WMSIC Electronic Components

UMW LM258DR

ModelLM258DR
PackageSOIC-8
BrandUMW
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 Date code within 2 years

Available for RFQ

Technical data

Product details

19 specifications

Core information

Product name
UMW LM258DR
Type
UMW
Minimum package
2500 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
UMW
Electronic Component
LM258DR
Electronic Component
1
Package
SOIC-8
Electronic Component
Operational Amplifier
Electronic Component
0g
Power Supply
0V~32V
Electronic Component
1
Electronic Component
BM0227498444
Operating Temperature
20℃~+85℃
Amplifier
Electronic Component
Output Current
20mA
Static Current(Iq)
500uA
Power Supply(Vee~Vcc)
16V~16V
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.

LM258DR 产品概述

一、概述

LM258DR 是友台半导体(UMW)推出的一款通用双路运算放大器,封装为 SOIC-8,面向工业与消费类的模拟信号处理场景。该器件支持宽电源电压范围,单电源工作可达 0V 至 32V,双电源对称范围为 ±16V,适用于多种电源拓扑。每路具有较低的输入失调与偏置电流、良好的共模抑制能力,适合用于传感器信号调理、低频滤波、缓冲驱动等常见电路。

二、主要参数

  • 放大器数:双路
  • 最大电源宽度 (Vdd−Vss):32V
  • 单电源工作范围:0V ~ 32V;双电源:−16V ~ +16V
  • 输入失调电压 (Vos):5 mV
  • 输入失调电压温漂 (Vos TC):7 µV/℃
  • 输入偏置电流 (Ib):300 nA
  • 输入失调电流 (Ios):3 nA,温漂 (Ios TC):10 pA/℃
  • 共模抑制比 (CMRR):85 dB
  • 静态电流 (Iq):500 µA(典型,整片或单路视应用而定)
  • 输出驱动能力:典型 20 mA
  • 工作温度范围:−20 ℃ ~ +85 ℃
  • 封装:SOIC-8
    这些参数使 LM258DR 在低功耗与中等精度要求的场合表现良好,尤其适合对漂移和偏置有一定控制要求的应用。

三、引脚与封装(SOIC-8)

典型引脚排列便于在常见电路板上直接替换与布局:

  1. 输出 A
  2. 反相输入 A
  3. 同相输入 A
  4. V−(负供电或地)
  5. 同相输入 B
  6. 反相输入 B
  7. 输出 B
  8. V+(正供电)
    建议在 V+ 与 V− 之间靠近芯片放置去耦电容(如 0.1 µF 与 10 µF 并联),以保证电源稳定性与抑制瞬态噪声。

四、典型应用场景

  • 传感器信号放大与调理(温度、压力、光电等)
  • 低通/高通滤波器、积分器、比例放大电路
  • 电压跟随与缓冲驱动,用于后级 ADC 或模数转换前端
  • 简单驱动与比较级(注意并非专用高速比较器)
  • 电源监测、模拟加法器与差分放大电路

五、设计建议与注意事项

  • 由于器件并非严格的轨到轨输入/输出,输入共模靠近电源轨时性能会下降,设计时应确保输入信号留有适当裕量。
  • 对于精密测量场合,应关注输入失调电压及其温漂(Vos = 5 mV,Vos TC = 7 µV/℃),必要时可采用外部补偿或后端校准。
  • 输出驱动能力约 20 mA,适合驱动小负载,若驱动大电流或低阻负载需加缓冲或功率级。
  • 版图与走线:把敏感模拟输入线远离数字开关与大电流回流路径,输入端可增加防静电与限流保护以延长可靠性。
  • 工作环境温度需控制在 −20 ℃ 到 +85 ℃ 之间,超温可能导致参数漂移或失效。

六、总结

LM258DR(UMW/友台)是一款性能均衡的双路通用放大器,凭借 0~32V 的宽电源兼容性、较低的输入偏置和失调及良好的共模抑制,适用于多种中低频模拟应用。选择与布局时注意电源去耦、输入共模范围及热设计,可在工业控制、数据采集与通用模拟前端中获得稳定可靠的表现。若需更高精度或更宽带宽的应用,可在系统层面结合外部补偿或选择高性能替代器件。

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