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...
Since that time, the electronic phase-locked loop principle has been extended to other applications. For example, radio telemetry data from satellites used narrow-band, phase-locked loop receivers to recover low-level signals in the presence of noise. Other applications now include AM and FM demo...
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 ...
PLL (Phase Locked Loop): It is a phase-locked loop or a phase-locked loop, which is used to unify and integrate clock signals to make high-frequency devices work normally, such as memory access data. PLL is used for feedback technology in oscillators. For many electronic devices to work...
CMOS phase-locked loops in ISSCC 2023(Zhao Zhang) 你非答应了我 Phase Locked Loop(PLL)学习2 KEJI300 Phased LSTM: Accelerating Recurrent Network Training for Long or Event-based Sequences 这是一篇对lstm进行改进的论文,主要成果是可以解决当下lstm无法处理不规则输入序列的问题. 现有的lstm模型里面有三个...
Design of a Calibration Circuit for Adaptive PhaseLocked Loop in the 5GHz Range Using CMOS 180nm Technology Reza 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...
Used to synchronize the phase of two signals, the phase-locked loop (PLL) is employed in a wide array of electronics, including microprocessors and communications devices such as radios, televisions, and mobile phones. A PLL consists of a phase detector, a low-pass filter, a variable fre...
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 effective and logical way to debug difficult PLL pr...
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...