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analog circuits

  • 精密DAC和看门狗提高模拟输出安全

    Abstract: Using a DAC and a microprocessor supervisor, the system safety can be improved in industrial controllers, programmablelogiccontrollers (PLC), and data-acquisition systems. The analog output is set to zero-scale (or pin-programmable midscale) when amicroprocessor failure, optocoupler failure, or undervoltage condition occurs. A simple application is shown on how to implement thisfunction.

    标签: DAC 精密 看门狗 模拟

    上传时间: 2013-10-17

    上传用户:sjb555

  • 5 Gsps高速数据采集系统的设计与实现

    以某高速实时频谱仪为应用背景,论述了5 Gsps采样率的高速数据采集系统的构成和设计要点,着重分析了采集系统的关键部分高速ADC(analog to digital,模数转换器)的设计、系统采样时钟设计、模数混合信号完整性设计、电磁兼容性设计和基于总线和接口标准(PCI Express)的数据传输和处理软件设计。在实现了系统硬件的基础上,采用Xilinx公司ISE软件的在线逻辑分析仪(ChipScope Pro)测试了ADC和采样时钟的性能,实测表明整体指标达到设计要求。给出上位机对采集数据进行处理的结果,表明系统实现了数据的实时采集存储功能。

    标签: Gsps 高速数据 采集系统

    上传时间: 2014-11-26

    上传用户:黄蛋的蛋黄

  • 简单的多输出范围16位DAC设计

      Precision 16-bit analog outputs with softwareconfigurableoutput ranges are often needed in industrialprocess control equipment, analytical and scientificinstruments and automatic test equipment. In the past,designing a universal output module was a daunting taskand the cost and PCB real estate associated with thisfunction were problematic, if not prohibitive.

    标签: DAC 输出范围

    上传时间: 2014-12-23

    上传用户:如果你也听说

  • Stabilize Your Transimpedance Amplifier

      Abstract: Transimpedance amplifiers (TIAs) are widely used to translate the current output of sensors like photodiode-to-voltagesignals, since several circuits and instruments can only accept voltage input. An operational amplifier with a feedback resistor fromoutput to the inverting input is the most straightforward implementation of such a TIA. However, even this simple TIA circuit requirescareful trade-offs among noise gain, offset voltage, bandwidth, and stability. Clearly stability in a TIA is essential for good, reliableperformance. This application note explains the empirical calculations for assessing stability and then shows how to fine-tune theselection of the feedback phase-compensation capacitor.

    标签: Transimpedance Stabilize Amplifier Your

    上传时间: 2013-11-13

    上传用户:daoyue

  • 数字集成电路设计Digital Integrated Circuit Design

      This unique guide to designing digital VLSI circuits takes a top-down approach, reflecting the natureof the design process in industry. Starting with architecture design, the book explains the why andhow of digital design, using the physics that designers need to know, and no more.Covering system and component aspects, design verification, VHDL modelling, clocking, signalintegrity, layout, electricaloverstress, field-programmable logic, economic issues, and more, thescope of the book is singularly comprehensive.

    标签: Integrated Digital Circuit Design

    上传时间: 2013-11-04

    上传用户:life840315

  • 简化精密测量的高输入阻抗ADC

      High input impedance and a wide input range are twohighly desirable features in a precision analog-to-digitalconverter, and the LTC®2449 delta-sigma ADC has both.With just a few external components, the LTC2449 formsan exceptional measurement system with very high inputimpedance and an input range that extends 300mV beyondthe supply rails.

    标签: ADC 精密测量 高输入阻抗

    上传时间: 2013-11-02

    上传用户:ywcftc277

  • 高集成四通道工业控制应用的电压输出DAC

      Digital-to-analog converters (DACs) are prevalent inindustrial control and automated test applications.General-purpose automated test equipment often requiresmany channels of precisely controlled voltagesthat span several voltage ranges. The LTC2704 is ahighly integrated 16-bit, 4-channel DAC for high-endapplications. It has a wide range of features designed toincrease performance and simplify design.

    标签: DAC 集成 四通道 工业

    上传时间: 2013-11-22

    上传用户:元宵汉堡包

  • DA转换接口的射频IQ调制

      Linear Technology’s High Frequency Product lineupincludes a variety of RF I/Q modulators. The purpose ofthis application note is to illustrate the circuits requiredto interface these modulators with several popular D/Aconverters. Such circuits typically are required to maximizethe voltage transfer from the DAC to the baseband inputsof the modulator, as well as provide some reconstructionfi ltering.

    标签: DA转换 接口 射频 调制

    上传时间: 2013-10-19

    上传用户:FreeSky

  • 数据采集电路分析

      This application note features 8-, 10-, and 12-bit dataacquisition components in various circuit configurations.The circuits include battery monitoring, temperature sensing,isolated serial interfaces, and microprocessor andmicrocontroller serial and parallel interfaces. Also includedare voltage reference circuits (Application Note 42contains more voltage reference circuits).

    标签: 数据采集 电路分析

    上传时间: 2014-01-15

    上传用户:zq70996813

  • 独特的IC BUFFER增强运算放大器设计

    This note describes some of the unique IC design techniques incorporated into a fast, monolithic power buffer, the LT1010. Also, some application ideas are described such as capacitive load driving, boosting fast op amp output current and power supply circuits.

    标签: BUFFER 运算 放大器设计

    上传时间: 2013-11-12

    上传用户:671145514