charge-pump对PLL spurs的定量分析 公式(4)给出了明确的优化PLL带内噪声尤其是spurs的方法,减少失配是最优解,文章夜给出了常见的几种charge-pump电路结构: 常见charge-pump电路结构 前面两种结构,分别由于电流源建立非线性和开关速度等非理想因素,其性能没有第3个好,该结构也是charge-pump的经典结构,很多电路也是在...
charge-pump电路仿真要点：（1）DC 输出范围(Vtune范围)（2）电流mismatching,PVT和MC仿真；、 (3)输出电流phase noise;两篇论文都是该领域的经典，charge-pump电流是模拟锁相环系统的关键模块，影响PLL带内噪声，尤其是小数/参考杂散的大小。数字锁相环中该模块被TDC替代，TDC的精度与charge-p...
锁相环 PLL 第6讲 曲径通幽 Charge-Pump PLLs, 视频播放量 9100、弹幕量 13、点赞数 259、投硬币枚数 238、收藏人数 90、转发人数 8, 视频作者 鳌中堂讲电路, 作者简介 全世界电路爱好者,联合起来! Electronics workers of all lands, unite!,相关视频:锁相环 PLL 第4讲
CHARGE PUMP IN PLL CIRCUITPROBLEM TO BE SOLVED: To reduce noise in a PLL circuit.DIORIO CHRISTOPHER Jクリストファージェイディオリオ
【锁相环PLL】2.1.4 Charge Pump PLL Transfer Function【锁相环PLL】2.1.4 Charge Pump PLL Transfer F大马庆编辑于 2024年12月04日 18:09 11:20 超简单的PFD&CP传输函数 CP的输出阻抗看作Z1 那么整个PFD&CP的传输函数就再乘以Icp/2π 13:55 BW<Fref/10 由于前面用连续信号Vcont代替了离散的充电pulse...
The Charge Pump PLL (phase-locked loop) block automatically adjusts the phase of a locally generated signal to match the phase of an input signal. It is suitable for use with digital signals. This PLL has these three components: A sequential logic phase detector, also called a digital phase...
An adder 116 adds the two output pulses and outputs them as charge pump output signals 30 for adjusting the PLL circuit. In the case that the two output pulses are almost equal, they are mutually cancelled by addition and the PLL circuit is fixed to a certain frequency. Since the same ...
这个主要决定了你的环路系数，推导系统传递函数时必须考虑。一般不会取太小，如果带宽较大的话。
为了评估第六-A 节中描述的分频器\Delta\Sigma调制器的影响,在单输入-单输出 (SISO) 配置中,16 GHz CP-PLL 与外部 145 GHz 雷达平台 [3] 一起进行了验证。CP-PLL合成了T_{chirp}= 27.2 μs和T_{reset }= 1 μs的1.2 GHzBW_{chirp}(从15.5 GHz到16.7 GHz),用于测量目标范围和速度。CP-PLL乘以...
This paper present a dynamic matched charge pump to achieve small current mismatch and resist the current variation.Small current mismatch means small spurs in pll,and the constant current can make us predict the bandwidth of the pll precisely.Circuits design is based on the SMIC 0.18 μm proces...