WMSIC Electronic Components

ElecSuper LM258DT(ES) LM258DT

ModelLM258DT(ES)
PackageSOP-8
BrandElec Super
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
Elec Super LM258DT(ES)
Type
ELECSUPER
Minimum package
4000 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
ELECSUPER
Electronic Component
LM258DT(ES)
Electronic Component
1
Package
SOP-8
Electronic Component
Operational Amplifier
Electronic Component
0.154g
Electronic Component
1
Electronic Component
Output
Electronic Component
BM0258544087
Operating Temperature
40℃~+125℃
Amplifier
2
Output Current
45mA
(SR)
1V/us
Power Supply Voltage
3V~36V
Static Current(Iq)
117uA

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

LM258DT(ES) 产品概述

一、产品简介

LM258DT(ES) 是 ElecSuper(静芯微)推出的一款双通道运算放大器,封装为 SOP-8,支持宽电源电压并具有轨到轨输入与轨到轨输出能力。该器件适用于低功耗、低频带宽的精密信号调理与传感器前端放大场合,工作温度范围宽(-40℃ 至 +125℃),支持单电源工作 3V ~ 36V,最大电源电压差可达 36V。

二、主要参数

  • 放大器数:双路
  • 电源范围:单电源 3V ~ 36V(VDD–VSS 最大 36V)
  • 输入/输出:轨到轨输入,轨到轨输出
  • 增益带宽积(GBP):1 MHz
  • 压摆率(SR):1 V/µs
  • 输入失调电压(Vos):3.5 mV,温漂 3 µV/℃
  • 输入偏置电流(Ib):30 pA;输入失调电流(Ios):2 pA
  • 噪声密度:35 nV/√Hz @ 1 kHz
  • 共模抑制比(CMRR):95 dB
  • 静态电流(Iq):117 µA(典型)
  • 输出电流:45 mA(最大导通能力)
  • 工作温度:-40℃ ~ +125℃
  • 封装:SOP-8
  • 品牌:ElecSuper(静芯微)

三、性能解读与设计要点

  1. 带宽与响应:1 MHz 的增益带宽积和 1 V/µs 的压摆率决定该器件适合低至中频率信号处理(例如缓慢变化的传感器信号、低通/带通滤波器、仪表放大器前级)。对于高频或高边沿速率的应用,应选用更高速放大器。
  2. 精度与漂移:3.5 mV 的失调电压配合 3 µV/℃ 的温漂,能在多数精密测量场合保持良好直流精度,尤其适合需要长期稳定性的系统。
  3. 高输入阻抗与低噪声:30 pA 的低偏置电流和 35 nV/√Hz 的噪声密度,使其非常适合高阻抗传感器(热敏、电化学、电容式等)的前端放大。
  4. 轨到轨 I/O 与宽供电:支持 3V 单电源供电并能在靠近电源轨处输入输出,便于在低电压电池供电系统中最大化动态范围。宽电源范畴(最高 36V)也能满足工业电源应用需求。
  5. 输出驱动能力:最大 45 mA 的输出电流可驱动中等负载,但若需驱动低阻负载或功率较大的执行器,建议外接功率放大器或驱动器。

四、典型应用

  • 传感器信号调理与放大(温度、压力、光电、应变计等)
  • 便携式与电池供电测量仪表、数据采集前端
  • 有源滤波器、积分/微分电路与基准缓冲
  • 工业控制的模拟前端与差分信号放大
  • ADC 驱动电路(注意与 ADC 的带宽匹配)

五、封装与引脚(SOP-8,常见引脚排列)

  • Pin1:输出 A
  • Pin2:反相输入 A
  • Pin3:同相输入 A
  • Pin4:V–(负电源/地)
  • Pin5:同相输入 B
  • Pin6:反相输入 B
  • Pin7:输出 B
  • Pin8:V+(正电源)

(建议在设计时参考厂商完整数据手册确认引脚与电气特性。)

六、使用建议与注意事项

  • 电源去耦:靠近器件的 V+ 与 V– 引脚放置 0.1 µF 陶瓷电容与 10 µF 电解电容,可降低电源噪声与瞬态。
  • 输入保护:尽量避免输入端超过电源轨的电压,应对高压源或反向信号采取限流或钳位保护。
  • 驱动与稳定性:直接驱动容性负载可能引起振荡或稳定性问题,必要时在输出串联小电阻或加补偿网络。
  • 热管理:在高环境温度或高负载工作下,应关注封装散热与功耗。

若需器件样片、详细电气特性曲线或参考电路图,请联系 ElecSuper(静芯微)或查看官方数据手册。

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