What is a digital phase-locked loop?

What is a digital phase-locked loop?

A phase-locked loop (PLL) is an electronic circuit that controls an oscillator so that it maintains a constant phase angle relative to a reference signal. In communications, the oscillator is usually at the receiver, and the reference signal is extracted from the signal received from the remote transmitter.

What are the application of phase-locked loop?

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.

What are the applications of phase-locked loop?

What is PLL FPGA?

Many FPGAs use a phase-locked loop (PLL) to increase the internal clock speed. The iCE40 on the IceStick allows you to run up to 275 MHz by setting the internal PLL with the onboard 12 MHz reference clock. However, you will often find the higher clock speed increases the chances of glitches in your design.

What is lock range and capture range in PLL?

Lock range (and hold range) shows how far the PLL frequency can track an input signal. Capture range (and pull-in range) shows how far from the free running frequency the VCO will move to lock onto an input signal.

Why PLL is used in FPGA?

What is Mmcm in FPGA?

Mixed-Mode Clock Manager(MMCM) module[2] is basically provided by Xilinx, a supplier of programmable logic devices that develops FPGA and synthesis tools. MMCM module has a function to generate multiple clocks with different frequencies using the input clock named CLKIN1.

What are 3 running conditions of PLL?

Thus, a PLL goes through three stages (i) free running, (ii) capture and (iii) locked or tracking. Capture range: the range of frequencies over which the PLL can acquire lock with an input signal is called the capture range.

Why loop filter is used in PLL?

Loop filter: This filter is used to filter the output from the phase comparator in the phase locked loop, PLL. It is used to remove any components of the signals of which the phase is being compared from the VCO line, i.e. the reference and VCO input.