WMSIC Electronic Components

TECH PUBLIC LMV321IDBVR

ModelLMV321IDBVR
PackageSOT-23-5
BrandTECH PUBLIC
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
TECH PUBLIC LMV321IDBVR
Type
TECH PUBLIC
Minimum package
3000 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
TECH PUBLIC
Electronic Component
LMV321IDBVR
Electronic Component
1
Package
SOT-23-5
Electronic Component
Operational Amplifier
Electronic Component
0.034g
Electronic Component
1
Electronic Component
Output
Electronic Component
BM0227776282
Operating Temperature
40℃~+125℃
Amplifier
1
Output Current
20mA
(SR)
600V/ms
Power Supply Voltage
2.2V~5.5V
Static Current(Iq)
40uA

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

LMV321IDBVR 产品概述

一、产品简介

LMV321IDBVR 是一款单路、低功耗轨到轨运算放大器,封装为 SOT-23-5,由 TECH PUBLIC(台舟电子) 提供。器件面向低电压、低功耗和高性能的便携与工业传感前端,支持单电源工作电压 2.2V 到 5.5V,适合电池供电系统及空间受限应用。

二、主要性能特点

  • 共模抑制比 (CMRR):65 dB,保证在共模干扰存在时仍保持较好精度。
  • 噪声密度 (eN):20 nV/√Hz @ 10 kHz,低噪声特性适合对噪声敏感的传感器接口。
  • 轨到轨输入 / 轨到轨输出:最大限度扩展输入/输出摆幅,便于低电压系统设计。
  • 最大电源宽度 (Vdd-Vss):5.5 V;推荐单电源范围:2.2 V ~ 5.5 V。
  • 输入失调电压 (Vos):典型 5 mV,温漂 (Vos TC):2 μV/℃,利于低漂移设计。
  • 输入偏置电流 (Ib) / 输入失调电流 (Ios):10 pA,适合高阻抗传感器读出。
  • 增益带宽积 (GBP):1 MHz,适用于低速至中速信号处理(滤波、缓冲等)。
  • 压摆率 (SR):600 V/ms,能较好地响应快速变化信号。
  • 静态电流 (Iq):40 μA(单路),非常适合电池供电的能耗敏感应用。
  • 输出驱动能力:可提供至 20 mA 的输出电流,用于驱动小负载或后级电路。

三、典型应用场景

  • 便携式医疗仪器、手持测试设备的模拟前端。
  • 电池供电的传感器接口与放大器(温度、电压、电流传感)。
  • 低频滤波器、缓冲放大(电压跟随器)、比较或驱动小功率负载。
  • 工业控制信号调理,要求宽温度范围(-40 ℃ ~ +125 ℃)的场合。

四、设计与布局注意事项

  • 电源去耦:在靠近封装的 Vcc 引脚放置 0.1 μF 陶瓷去耦,减小瞬态干扰。
  • 输入保护:虽然为轨到轨结构,但在外部有可能出现超出电源轨的信号时应加限流或钳位保护。
  • 容性负载:若驱动较大容性负载,注意可能产生振荡,必要时在输出与地之间并联小电阻或加稳定网络。
  • 高阻抗源:利用其低 Ib 特性时,注意 PCB 泄漏电流与杂散电容,保持清洁的走线与合适的保护电阻。
  • 温漂与精度:对于精密测量,考虑 Vos 和 Vos TC 带来的累积误差并进行热漂补偿或软件校准。

五、封装与环境参数

  • 封装:SOT-23-5,适合表面贴装、小尺寸电路板。
  • 工作温度范围:-40 ℃ 到 +125 ℃,满足工业级温度要求。
  • 描述分类:未分类(请根据具体应用和可靠性要求检验替代件与认证)。

六、选型建议与总结

LMV321IDBVR 以其低功耗(40 μA)、轨到轨特性、低输入偏置电流及较低噪声,适合用于空间受限、能耗敏感且需宽温度范围的模拟前端设计。若应用需要更高带宽或更低失调,可在系统层面做增益/滤波与校正设计,或者选取更高性能的放大器。总体上,是一颗面向低电压便携及工业信号调理的实用单通道运放选择。

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