WMSIC Electronic Components

WILLSEMI WS72321D-4/TR WS72321D

ModelWS72321D-4/TR
PackageDFN1x1-4
BrandWILLSEMI
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
WILLSEMI WS72321D-4 / TR
Type
WILLSEMI
Minimum package
3000 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
WILLSEMI
Electronic Component
WS72321D-4/TR
Electronic Component
1
Package
DFN1x1-4
Electronic Component
Operational Amplifier
Electronic Component
0.027g
Electronic Component
1
Electronic Component
Output
Electronic Component
BM0228747269
Operating Temperature
40℃~+125℃
Amplifier
1
Output Current
43mA
(SR)
1.1V/us
Power Supply Voltage
1.8V~5.5V
Static Current(Iq)
48uA

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

WS72321D-4/TR 产品概述

一、产品简介

WS72321D-4/TR 是韦尔(WILLSEMI)推出的一款单路运算放大器,专为低功耗、轨到轨输入输出和高输入阻抗的便携及工业级应用设计。器件在单一电源供电下可在 1.8V 至 5.5V 范围内稳定工作,支持宽温度范围(-40℃ 至 +125℃),并采用小尺寸 DFN1×1-4 封装,适合空间受限的模块化设计与表面贴装生产。

二、关键特性

  • 单通道放大器,型号:WS72321D-4/TR,品牌:WILLSEMI(韦尔)
  • 供电范围:单电源 1.8V ~ 5.5V(最大电源差 Vdd–Vss = 5.5V)
  • 输入/输出类型:轨到轨输入,轨到轨输出(Rail-to-Rail I/O)
  • 增益带宽积(GBP):1.5 MHz
  • 压摆率(SR):1.1 V/µs
  • 输入失调电压 (Vos):典型 3 mV;温漂 1 µV/℃
  • 极低输入偏置电流:1 pA;输入失调电流:1 pA
  • 噪声密度:30 nV/√Hz @ 1 kHz
  • 共模抑制比(CMRR):104 dB
  • 静态电流(Iq):48 µA(典型)——适合低功耗应用
  • 输出驱动能力:可驱动至 43 mA(短时/典型)
  • 工作温度范围:-40℃ ~ +125℃
  • 封装:DFN1x1-4,便于高密度 PCB 布局

三、电气性能与应用意义

  • 低电源电压兼容性:1.8V 的最低供电门槛使该器件适合锂电池供电或低压单芯片系统,便于移动设备与便携式传感器前端设计。
  • 轨到轨输入输出:在接近电源轨的信号处理场合(如单电源测量、基线偏置较低的传感器接口),无需额外电平移位,简化系统设计与节省外部器件。
  • 低偏置电流与高输入阻抗:1 pA 级的输入偏置电流使其非常适合高阻抗传感器(例如化学传感、电荷测量、电容传感)以及精密采样电路,能有效减少测量误差。
  • 中等带宽与压摆率:1.5 MHz 的 GBP 与 1.1 V/µs 的压摆率定位于低到中频信号链,适用于直流放大器、低通/高通/带通滤波器、缓冲放大器及模数转换器(ADC)驱动,但不推荐用于高速精密采样或宽带高速信号处理。
  • 噪声与精度:30 nV/√Hz 的噪声密度在 1 kHz 附近提供良好的信噪比表现,配合 3 mV 的失调电压与 1 µV/℃ 的漂移,能满足多数通用精密测量需求。
  • 可靠的共模抑制与工业温度范围:104 dB 的 CMRR 与 -40℃ 至 +125℃ 的工作温度,使之适合工业自动化、环境监测及汽车电子等苛刻环境。

四、典型应用场景

  • 便携式仪器与手持测量设备(低功耗、窄电压供电)
  • 传感器接口与信号调理(高阻抗传感器、电化学测量、热电偶放大)
  • 数据采集前端与 ADC 驱动缓冲
  • 精密低频滤波(有源滤波、积分器)
  • 工业控制与过程测量模块(-40℃ 至 +125℃ 工作温度)
  • 小型便携医疗设备与便携检测仪

五、封装与供应信息

WS72321D-4/TR 提供 DFN1x1-4 小型封装,适合表面贴装加工(SMT),便于在空间受限的 PCB 上实现高密度布局。型号后缀 TR 通常表示带带盘或卷带包装,便于自动化装配。有关订购、最小起订量及交货周期,请联系韦尔或授权分销商获取最新供货信息。

六、设计注意事项

  • 电源去耦:建议在 Vdd 与 Vss 之间靠近器件放置 0.1 µF 陶瓷去耦电容,以抑制瞬态干扰并提升稳定性。
  • 输入保护与过压:尽管器件支持轨到轨输入,仍需避免输入电压超出电源轨,必要时采用限流电阻或钳位电路保护。
  • 负载与稳定性:当驱动较大容性负载时,可能需要在输出与负载之间串联小阻(如 10–50 Ω)以确保稳定性并抑制振铃。
  • PCB 布局:将模拟信号地与电源去耦近距离布置,减少环路面积,保持高阻抗输入引脚远离噪声源。
  • 温度漂移考虑:尽管 Vos TC 为 1 µV/℃,在极端温度变化场合仍建议通过软件校准或硬件补偿提高长期精度。

总结:WS72321D-4/TR 是一款面向低功耗、轨到轨输入输出与高输入阻抗场合的通用单路运算放大器。凭借小尺寸封装、工业级温度范围和良好的性能组合,它适合便携式设备、传感器调理和工业控制等多种应用。若需进一步的电气参数曲线、典型应用电路或参考设计文件,请咨询韦尔官方资料或索取完整数据手册。

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