WMSIC Electronic Components

HGSEMI LM1458M/TR LM1458M

ModelLM1458M/TR
PackageSOP-8
BrandHGSEMI
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
HGSEMI LM1458M / TR
Type
HGSEMI
Minimum package
2500 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
HGSEMI
Electronic Component
LM1458M/TR
Electronic Component
1
Package
SOP-8
Electronic Component
Operational Amplifier
Electronic Component
0.223g
Electronic Component
1
Electronic Component
BM0264548639
Operating Temperature
0℃~+70℃
Amplifier
2
Static Current(Iq)
3mA
Electronic Component
Electronic Component
Electronic Component
2500
Common Mode (CMRR)
90dB
Current(Ib)
200nA

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

LM1458M/TR 产品概述

一、产品简介

LM1458M/TR 是华冠(HGSEMI)出品的通用双运算放大器,采用 SOP-8 封装,适用于多种模拟信号处理场景。该器件基于经典的 LM1458/LM1558 设计,两个运放共享一个公共偏置网络和电源引脚,除电源与偏置外,两个放大器工作完全独立,便于在同一芯片内实现双通道放大、滤波或比较等功能。

二、主要性能指标

  • 放大器数:2(双运放)
  • 最大电源差(VDD - VSS):36V(推荐双电源范围 VEE ~ VCC:-18V ~ +18V)
  • 输入失调电压(Vos):1mV
  • 输入偏置电流(Ib):200nA
  • 输入失调电流(Ios):80nA
  • 共模抑制比(CMRR):90dB
  • 静态电流(Iq):3mA(每对放大器)
  • 工作温度范围:0℃ ~ +70℃
  • 封装:SOP-8;型号后缀 M/TR(TR 表示卷带包装,适合贴片加工与自动贴装)

这些参数表明 LM1458M/TR 在低偏置、低失调和良好共模抑制方面具有可靠表现,适合多数通用放大场合。

三、产品特点与优势

  • 双通道集成,节省 PCB 面积并降低成本。
  • 宽电源范围,支持较大幅度的双电源系统(最高 36V 差分),适配多种供电环境。
  • 低输入失调电压与较小偏置电流,能够在直流精度要求一般的信号链中提供稳定放大性能。
  • 90dB 的 CMRR 提高了对共模干扰的抑制能力,有利于高共模噪声环境下的应用。
  • SOP-8 小封装与卷带包装(TR)便于自动化生产与批量装配。

四、典型应用场景

  • 音频前级放大与滤波电路
  • 信号调理和缓冲放大(传感器接口、桥式传感器前端)
  • 有源滤波器、积分器、微分器等模拟电路模块
  • 仪表放大和通用放大应用(非高精度测量场合)
  • 教学与原型验证中常用的双运放实现

五、使用建议与注意事项

  • 电源去耦:为保证稳定性能,建议在电源引脚近端并联 0.1µF 与 10µF 陶瓷/电解去耦电容,以抑制电源噪声与瞬态。
  • 电源限制:工作时请确保 VDD - VSS 不超过 36V,总电压与极性应在推荐范围内(双电源 ±18V)。
  • 温度与偏置:在高温或高增益场合,注意输入偏置电流与失调随温度可能变化,必要时采用补偿或外部校准。
  • 布局考虑:SOP-8 封装在布线时注意信号与电源的分离,敏感输入线应尽量短且靠近地平面,避免共模干扰引入。
  • 包装与采购:型号后缀 M/TR 表示适用于表面贴装的 SOP-8 包装形式并以卷带(Tape & Reel)供货,便于 SMT 生产。

总结:LM1458M/TR 以其双通道集成、宽电源范围与良好的共模抑制能力,成为通用模拟放大与信号处理电路的可靠选择。华冠(HGSEMI)提供的 SOP-8 封装版本兼顾了性能与生产适配性,适合批量制造与多种工业、商用电子产品的嵌入式模拟前端设计。

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