WMSIC Electronic Components

DOWO LMV721-DW LMV721

ModelLMV721-DW
PackageSOT-23-5
BrandDOWO
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 26+

Available for RFQ

Technical data

Product details

19 specifications

Core information

Product name
DOWO LMV721-DW
Type
DOWO
Minimum package
3000 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
DOWO
Electronic Component
LMV721-DW
Electronic Component
1
Package
SOT-23-5
Electronic Component
Operational Amplifier
Electronic Component
0.039g
Electronic Component
1
Electronic Component
Output
Features
Built-in
Electronic Component
BM0264356085
Operating Temperature
40℃~+125℃
Amplifier
1
Output Current
140mA
(SR)
8.5V/us
Power Supply Voltage
2.1V~5.5V

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

LMV721-DW 产品概述

一、产品简介

LMV721-DW(品牌:DOWO 东沃)是一款单通道、轨到轨输入/输出的低电压运算放大器,针对便携式与传感器接口设计。器件在2.1V~5.5V单电源或±1.05V~±2.75V双电源下稳定工作,内置补偿,单位增益稳定,提供优秀的速度/功耗比,适合要求低偏置、电流驱动能力与宽带宽的应用场合。

二、主要参数与特性

  • 电源范围:单电源 2.1V ~ 5.5V;双电源 ±1.05V ~ ±2.75V(Vdd-Vss 最大 5.5V)
  • 轨到轨输入/轨到轨输出,便于处理接近电源轨的信号
  • 增益带宽积(GBW):10 MHz;压摆率(SR):8.5 V/µs
  • 输入失调电压 Vos ≤ 500 µV(典型保证,25℃、Vs=5V、VCM=Vs/2);温漂 2.6 µV/℃
  • 输入偏置电流 Ib 约 1 pA;输入失调电流 Ios 约 10 pA
  • 输入电压噪声密度 eN ≈ 9.5 nV/√Hz(@1 kHz);共模抑制比 CMRR 65 dB
  • 静态电流 Iq ≈ 400 µA;输出短路/驱动能力达 140 mA
  • 工作温度范围:-40 ℃ ~ +125 ℃
  • 封装:SOT-23-5;功能:内置补偿,单位增益稳定

三、性能亮点

  • 低电压与轨到轨特性使其在单电池或低电压系统中仍能实现较大动态范围。
  • 超低输入偏置电流(pA 级)非常适合高阻抗传感器、光电二极管前置放大与电荷检测应用。
  • 10 MHz 的带宽和 8.5 V/µs 压摆率在大多数有源滤波和采样保持电路中提供充足的瞬态响应。
  • 输出驱动能力高(达 140 mA),便于驱动小负载或直接驱动后级低阻抗器件。

四、典型应用场景

  • 传感器信号调理(热电偶、应变片、电容/电阻式传感器)
  • 有源滤波器、比较放大器与缓冲器
  • 便携式仪表与电池供电系统
  • 精密低频放大、采集前端及驱动轻载负载

五、使用建议与注意事项

  • 电源去耦:建议在靠近器件电源脚放置 0.1 µF 陶瓷电容和一个 1 µF~10 µF 的旁路电容以抑制瞬态噪声。
  • 负载与稳定性:虽为轨到轨输出,但对大电容性负载可能影响相位裕度,驱动电容性负载时可在输出与负载之间并联小电阻(10Ω~100Ω)改善稳定性。
  • 输入共模范围:器件支持轨到轨输入,但在靠近电源轨时性能(噪声、失调)可能略有变化,关键应用建议在设计时验证实际工作点。
  • 热与封装:SOT-23-5 封装热阻较高,高功耗场合注意散热与PCB铜箔面积布局。
  • 常温规格表述:典型失调电压在 25 ℃、Vs=5V 下保证 ≤0.5 mV,设计时宜考虑失调温漂与电源变化带来的影响。

六、封装与采购

  • 标准封装:SOT-23-5,适合空间受限的便携式设备与表面贴装生产线。
  • 推荐应用开发时参考器件数据手册中的典型电路与测试条件,并在目标系统环境下进行完整验证。

LMV721-DW 在低电压、低偏置、电源轨兼容性以及中等带宽下提供均衡的性能,是传感器接口和便携式模拟前端的理想选择。

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