Electronic Design

PLL Synthesizer Offers High Output Frequency And Lowest Phase Noise

The Texas Instruments LMX2581 phase-locked loop (PLL) frequency synthesizer integrates a voltage-controlled oscillator (VCO) that covers from 50 to 3760 MHz and offers perhaps the best phase-noise ...
Electronic Design

Phase-Noise Modeling, Simulation, and Propagation in Phase-Locked Loops (Part 2)

Some brief theory and typical measurements of phase noise. Standard analysis of PLL phase noise used by most CAD applications. How to produce the lowest phase noise at a PLL output. A standard design ...
EDN

Int-N PLL/synthesizer suppresses system noise

The LTC6945 6-GHz integer-N PLL/synthesizer features –226dBc/Hz normalized closed-loop in-band phase noise, –274-dBc/Hz normalized in-band 1/f noise, –157-dBc/Hz wideband phase noise floor, and ...
EDN

Product How-to: Ultra-low noise linear regulators for powering PLL/VCO and clocking ICs

Wideband communication systems usually require an ultra-low noise regulator to power the VCOs and PLLs. The regulator must also be able to reject any ripple presented at its input. In a typical system ...