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What are the application of PLL?
Applications of Phase-Locked Loop It is used in motor speed controls and tracking filters. It is used in frequency shifting decodes for demodulation carrier frequencies. It is used in time to digital converters. It is used for Jitter reduction, skew suppression, clock recovery.
How do PLLs work?
In the basic PLL, reference signal and the signal from the voltage controlled oscillator are connected to the two input ports of the phase detector. The output from the phase detector is passed to the loop filter and then filtered signal is applied to the voltage controlled oscillator.
What is BCD stand for?
Binary Coded Decimal
(Binary Coded Decimal) The storage of numbers in which each decimal digit is converted into a binary number and stored in a single 8-bit byte. For example, a 12-digit decimal number would be represented as 12 bytes. BCD uses more storage for numbers than binary encoding (see below).
How to understand the working principle of PLL?
In order to understand PLL working principle, let us understand three stages of PLL (Phase Locked Loop). • Free running state: Initially when there is no reference frequency signal is applied, PLL is said to be in free running state.
How does a phase locked loop ( PLL ) work?
The input signal is directly proportional to the output frequency of the VCO (fo). The input and output frequencies are compared and adjusted through the feedback loop until the output frequency is equal to the input frequency. Hence, the PLL works like free running, capture, and phase lock.
What are the components of a PLL circuit?
About PLL: The term PLL is the short form of Phase Locked Loop. The simple PLL circuit consists of Phase Detector, Loop filter, VCO and frequency divider. The PLL circuit is part of RF frequency synthesizer or Local Oscillator found in RF Transceiver i.e. RF frequency converters.
What can PLL be used for in AM detector?
The PLL can be used as an AM detector for demodulating the amplitude modulated signals. The following figure shows AM detection using PLL. These are the two inputs to the multiplier block. The output is the product of the two inputs as calculated below.