Clock phase-noise measurement examines the spectrum of the clock signal. This article first briefly reviews the measurement setups for clock jitter and phase noise. The relationship between jitter and the phase-noise spectrum is then described. Finally, a simple equation to convert the phase-noise...
作者: P Jitter 摘要: This application note on clock (CLK) signal quality describes how to measure jitter and phase-noise, including period jitter, cycle-to-cycle jitter, and accumulated jitter. It describes the relationship between period jitter and phase-noise spectrum and how to convert the ...
Brannon, Brad
Period Jitter and Phase Noise: Definition and Measurement Period Jitter Period jitter (J PER) is the time difference between a measured cycle period and the ideal cycle period. Due to its random nature, this jitter can be measured peak-to-peak or by root of mean square (RMS). We begin ...
This article discusses the effects of clock jitter and phase noise on sampled systems. A higher resolution data converters that can perform direct IF sampling come to market, system designers need help making performance-versus-cost trade-off decisions on low-jitter clock circuits. Many of the tra...
在任何的数字系统中,数字资料传输的精准是影响声音好坏的关键,时基误差Jitter越小,时间越为一致,声音就会更为透明、定位形体更为明确、更为真实活生,这也是为什么顶级讯源都会配有专属独立的主时钟同步给各个器材。 MC20专为High End数字器材所设计,如Music Server音乐服务器、DAC数字模拟转换器等等。MC20的核心为铷(...
深入理解时钟抖动 Jitter 抖动基本概念 绝对抖动 (Absolute Jitter) 是一个衡量时间点的不确定性概念,参考为理想时钟的时间点,该相对偏差量可能表示为一个离散时间的随机变量。绝对抖动造成的时间点不确定性可能会对很多采样电路有影响,比如在数据时钟恢复电路 (CDR) 中,需要利用时钟沿对数据的中心和数据变化的沿进行...
Clocking is of prime concern for generating phase noise in DACs, namely the DAC clock. This clock dictates when the next sample will be sent, so any noise in the phase (or timing) directly affects the phase noise of the output, as shown in Figure ...
Hi, I had a clock jitter problem on C5517 McBSP. I measured the clock out pin and found the clock phase noise was worse than clock in. How can I improve the clock jitter?10 年多前 Steve Tsang 10 年多前 TI__Mastermind 23785 points Are you referring to the CLKOUT pin of ...
There are a few things you can do to improve jitter/phase noise for glock generators: Power supply. If the noise floor you get is higher than what’s shown in the datasheet, then the noise may be from the power supply Loop filter. For clock gen...