PLL环路参数设计 上次介绍了PLL的环路分析,本次介绍PLL环路参数的设计。环路参数主要是设计滤波器的电容电阻值。电荷泵电流和VCO的增益我们暂且定为已知量(它们与噪声性能相关)。 首先是考虑环路稳定性,… 三个皮匠 [转]Megatron-LM源码系列(三):详解Pipeline模型并行训练实现 原文链接: Megatron-LM源码系列(三):详...
本文将分享使用CppSim进行PLL设计的基本流程，内容主要源于Michael H. Perrott的原著。文章涵盖软件安装、项目理解、参数设定、增益计算、滤波器设计、参数波动影响分析、噪声性能评估以及PLL的其他电路设计。首先，尽管软件手册注明仅支持Windows 2000和XP，但实际在Windows 10上也可运行，启动后，设计助手在桌面...
杂散抑制Spurs:-80 dBc/Hz 4. Performing Basic Noise Analysis Using thePLLDesign Assistant 使用PllDesign完成PLL噪声的行为级仿真。设置好相噪曲线的刻度范围,Noise axis limits: 1e4 1e8 -170 -60。原文依次使用了2阶的ΣΔ频综(噪声传递函数[1 -2 1])和7-bit PFD/DAC频综,最终的相噪结果如图6所示。
M.H. Perrott, "Behavioral simulation of fractional-N frequency synthesizers and other PLL circuits," IEEE Design & Test of Computers, vol. 19, pp. 74-83, Jul. 2002. M.H. Perrott, "Fast and Accurate Behavioral Simulation of Fractional-N Synthesizers and other PLL/DLL Circuits", Design Aut...
CppSim Library: PWM Amplitude Resolution for an RF-DAC Example (pwm_polar_tx.tar.gz) Behavioral Simulation of a High Speed Limit Amplifier with Fast Offset Compensation Using CppSim and the PLL Design Assistant Programs CppSim Library: Offset Compensation Example ...
CppSim automatically generates, compiles, and runs C++ code corresponding to the schematic design that you create. Graphical Interface: Systems are specified and simulated within a schematic editor, Sue2, and results are viewed using a waveform viewer (CppSimView or GTKWave). ...
In many application DPLL(digital based pll) are better than typical analog PLLs. The main purpose of this paper is to present in detail about modeling of DPLLs verifying its function by simulations and developing the architecture of a Digital Clock and Data Recovery, already presented in [1]...
"CppSim/VppSim is a great tool for high-speed link applications to achieve both fine timing accuracy and speed when capturing interactions between adaptive equalization algorithms and clock-and-data-recovery loops. Links typically require simulation of long bit sequences in order to capture inter...
Day 1 PLL manual学习 本文旨在记录使用CppSim软件做PLL仿真的一些体会或是想法,有兴趣者欢迎一起交流探讨。 保持学习。 前言 "Discover a faster and easier way to perform system level simulation of complex mixed-signal circuits." CppSim是由Michael H. Perrott和其先前的学生团队研发的一款行为级仿真软件。关...
CppSim/VppSim is free for academic and commercial use, and the install file includes all files necessary to run CppSim/VppSim along with supporting programs such as NGspice and the PLL Design Assistant. However, it is also useful to separately install Python, Octave, or Matlab® in order ...