WMSIC Electronic Components

Hangzhou Ruimeng MS358

ModelMS358
PackageSOP-8
BrandElectronic Component
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 24+

Available for RFQ

Technical data

Product details

19 specifications

Core information

Product name
MS358
Type
Relmon
Minimum package
2500 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
Electronic Component
Electronic Component
MS358
Electronic Component
1
Package
SOP-8
Electronic Component
Operational Amplifier
Electronic Component
0.199g
Electronic Component
1
Electronic Component
BM0264756952
Operating Temperature
40℃~+85℃
Amplifier
2
Output Current
30mA
(SR)
400V/ms
Power Supply Voltage
2.5V~36V
Static Current(Iq)
430uA
Electronic Component
Electronic Component

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

MS358 产品概述

一、概述

MS358 是杭州瑞盟推出的一款双通道通用运算放大器,封装为 SOP-8。器件在单电源 2.5V~36V 范围内工作,最大电源差 Vdd–Vss 为 36V,适合宽电源轨设计与电池供电系统。该器件具有低失调、低噪声和低静态电流的组合特性,针对低频精密放大与传感器前端等应用进行了优化。

二、主要性能亮点

  • 增益带宽积(GBW):1 MHz,适合低频到中频信号处理。
  • 压摆率(SR):0.4 V/µs(400 V/ms),支持中等速率的信号跃变。
  • 输入失调电压(Vos):3 mV,温漂(Vos TC):9 µV/℃,在直流精密测量中表现良好。
  • 输入偏置电流(Ib):30 nA,输入失调电流(Ios):5 nA,适合高阻抗传感元件接口。
  • 输入电压噪声密度(eN):60 nV/√Hz @1 kHz,满足大多数低频模拟信号的噪声要求。
  • 共模抑制比(CMRR):85 dB,保证差模测量时的精度。
  • 静态电流(Iq):430 µA(双路),在功耗与性能之间取得平衡。
  • 单路输出电流可达 30 mA,驱动小负载、继电器驱动前级或 LED 驱动器等均可胜任。
  • 工作温度范围:-40 ℃ ~ +85 ℃,适用于工业级环境。

三、典型应用场景

  • 传感器前端放大(温度、压力、应变计等),利用低失调与低温漂提升测量稳定性。
  • 工业控制与数据采集的缓冲与差分测量电路。
  • 低功耗便携式仪器的前置放大与滤波。
  • 低频信号处理与有源滤波器(Sallen–Key、仿真阻抗电路等)。
  • 对于不要求高速、大幅度带宽的音频前置或信号调理电路也可采用。

四、设计与使用建议

  • 电源去耦:建议在每个放大器电源引脚附近并行放置 0.1 µF 陶瓷与 10 µF 电解/钽电容,以抑制高频和低频电源噪声。
  • 稳定性:对于驱动容性负载(长电缆或 ADC 输入),建议串联小电阻(10Ω~50Ω)在输出端或在反馈回路中增加相应补偿,避免振荡。
  • 直流精密测量:若需更低的失调,可使用外部偏置调整或配对漂移补偿电路。
  • 布局注意:将敏感输入走线短且靠近地回流,减小输入噪声与共模干扰。

五、封装与可靠性

MS358 提供 SOP-8 封装,便于通用 PCB 设计与散热管理。器件额定工作温度为 -40 ℃ 至 +85 ℃,满足多数工业与商用应用的温度要求。封装引脚标准化,便于替换与批量生产。

六、选型理由与对比参考

选择 MS358 的主要理由是其在低功耗(Iq 430 µA)、良好直流精度(Vos 3 mV、Vos TC 9 µV/℃)与宽电源范围(2.5V~36V)之间达到平衡,适合多种通用模拟前端场景。若应用需要更高带宽或更快压摆率,应考虑高速放大器;若更关注超低噪声或超低失调,可选择更高端的精密放大器。总体而言,MS358 在成本、性能和通用性方面具有很高的性价比。

如需参考电路原理或具体典型应用电路(如差分放大、同相跟随、低通滤波器),可提供更详细的电路图与参数计算。

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