锁相环和锁频环在数字costas环中的应用.pdf 一篇关于costa环路的新颖设计方案，包含大量的仿真图和性能分析，对学习锁相环有很大帮助-And frequency-locked loop PLL digital costas loop in the application. Pdf a novel about the costa loop design, contains a large number of simulation

　本文给出了一种新型智能电子秤的设计方案。该系统以单片机作为中心控制单元, 采 用V ö F 型模数转换、锁相倍频、非线性校正和数字滤波等技术。-　Th is paper p resen t s a new design fo r the in telligen t elect ron ic scale. The m icro2 con t ro ller w as u sed as the cen t ral con

MT402是一种单声道USB麦克风方案，内置sigma-delta ADC、麦克风前置增益放大器、 锁相环、音量增益调节器和USB收发器。它是非常适合USB电脑麦克风录音的应用。即插即用，无需安装驱动程序。-MT402 is a mono USB microphone solutions built sigma-delta ADC, microphone pre-amplifier gain, PLL, volume gain

实现方波发生器的方法很多，但主要有三个方案：采用单片函数发生器 8038，采用锁相式频率合成器，采用单片机编程。-There are many methods to realize the square wave generator, but there are three main schemes: using single chip function generator 8038, adopting the phase locked