EDN

Freebie PLL design tool debuts with PLL hardware

Norwood, Mass.—RF chip maker Analog Devices, Inc. (ADI) is rolling out a new generation of its existing ADIsimPLL PLL (phased-locked loop) circuit design and evaluation tool, as well as two new PLL ...
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 ...
EDN

Software PLL syncs to line using moving-average filter

A SPLL (software phase-locked loop) is used in this Design Idea to generate a synchronous reference to common-mode powerline interference in two-electrode ECG amplification. Though intended for ECG ...
Electronic Design

How to Design Very Wide Loop BW High-Performance PLL Frequency Synthesizers (Part 1)

This is Part 1 of a three-part series. As modern wireless communications systems (mainly superheterodyne radio transceivers) are now required to deliver higher performance than ever before, they’re ...