WMSIC Electronic Components

UMW LMV324IDR

ModelLMV324IDR
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 26+

Available for RFQ

Technical data

Product details

19 specifications

Core information

Product name
UMW LMV324IDR
Type
SOP-14
Minimum package
2500 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
UMW
Electronic Component
LMV324IDR
Electronic Component
1
Package
SOP-14
Electronic Component
Operational Amplifier
Electronic Component
0.27g
Electronic Component
1
Electronic Component
Output
Electronic Component
BM0227161844
Operating Temperature
25℃~+85℃
Amplifier
4
Output Current
25mA
(SR)
520V/ms
Power Supply Voltage
2.1V~5.5V
Static Current(Iq)
45uA

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

LMV324IDR 产品概述

一、产品简介

LMV324IDR 是一款由 UMW(友台半导体)推出的四路电压反馈运算放大器,具有轨到轨输入与轨到轨输出能力,可在低电压单电源系统中实现满摆幅输出。该器件针对便携、电池供电及低功耗模拟前端应用优化,兼顾低噪声、低静态功耗和较强的输出驱动能力,适用于多通道信号调理与传感器接口设计。

二、主要特点

  • 四路放大器,集成度高,节省 PCB 面积(封装:SOP-14)。
  • 轨到轨输入和轨到轨输出,实现接近电源轨的信号处理与满摆幅输出。
  • 宽单电源工作范围:2.1V ~ 5.5V(最大电源差 VDD–VSS 可达 7.5V)。
  • 低静态电流:IQ = 45 µA(典型),适合低功耗系统。
  • 低输入偏置电流:Ib = 10 pA,适合高阻抗传感器接口。
  • 输入失调电压:Vos = 5 mV;温漂 Vos TC = 2.7 µV/℃,热漂性能良好。
  • 共模抑制比 CMRR = 89 dB,保证差模抑制能力。
  • 低噪声电压密度 eN = 20 nV/√Hz @10 kHz,适合中低频精密放大。
  • 增益带宽积 GBP = 1 MHz,适用于中低频带宽要求的放大应用。
  • 压摆率 SR = 520 V/ms(约 0.52 V/µs),对阶跃信号响应性能良好。
  • 输出驱动能力:最高 25 mA,可驱动较低阻抗负载。
  • 工作温度范围:-25℃ ~ +85℃。

三、关键电气性能解读

  • 带宽与增益:1 MHz 的 GBP 使器件在低增益(如增益 = 1~10)下可获得几百 kHz 的闭环带宽;在精密滤波或缓冲时应根据闭环增益估算有效带宽。
  • 噪声与失调:20 nV/√Hz(10 kHz)与 5 mV 的输入失调电压组合,使其在中低频信号采集与放大方面表现稳健;若需亚毫伏级精度,应配合后级校准或失调校正。
  • 输入与输出范围:轨到轨特性加上低压单电源支持,使器件非常适合直接与单电源传感器和 ADC 连接,减少电平转换电路。
  • 驱动与速度:25 mA 输出电流与 520 V/ms 的压摆率支持驱动模拟开关、较短走线或低到中等电容负载,但不适合高频大电流驱动场合。

四、典型应用

  • 传感器前端:温度、压力、湿度等高阻抗传感器的缓冲与放大。
  • 便携式/电池供电设备:单电源 2.1V 起动设计,低功耗特性延长电池寿命。
  • 仪表放大器与信号调理:要求轨到轨输入输出、较高 CMRR 与低噪声的多通道场景。
  • 主动滤波器、采样保持与 ADC 缓冲:在中低频带宽下实现稳定采样系统。
  • 音频前端(低频段)、工业控制模拟回路。

五、设计与布局建议

  • 电源去耦:在 VDD 与 VSS 之间靠近封装放置 0.1 µF 陶瓷去耦电容,必要时并联 1 µF~10 µF 的旁路电容以抑制低频纹波。
  • PCB 布局:将输入阻抗路径尽量缩短,避免高阻抗节点靠近噪声源或大电流回路;多通道使用时注意模拟地回路。
  • 反馈与带宽:电压反馈放大器闭环带宽受 GBP 限制,选择反馈阻值时兼顾噪声与稳定性,避免使用过高阻值以降低噪声与偏置电流引起的误差。
  • 输出负载:输出直流或瞬态大电流(接近 25 mA)会导致功耗上升及输出摆幅限制,必要时使用缓冲或功率级来驱动较大负载。
  • 偏置与漂移校准:对于高精度测量场合,应在系统校准流程中考虑 Vos 与温漂补偿。

六、封装与采购信息

  • 器件型号:LMV324IDR
  • 品牌:UMW(友台半导体)
  • 封装:SOP-14(标记后缀 DR 表示卷带装带盘包装)
  • 环境与可靠性:工作温度 -25℃ 至 +85℃,适合工业级常温应用。

七、注意事项

  • 若应用对 DC 精度要求高(亚毫伏级),建议外部失调校准或采用零漂放大器替代。
  • 在高增益或高速应用中,应评估相位裕度与闭环稳定性,必要时并联小电容或调整反馈以确保稳定工作。
  • 器件虽然为轨到轨,但在满载或极限温度下输出与轨之间仍有小幅差异,系统设计需预留裕量。

总结:LMV324IDR 以其四路集成、轨到轨特性、低功耗与良好噪声性能,适合多通道、低电压和便携式电子系统的模拟前端设计。在具体电路中按带宽、噪声和输出驱动需求合理选型与 PCB 实现,可获得稳定且高性价比的解决方案。

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