但在超高精度系统中仍建议做定期自校准或软件补偿以获得更好长期稳定性。
- 增益与补偿：器件为内部补偿放大器，常规负反馈配置（包括单位增益跟随）均能稳定工作；在高增益或有大电容负载的场合需注意相位裕度与负载隔离。
五、封装与订购信息
- 型号：COS2177MR/U
- 品牌：COSINE（科山芯创）
- 封装：MSOP-8
- 工作温度：-40℃ ~ +85℃
COS2177MR/U 以其优异的直流精度、低噪声性能和工业级的宽电源/温区特性，适合要求高稳定性与可靠性的精密模拟前端设计。若需进一步的详细电气特性曲线、典型应用电路或 PCB 布局建议，建议查阅完整规格书或联系技术支持。
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