微波集成锁相环芯片ADF4106及其应用

结合美国ADI公司推出低功耗宽带集成锁相环芯片ADF4106的性能特点以及锁相环频率合成器的原理，给出了用ADF4106锁相环芯片设计频率合成器的具体方法，并对其在实际应用中的哭声，杂散，谐波等性能参数进行了比较详细地分析和讨论。     

英飞凌基于ARM内核的汽车级电机控制集成芯片

本文介绍了常见的几种在汽车车身上的电机应用,包括直流有刷电机控制,有霍尔/无霍尔直流无刷电机控制和永磁同步电机控制,不论是哪一种电机控制方案,英飞凌公司推出的基于ARM内核的Embedded Power IC都是最理想的选择。     

ASK无线电接收芯片RX3400的特性及应用

ASK无线电发射芯片配套,用于数据信号无线传输,数据速率可达50kb/s。 1.内部结构 RX3400内部结构包含有低噪声放大器(LNA)、混频器(Mixer)、锁相环(PLL)、压控振荡器(VCO)、分频器(÷64)、晶体振荡器、相频检波器(PFD)、充电泵、逻辑放     

智多微电子与中芯国际联合推出阳光二号C626手机应用芯片

智多微电子（上海）有限公司和世界领先的集成电路代工公司之一，中芯国际集成电路制造有限公司（以下简称“中芯国际”）近日共同宣布由智多设计的“阳光二号C626”手机应用芯片在中芯国际成功量产。     

便携式设备音频接口芯片AN2906F JM及应用

概述 AN2906FJM是一种专门为个人数字助理(PDA)、笔记本电脑和语言芯片(IC-Recorder)等而设计的音频输入/输出(I/O)接口IC。这种新型IC内置一个扬声器放大器、一个耳机放大器、一个麦克风放大器和电子音量及自动增益控制(AGC)等电路。AN2906FJM的主要特点如下: (1) 采用44脚QFNO44-P-0606A,高度是0.8mm的小薄型封装:     

智能化可重构硅光集成器件及芯片应用研究

可重构硅光集成器件和芯片是实现智能化光通信系统的关键技术,其小尺寸、低能耗、低成本、高灵活性等特性为新一代光通信等应用带来了新的发展机遇。总结和讨论了一系列新型热可重构硅光集成器件及芯片,包括可调谐滤波器、光开关代表性功能器件。这些器件及芯片具有设计便捷、工艺简单、兼容等突出优点,被广泛应用于光互连、量子光学和微波光子学等。     

数字通道芯片AD6620的原理及应用

AD6620是美国ADI公司推出的专用数字通道器件，文中介绍了它的工作原理及参数设置方法，并通过直接中频数字接收设计实例对AD6620的应用进行了分析。     

运动控制芯片MCX314及应用

本文介绍了运动控制芯片MCX314及在反应单元控制模块中对机械臂步进电机的控制原理和实现方法,最后对该系统的安全和可靠性进行了分析。     

完全集成的PLL发送器ATA5749及其应用

ATA5749是一种适合于在300～450 MHz工作的分数N PLL发送器,是专为轮胎气压计、遥控无键入口和被动式无源入口汽车应用而设计的.介绍ATA5749的主要特点、工作原理及其应用电路.     

完全集成的PLL发送器ATA5749及其应用

ATA5749是一种适合于在300-450MHz工作的分数NPU。发送器．是专为轮胎气压计、遥控无键入口和被动式无源入口汽车应用而设计的。介绍ATA5749的主要特点、工作原理及其应用电路。     

RF integrated inductor modeling and its application to optimization-based design

In this paper an optimization-based approach for the design of RF integrated inductors is addressed. For the characterisation of the inductor behaviour the double ??-model is used. The use of this model is twofold. On one hand it enables the generation of the inductor characterisation in a few seconds. On the other hand its integration into the optimization procedure is straightforward. For the evaluation of the model element values analytical expressions based on technology parameters as well as on the device geometric characteristics are used. The use of a technology-based methodology for the evaluation of the model parameters grants the adaptability of the model to any technology. The inductor analytical characterization is integrated into an optimization-based tool for the automatic design of RF integrated inductors. This tool uses a modified genetic algorithm (MGA) optimization procedure, which has proved its validation in previous work. Due to the design parameter constraints nature as well as the topology constraints, discrete variables optimization techniques are used. The accuracy of the results is checked against a non-commercial software.     

555时基电路的研究与应用

首先介绍了555时基电路的结构与工作原理,重点讨论了555时基电路的四种基本工作模式,即单稳态、双稳态、无稳态和定时工作模式,最后列举了555时基电路在电子、电器等领域中的应用实例。实例电路结构合理,设计新颖,针对性和实用性强,具有普遍性、示范性和经典性。     

基于NE555方波脉冲发生器的设计及应用

为了进行铝合金脉冲MIG焊实验,将NB-500晶闸管直流弧焊电源改造成脉冲电源,采用NE555时基集成电路,设计了频率、占空比、峰值和基值均可独立调节方波脉冲发生器。该方波脉冲发生器与NB-500焊机原有控制电路相结合,系统工作稳定,实现了铝合金脉冲MIG焊接。     

一种有效的话音静噪综合处理方法及其应用

介绍了话音静噪的含义及调幅（AM）话音通信中静噪遇到的难题,论述了AM信号的中频数字 化 解调原理和话音静噪原理,提出了一种有效的AM信号调制度判别方法,最后举例说明了在实 际应用中 如何利用AM调制度判决方法来解决话音静噪问题。     

基于随机加权估计的Sage自适应滤波及其在导航中的应用

为了克服Kalman滤波和Sage自适应滤波的缺点,在分析基于新息向量、残差向量和状态改正数向量的自适应协方差估计存在问题的基础上,提出根据新息向量、残差向量和状态改正数对滤波精度影响的不同程度,采用随机加权法对新息向量、残差向量和状态改正数进行估计,以得到观测噪声协方差矩阵和系统动态噪声协方差矩阵.进一步,利用随机加权法对观测噪声协方差阵和系统噪声协方差阵进行估计,以提高动态导航定位的滤波解算精度.研究结果表明,基于随机加权估计的Sage自适应滤波效果明显优于基于算术平均值估计的滤波方法.     

A linear NMOS depletion resistor and its application in an integrated amplifier

A linear resistor has been realized by using NMOS depletion transistors operated in the triode region. While such a resistor is mainly intended for single-ended and first quadrant mode of conduction, where it achieves a nonlinearity of .03% full scale in the 0-10 V voltage range, it can also be used as a floating element and operated in the first as well as third quadrant mode of conduction (i.e. with V and I both either positive or negative) with some degradation in linearity and voltage range. A linear noninverting amplifier with an accurately controlled gain of 16 has been realized by using a high open-loop gain (90 dB) operational amplifier and dimensioning the simulated resistors to set the closed-loop gain.     

Cut-and-paste customization of organic FET integrated circuit and its application to electronic artificial skin

The concept of cut-and-paste customization is introduced for the first time in designing integrated circuits based on mechanically flexible organic field-effect transistors, and is applied to electronic artificial skin. The electronic artificial skin comprise of three separate integrated circuits that are a pressure-sensor array, row decoders, and column selectors to read out pressure information over a large area. All of three integrated circuits are scalable in size because the pressure-sensor array is a simple repetition of sensor cells and the row and column decoders adopt wired-NAND circuits, which enables the cut-and-paste customization in size. The physical cut-and-paste procedure is employed by cutting a part of the integrated circuits and pasting it to another integrated circuit with a connecting plastic tape. The integrated circuits are designed with a standard SPICE simulator and layout design tool, and the operation is confirmed by measurement.