EDN

Low Power Phase-Locked Loop with VCO

The 74HC/HCT4046A are phase-locked loop (PLL) with linear voltage-controlled oscillator (VCO) CMOS device having pins suited to 4046 in a 4000B series. These devices comply to JEDEC standard no. 7A.
Electronic Design

National Semiconductor single-chip PLL and VCO boasts low phase noise

National Semiconductor Corporation (www.national.com) has introduced the LMX2531, a monolithic phase-locked loop and voltage-controlled oscillator (PLL + VCO) integrated circuit with a frequency range ...
Nature

Phase-Locked Loop Design in CMOS Technology

Phase-locked loops (PLLs) are indispensable timing and frequency synthesis circuits, finding application in communication transceivers, clock distribution, navigation receivers and sensor interfaces.
EDN

Optimizing VCO PLL Evaluations & PLL Synthesizer Designs

Today’s mobile communications systems demand higher communication quality, higher data rates, higher frequency operation, and more channels per unit bandwidth. As much of this equipment is portable, ...
AZOM

Principles of Phase-Locked Loops (PLL)

Learn about the working principles of Phase-Locked Loops (PLL) and why they are widely used for applications where frequency tracking, resonance driving, and oscillator control are required.
Electronic Design

How to Design Very Wide Loop BW High-Performance PLL Frequency Synthesizers (Part 3)

A special technique produces very wide loop BWs in high-frequency PLLs (and hence, indirect (PLL) synthesizers), thereby achieving very low phase noise rivaling that of direct (MMD) synthesizers. A ...
Design-Reuse

100MHz-13.5GHz, Gen Phase-Locked Loop (PLL) IP block

Alphacore offers proven 100MHz to 13.5GHz Phase-Locked Loop (PLL) intellectually property (IP) design blocks with the industry's best core offerings w ...
EurekAlert!

Figure 2. Die micrograph of the proposed digital phase locked loop (PLL) (IMAGE)

The total power consumption of the proposed PLL is only 8.89 mW from a 1 V supply, which leads to a figure of merit of reference of -247.4 dB. Credit must be given to the creator. Only noncommercial ...
Nature

Optical Phase-Locked Loop Technologies in Communication Systems

Optical phase-locked loops (OPLLs) are closed-loop control systems that stabilise and synchronise the phase of a slave laser with respect to a reference source, enabling coherent optical generation ...