WMSIC Electronic Components

Slkor LMV358

ModelLMV358
PackageSOP-8
BrandSLKOR
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
Slkor LMV358
Type
SLKOR
Minimum package
2500 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
SLKOR
Electronic Component
LMV358
Electronic Component
1
Package
SOP-8
Electronic Component
Operational Amplifier
Electronic Component
0.19g
Electronic Component
1
Features
Built-in
Electronic Component
BM0230012849
Operating Temperature
40℃~+85℃
Amplifier
2
Output Current
40mA
(SR)
300V/ms
Power Supply Voltage
3V~5.5V
Static Current(Iq)
430uA

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

LMV358(Slkor 萨科微)产品概述

LMV358 是一款双路低功耗运算放大器,适用于电池供电与便携式电子系统的通用信号调理场合。该器件在单电源 3V~5.5V 范围内工作,具有较高的共模抑制比和较低的噪声密度,性能均衡,封装为 SOP-8,便于 PCB 布局与批量生产。

一、主要电气参数概览

  • 放大器形式:双路(Dual)
  • 电源范围:单电源 3V ~ 5.5V(最大电源差 Vdd−Vss = 5.5V)
  • 静态电流(Iq):约 430 μA(器件典型静态电流)
  • 增益带宽积(GBP):1 MHz
  • 压摆率(SR):0.3 V/μs(等于 300 V/ms)
  • 共模抑制比(CMRR):80 dB
  • 输入失调电压(Vos):7 mV(典型)
  • 输入偏置电流(Ib):500 nA
  • 输入失调电流(Ios):150 nA
  • 噪声密度(eN):40 nV/√Hz @ 1 kHz
  • 输出能力:典型峰值输出电流 40 mA
  • 工作温度范围:-40 ℃ ~ +85 ℃
  • 封装:SOP-8(双列直插 / 表面封装兼容)

二、主要特性与优势

  • 低电压单电源工作,适合 3.3V 或 5V 系统,便于与微控制器和 ADC 直接配合。
  • 低静态电流(约 430 μA),利于延长电池供电设备的续航。
  • 较高的共模抑制(80 dB)和较低噪声(40 nV/√Hz),适合做传感器前端、低频信号放大。
  • 中等增益带宽(1 MHz)与有限的压摆率(0.3 V/μs),在稳态精度与中低速信号处理中表现良好。
  • 输出电流可达 40 mA,可直接驱动较小负载或实现简单传感器驱动。

三、典型应用场景

  • 传感器信号调理(温度、压力、光电等模拟前端)
  • 低功耗便携式仪器与数据采集前端
  • 低通/高通/带通有源滤波器(中低频带)
  • 电压比较与简单驱动(非高速或精密比较场合)
  • 增益缓冲、差分信号转换与电平变换(在电压范围允许的条件下)

四、设计与使用建议

  • 电源去耦:建议在器件 Vcc 与 GND 之间靠近引脚放置 0.1 μF 陶瓷去耦电容,抑制高频振荡与供电噪声。
  • 对于高增益应用:GBP 为 1 MHz,若闭环增益为 10,则闭环带宽约 100 kHz;若需要更高带宽或更快暂态响应,应选择更高 GBP / 更大 SR 的放大器。
  • 偏置电流影响:输入偏置电流约 500 nA,若输入源阻抗较高(例如 >100 kΩ),建议在输入端做偏置补偿或使用低偏置电流器件。
  • 输入失调与漂移:典型 Vos 为 7 mV,若需要更高精度可通过外部偏置调整或采用后端校准算法。
  • 输出驱动与负载:器件可提供最高约 40 mA 输出电流,但在大电流输出时需注意功耗与热耗散,避免长期在大负载下工作导致温升。
  • 布局建议:信号线短且对称,模拟地尽量单点接地,敏感输入远离数字开关与大电流回路。

五、封装与环境适应

  • 常见封装 SOP-8,便于自动贴片与手工焊接。
  • 温度范围 -40 ℃ ~ +85 ℃,适合工业级应用,但在极端环境下仍需关注漂移和长期稳定性。

六、注意事项

  • 输入与输出的电压摆幅(是否轨到轨)应在系统设计时验证;若要求接近电源轨的输入/输出性能较高,应通过实际测量确认。
  • 噪声与误差预算:在低频测量与高精度场合,需同时考虑 Vos、Ib、eN 与电源噪声的综合影响。
  • 若用于高速脉冲或高带宽放大,受限于 SR 与 GBP,应评估阶跃响应与失真。

结论:Slkor(萨科微)标注的 LMV358 是一款性能均衡、低功耗的双路运放,适合中低频、便携与工业通用信号调理场合。设计时应结合 GBP、SR 与偏置电流等参数对系统带宽、稳定性与精度进行权衡,并做好布局与电源去耦以获得最佳性能。

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