WMSIC Electronic Components

ST LM358WDT Dual Operational Amplifier LM358WDT

ModelLM358WDT
Package8-SO
BrandST
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+

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Technical data

Product details

19 specifications

Core information

Product name
ST(STMicroelectronics) LM358WDT
Type
ST
Minimum package
2500 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
ST(STMicroelectronics)
Electronic Component
LM358WDT
Electronic Component
1
Package
8-SO
Electronic Component
Operational Amplifier
Electronic Component
10.67g
Electronic Component
1
Features
Built-in
Electronic Component
BM0265837833
Operating Temperature
55℃~+125℃
Amplifier
2
Output Current
40mA
(SR)
600V/ms
Power Supply Voltage
3V~30V
Static Current(Iq)
700uA

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

LM358WDT 通用双运算放大器产品概述

LM358WDT是意法半导体(ST)推出的双路通用运算放大器,采用8-SO(SOIC-8)封装,凭借宽电源范围、高带载能力、宽温适应性等特点,广泛应用于工业控制、汽车电子、消费电子等多领域,是一款性价比突出的通用信号调理器件。

一、产品基本定位与封装规格

LM358WDT属于ST通用运放系列,核心为双独立运算放大器,集成在单一8引脚SOIC封装内。该封装体积小巧(引脚间距1.27mm),兼容常规PCB设计与焊接工艺,便于批量生产中的集成与布局,同时降低系统空间占用。作为通用型器件,其设计兼顾性能与成本,适合从低功耗便携设备到工业级恶劣环境的多样化需求。

二、核心性能参数亮点

LM358WDT的性能参数平衡了带宽、速度、功耗与精度,关键特点如下:

  1. 电源适应性强:支持单电源(3V~30V)与双电源(Vdd-Vss最大32V),单电源应用时可通过外部偏置电路实现双极性信号放大,无需正负电源即可覆盖多数信号调理场景;
  2. 速度与带宽匹配:增益带宽积(GBP)达1.1MHz,压摆率(SR)为600V/ms,能满足中等频率信号(如音频、传感器输出)的放大需求,避免高频失真;
  3. 精度与噪声控制:输入失调电压(Vos)2mV,温漂15uV/℃,输入偏置电流(Ib)50nA、失调电流(Ios)2nA,噪声密度55nV/√Hz@1kHz,适合低电平信号(如微伏级传感器信号)的初步放大;
  4. 带载能力突出:输出电流可达40mA,能直接驱动小型负载(如LED、小型继电器、低阻抗扬声器),减少外部驱动电路的额外设计;
  5. 低功耗设计:每通道静态电流仅700uA,整机双路总电流约1.4mA,适合电池供电的便携设备(如手持测试仪器、智能家居传感器节点)。

三、典型应用场景

LM358WDT的通用性使其适配多类场景,核心应用包括:

  • 工业控制与传感器调理:工业温度、压力传感器的信号放大(如热电偶、应变片输出),配合滤波电路实现信号去噪;PLC模拟量输入接口的信号调理;
  • 汽车电子:车载传感器(如氧传感器、温度传感器)的信号处理,因工作温度范围(-55℃~+125℃)覆盖汽车发动机舱等恶劣环境;
  • 消费电子与便携设备:音频前置放大(如小型音箱、耳机放大器),电池电压监测电路,手持设备的低功耗信号放大;
  • 电源管理:电源电压监测、电流检测(通过串联电阻实现),过压/欠压保护电路的信号比较。

四、宽温环境与可靠性

LM358WDT的工作温度范围为**-55℃~+125℃**,属于工业级宽温器件,能适应极端温度场景(如户外设备、寒冷地区工业现场、高温汽车环境)。同时,ST的制造工艺确保了器件的长期可靠性,在高低温循环、湿度变化等环境下性能稳定,降低系统维护成本。

五、性价比与系统集成优势

作为ST的成熟通用运放产品,LM358WDT兼具高性价比与易用性:8-SO封装成本低、易采购;性能参数覆盖多数通用需求,无需额外定制器件;低功耗设计减少电源模块的功率负担,适合电池供电与低功耗系统。此外,其引脚定义与LM358系列兼容,便于现有系统的升级与替换。

综上,LM358WDT是一款综合性能优异的双路通用运算放大器,凭借宽电源、宽温、高带载、低功耗等特点,成为工业、汽车、消费电子等领域信号调理的优选器件,适合批量应用与低成本系统设计。

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