鎖相環 Phase-Locked Loop 一個鎖相環(PLL)是一個設計用於同步板子時脈與外部的時脈訊號的電路。鎖相環電路會比較外部訊號與電壓控制的石英震盪器(VCXO)之間的相位,接著會去修正震盪器的時脈訊號去與參考訊號的相位之間吻合。因此,訊號之間將會精密的同相。 當在處理訊號擷取時,由於鎖相環會使得多個裝置共享一個參考訊號
The phase-locked loop (PLL) is one of the key building blocks in many communication systems; providing a means for maintaining timing integrity and clock synchronization. The PLL can be used in various applications such as timing extraction from data streams, jitter mitigation and frequency synthesi...
Charge-Pump Phase-Locked LoopA TutorialPart IIJeffrey S. Pattavina
Can digital phase-locked loops offer excellent performance with a lower cost of implementation? M.H. Perrott 2 Just Enough PLL Background … What is a Phase-Locked Loop (PLL)? ref(t) out(t) e(t) ref(t) out(t) v(t) e(t) v(t) ref(t) e(t) Phase Analog v(t) Detect Loop ...
or other complex math within this tutorial. I decided to keep it simple. But, before we go into any detail, first a little bit of history of the Phase-Locked Loop and prior to that with the superheterodyne. I n the early 1930's, the superheterodyne receiver was king. ...
Designing and debugging a phase-locked loop (PLL) circuit can be complicated, unless engineers have a deep understanding of PLL theory and a logical development process. This article presents a simplified methodology for PLL design and provides an effect
Design of a Calibration Circuit for Adaptive PhaseLocked Loop in the 5GHz Range Using CMOS 180nm TechnologyReza MirAlvandi 摘要 本文介绍了锁相环(PLL)的设计,其中包含一个数字控制校准振荡器电路,用于频率适应。适应过程是在振荡器性能的指导下以数字方式进行的。当振荡器偏离指定频率范围时,主动校准电路会检...
Phase-Locked Loops 的思考(一) 宇文青霜发表于通向模拟集... CMOS phase-locked loops in ISSCC 2023(Zhao Zhang) 你非答应了我 Phase Locked Loop(PLL)学习2 KEJI300 Prometheus监控实践:Kubernetes集群监控 本文将总结一下我们目前使用Prometheus对Kubernetes集群监控的实践。 我们选择Prometheus作为监控系统主要在以...
What is a phase-locked loop used for? The main goal of a PLL is to synchronize the outputoscillatorsignalwith a reference signal. Even if the two signals have the same frequency, their peaks and troughs may not occur in the same place. Simply put, they do not reach the same point on...
A phase-locked loop is often used to generate a signal at a particular frequency. A phase-locked loop, in its most basic form, comprises a closed loop frequency control circuit which detects a phase difference between input and output signals to control an oscillator, such as for example, a...