WMSIC Electronic Components

ADI/LINEAR ADA4938-1ACPZ-R7 ADA4938

ModelADA4938-1ACPZ-R7
Package16-LFCSP-VQ(3x3)
BrandADI/LINEAR
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 Date code within 2 years

Available for RFQ

Technical data

Product details

19 specifications

Core information

Product name
ADI(Analog Devices) / LINEAR ADA4938-1ACPZ-R7
Type
ADI/LINEAR
Minimum package
1500 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
ADI(Analog Devices) / LINEAR
Electronic Component
ADA4938-1ACPZ-R7
Electronic Component
1
Package
16-LFCSP-VQ(3x3)
Electronic Component
Differential Op Amp
Electronic Component
0.07g
Electronic Component
1
Electronic Component
Output
Features
Output Common Mode Voltage; /; Single-Ended Conversion; Integrated ADCDriver
Electronic Component
BM0264690942
Operating Temperature
40℃~+85℃
Amplifier
Electronic Component
Electronic Component
6.5ns
Output Current
75mA
Output Type
Electronic Component

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

ADA4938-1ACPZ-R7 高速差分ADC驱动器产品概述

ADA4938-1ACPZ-R7是亚德诺半导体(ADI)旗下LINEAR系列的单路高速差分ADC驱动器,专为高速数据采集系统设计,兼具高带宽、低噪声与强驱动能力,适配12-16位高速ADC的前端信号调理需求。

一、产品定位与核心应用

该器件定位于高速差分信号驱动场景,核心应用覆盖:

  • 高速数据采集卡(采样率100MSPS以上);
  • 示波器、逻辑分析仪等测试测量设备前端;
  • 通信基站射频收发链路的信号调理;
  • 医疗超声成像、工业无损检测等高精度测量系统。

二、关键性能参数亮点

ADA4938-1ACPZ-R7的核心性能围绕“高速、低噪声、差分适配”设计,关键参数包括:

参数项 典型值 核心价值 增益带宽积(GBP) 1GHz 支撑100MHz以上高速信号无失真放大 压摆率(SR) 4700V/μs 快速响应大摆幅信号,减少失真 噪声密度(eN) 2.6nV/√Hz@10MHz 保证微弱信号的信噪比(SNR) 共模抑制比(CMRR) 81dB 抑制共模干扰,提升差分信号质量 电源纹波抑制比(PSRR) 80dB 降低电源噪声对输出信号的影响 轨到轨输入输出 支持 充分利用电源电压范围,提升动态范围 输出电流 75mA 驱动重负载或长传输线无明显衰减

三、电气特性详解

1. 高速信号处理能力

  • 带宽与响应速度:1GHz增益带宽积可覆盖100MHz以上的高速信号(如100MSPS ADC的奈奎斯特频率50MHz),4700V/μs压摆率确保1Vpp信号的上升时间<200ps,6.5ns稳定时间满足ADC采样窗口的建立要求;
  • 差分输出设计:专为ADC差分输入优化,可直接匹配多数高速ADC的差分前端,减少单端转差分的额外电路与噪声。

2. 噪声与干扰抑制

  • 低噪声性能:2.6nV/√Hz的噪声密度在10MHz频段表现优异,结合40mA静态电流的平衡设计,实现噪声与功耗的合理 trade-off;
  • 抗干扰能力:81dB CMRR可有效抑制环境共模干扰(如电源噪声、空间电磁干扰),80dB PSRR降低电源纹波对输出的影响,提升系统信噪比。

3. 电源与功耗特性

  • 电源灵活性:支持单电源(4.5V11V)或双电源(±2.25V±5.5V)供电,最大电源宽度11V,适配不同系统的电源设计;
  • 静态功耗:40mA静态电流在高速放大器中处于合理水平,兼顾性能与功耗平衡。

4. 输入输出特性

  • 轨到轨输入输出:输入可接近电源轨(Vss+0.1V~Vdd-0.1V),输出摆幅可达电源轨(典型值±2.3V@±2.5V电源),充分利用电源范围提升信号动态范围;
  • 输入失调与温漂:4mV输入失调电压及18uV/℃温漂,满足一般精度要求,若需更高精度可通过外部调零电路优化;
  • 输出驱动能力:75mA峰值输出电流可驱动50Ω负载或长传输线,保证信号传输过程中无明显失真。

四、封装与工作环境

  • 封装形式:采用16-LFCSP-VQ(3x3mm)小封装,无铅无卤,适合高密度PCB设计,节省板级空间;
  • 工作温度范围:-40℃~+85℃工业级温度范围,可适应户外、工业现场等恶劣环境,可靠性高。

五、应用优势总结

ADA4938-1ACPZ-R7的核心优势在于**“高速+差分+小封装”的协同设计**:

  1. 高速性能匹配100MSPS以上ADC,减少信号失真;
  2. 差分输出直接适配ADC前端,简化电路设计;
  3. 轨到轨输入输出提升动态范围,低噪声保证信号质量;
  4. 3x3mm小封装适合高密度系统,工业级温度适应复杂场景。

该器件是高速数据采集、测试测量等领域的理想选择,可有效提升系统的信号质量与响应速度。

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