Provided is a phase frequency detector for use in a phase locked loop (PLL) or a delay locked loop (DLL), the phase frequency detector including: an UP signal output unit having a first stage operated according to a reference clock delayed by a predetermined time and a reset signal, a ...
其中Natural Frequency是指一个系统在没有外界干扰或是阻尼的情况下,最终会达到的频率。对于PLL来说,Natural Frequency的选择会影响其环路的稳定性,而且与锁定时间和信道随机相位噪声也有一定的关系。一般来说,从系统稳定的角度看,Natural Frequency< ~1/15 reference frequency(input)。Natural Frequency 越大,环路系统...
DIFFERENTIAL PHASE-FREQUENCY DETECTORA phase-frequency detector (PFD) is electrically coupled to a charge pump of a phase-locked-loop (PLL). The PFD includes a first differential latch electrically coupled to the charge pump. The first differential latch drives a differential pair of increment ...
类型: Phase Frequency Detector 最大输入频率: 2 GHz 最小工作温度: - 40 C 最大工作温度: + 85 C 技术: Si 封装/ 箱体: TSSOP-20 高度: 1.05 mm 长度: 6.6 mm 封装: Tube 系列: MC100EP40 宽度: 4.5 mm 商标: ON Semiconductor 安装风格: SMD/SMT 工作电源电压: 3 V to 5.5 V 产品类型: ...
A phase/frequency detector, especially for VHF/UHF synthesisers, for modulators and for other ICs where an "in-lock" signal is required, provides a novel output signal for phase lock detection. The detector has two inputs (REF,N) to which signals of different phase are applied, gating mean...
A.相位频率侦测器(PhaseFrequencyDetector,PFD).doc,5GHz鎖相迴路設計 專題生: 湯姆克魯斯、om Cruise 指導教授: xxx ( 摘要—隨著科技的進步,產業技術不斷的進步,功耗已成為現今的射頻積體電路(RFIC)主要的設。 關鍵字— 導論 Times New Roman。大小為10,左右對齊。導
Linear phase frequency detector and charge pump for phase-locked loop Techniques for achieving linear operation for a phase frequency detector and a charge pump in a phase-locked loop (PLL) are described. The phase frequency detector receives a reference signal and a clock signal, generates first...
Fast-Lock Low-Jitter PLL with a Simple Phase-Frequency Detector一个简单鉴频鉴相器结构实现的快速锁定低抖动锁相环 用简单的鉴频鉴相器结构实现了一个快锁定低抖动的锁相环.鉴频鉴相器仅仅由两个异或门组成,它可以同时获得低抖动和快锁定的性能.锁相环中的电压控制振荡器由四级环形振... 陈莹梅,王志功,章...
Fast-lock low-jitter PLL with a simple phase-frequency detector A fast-locking,low-jitter,phase-locked loop (PLL) with a simple phase-frequency detector is proposed.The phase-frequency detector is composed of only two X... Y Chen,Z Wang,L Zhang - 《Journal of Semiconductors》 被引量: 6...
与使用其他类型的相位检测器(PD)(如 XOR 门和混频器)的 PLL 不同,由于这些 PD 的单调ϕIN范围有限,因此存在频率锁定范围有限的问题[5]。基于 PFD 的 PLL 的锁定范围不受限制。因为三态 PFD 的线性ϕIN范围为 -2π 至 2π(见图 1(b)),当ϕIN>2π(fREF>fVCO/N)或ϕIN<−2π(fREF<fVCO/...