WMSIC Electronic Components

UMW LMV321IDCKR

ModelLMV321IDCKR
PackageSC-70-5
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 25+

Available for RFQ

Technical data

Product details

19 specifications

Core information

Product name
UMW LMV321IDCKR
Type
UMW
Minimum package
3000 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
UMW
Electronic Component
LMV321IDCKR
Electronic Component
1
Package
SC-70-5
Electronic Component
Operational Amplifier
Electronic Component
0g
Power Supply
2.1V~5.5V
Electronic Component
1
Electronic Component
Output
Electronic Component
BM0227327795
Operating Temperature
25℃~+85℃
Amplifier
Electronic Component
Output Current
25mA
(SR)
520V/ms
(e N)
20nV/√Hz@10KHz

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

LMV321IDCKR 产品概述

一、概述与定位

LMV321IDCKR(UMW 友台半导体)是一款单路低功耗、轨到轨输入/输出的运算放大器,针对便携式与电池供电系统优化设计。器件在单电源供电条件下工作电压范围为2.1V至5.5V,最大电源电压差(Vdd‑Vss)可达7.5V,适合各种低压系统和电源容限有限的应用。其SC-70-5小封装有利于高密度PCB布局与移动终端应用。

二、主要性能参数

  • 放大器通道数:单路
  • 轨到轨特性:轨到轨输入与轨到轨输出,能在接近电源轨的电压下工作,简化信号链设计
  • 增益带宽积(GBP):1 MHz,适用于中低频模拟信号处理
  • 压摆率(SR):520 V/ms,快速响应阶跃输入
  • 输入失调电压(Vos):典型值 5 mV;温漂 2.7 μV/°C
  • 输入偏置电流(Ib):10 pA;输入失调电流(Ios):10 pA,适合高阻抗传感器接口
  • 噪声密度(eN):20 nV/√Hz @10 kHz,低噪声性能有利于精确信号放大
  • 共模抑制比(CMRR):89 dB
  • 静态电流(Iq):45 μA(典型),利于低功耗设计
  • 输出电流:最大可驱动 25 mA
  • 工作温度范围:-25 ℃ ~ +85 ℃
  • 封装:SC-70-5

三、典型应用场景

  • 电池供电便携设备(数据记录器、手持测试仪)
  • 传感器前端放大(热敏、光电、压力等高阻传感器)
  • 低功耗便携式模数转换器前置缓冲/驱动
  • 移动医疗监测与便携式生物信号放大
  • 低频滤波器、积分器、缓冲器及基准缓冲电路

四、设计与使用建议

  • 电源旁路:建议在VDD与VSS之间靠近引脚放置0.01–0.1 μF陶瓷旁路电容以抑制高频噪声,改善瞬态响应。
  • 输入与输出摆幅:虽为轨到轨设计,但在接近电源轨时驱动能力会受限,特殊场合下请在实际电源与负载条件下验证线性区间。
  • 负载与频宽权衡:1 MHz 的GBP适合增益不高的放大器配置;如需较大闭环增益,带宽将相应下降。对于驱动较大容性负载,建议加上适当的串联阻抗或频率补偿以保证稳定性。
  • 温漂与偏置:Vos=5 mV且温漂仅2.7 μV/℃,长期温度变化下偏移稳定性较好,适合精密直流信号处理;高阻抗源时注意布局和输入漏电管理以发挥低偏置电流优势。
  • 布局注意:将模拟接地与数字地分离,信号走线尽量短并避开开关噪声源;SC-70-5体积小,焊盘设计与散热通道要合理考虑。

五、包装与采购

器件以SC-70-5小封装提供,适合自动贴片生产流程。型号:LMV321IDCKR(UMW)。在批量采购或用于关键产品时,建议与供应商确认封装出货形式(卷带、托盘)及器件出厂测试报告。

六、小结

LMV321IDCKR是一款面向低功耗、低电压应用的单路轨到轨运放,兼顾低噪声、低失调与较高压摆率,适合便携仪器、传感器接口和精密低频放大场合。合理的系统设计与布局将充分发挥其低功耗与高线性优势。若需针对具体应用的电路建议或仿真参数,可提供更详细的使用场景以便给出针对性方案。

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