WMSIC Electronic Components

UMW LM2902DR

ModelLM2902DR
PackageSOP-14
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 LM2902DR
Type
UMW
Minimum package
2500 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
UMW
Electronic Component
LM2902DR
Electronic Component
1
Package
SOP-14
Electronic Component
Operational Amplifier
Electronic Component
0.262g
Electronic Component
1
Features
Built-in
Electronic Component
BM0227583804
Operating Temperature
40℃~+105℃
Amplifier
4
Output Current
20mA
(SR)
500V/ms
Power Supply Voltage
3V~26V
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.

LM2902DR 产品概述

一、概述

LM2902DR 是由 UMW(友台半导体)推出的一款四通道通用放大器,采用推挽式输出结构,适用于对功耗、成本和通用性能有平衡要求的工业与消费类电子产品。器件在宽温度范围内稳定工作(-40℃~+105℃),支持单电源和对称双电源供电,具有良好的共模抑制与低噪声特性,便于在模拟信号调理、滤波、缓冲和驱动场合使用。

二、主要参数

  • 放大器数:4 路(四合一)
  • 共模抑制比(CMRR):80 dB
  • 噪声密度(eN):35 nV/√Hz @ 1 kHz
  • 增益带宽积(GBP):1.2 MHz
  • 压摆率(SR):500 V/ms(等效 0.5 V/μs)
  • 输入失调电压(Vos):3 mV
  • 输入偏置电流(Ib):20 nA
  • 输入失调电流(Ios):2 nA
  • 静态电流(Iq):700 μA(典型,整片或单通道视应用而定)
  • 输出电流能力:20 mA
  • 最大电源宽度:26 V
  • 单电源电压范围:3 V ~ 26 V
  • 对称双电源范围:±1.5 V ~ ±13 V(总差值可达 26 V)
  • 工作温度:-40 ℃ ~ +105 ℃
  • 封装:SOP-14

三、关键特点

  • 四路集成,节省 PCB 面积与物料成本,便于多通道设计统一性;
  • 推挽式输出能够在多种负载下提供高达 20 mA 的驱动能力,适合驱动小型致动器、LED 指示或后级缓冲;
  • 低噪声(35 nV/√Hz)与较高 CMRR(80 dB),有利于微小信号放大和高共模干扰环境下的稳定采集;
  • 宽电源兼容性:支持低至 3 V 的单电源系统以及对称 ±1.5 V~±13 V 的双电源系统,适配多类电源拓扑;
  • 宽温度范围与工业级应用适配,可靠性高。

四、典型应用

  • 模拟信号前端放大与缓冲(传感器信号调理、温度/压力/电流采集等);
  • 主动滤波器、积分/微分电路与运放级增益模块;
  • 信号驱动与小功率致动控制(例如驱动指示灯、继电器驱动前级等);
  • 多通道信号放大场合(数据采集系统、工业控制器、便携类仪器)。

五、封装与可靠性

LM2902DR 提供 SOP-14 封装,利于自动贴装和散热管理。器件额定的工作温度范围 -40 ℃ 至 +105 ℃ 满足工业级标准,建议在实际应用中配合合理的焊接工艺、热管理与信号接地设计以保证长期稳定性。

六、设计注意事项与建议

  • 电源去耦:在 VCC/VEE 附近放置 0.1 μF 陶瓷电容并并联大容量电解电容以抑制瞬态;
  • 输入保护:若系统存在高电压或反向电压风险,建议在输入端加限制电阻或 TVS/二极管保护,防止输入跨越电源轨损坏器件;
  • 布线与接地:模拟地尽量独立,信号回路短且靠近器件,减少噪声耦合影响 CMRR 与噪声性能;
  • 负载与散热:连续输出接近 20 mA 时注意封装及 PCB 热阻,必要时设计散热铜箔或散热通道。

LM2902DR 以其四路集成、低噪声与广泛的电源兼容性,为通用模拟放大场景提供了性价比较高的方案;在系统设计中按上述建议进行布局与保护,可发挥其最佳性能。

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