EDN

Signal Chain Basics #96: Active Loop Filter Designs

At the heart of a clocking device is the phased-locked loop (PLL). A key part of the PLL is the loop filter, which converts correction currents from the PLL charge pump into a control voltage for the ...
EDN

Understanding in-loop filtering in the HEVC video standard

High Efficiency Video Coding (HEVC) is a video compression standard, a successor to H.264/MPEG-4 AVC (Advanced Video Coding), jointly developed by the ISO/IEC Moving Picture Experts Group (MPEG) and ...
Electronic Design

Use PWM To Maintain Motor Speed And Phase While Eliminating Loop Filter

In designing a simple spectroscopy setup, we needed to synchronize the speed of a small, inexpensive dc motor precisely to 6000 rpm (100 Hz). Our first idea was to take a phase-frequency detector type ...
The Scientist

Sartorius Stedim Biotech launches two Single-use Sartocon® Loop Assemblies

Sartorius Stedim Biotech (SSB), a leading international supplier for the biopharmaceutical industry, today announced its polyethersulfone membrane (PESU) is now integrated into two new, sterile ...
Forbes

Apple Loop: New iPhone Power Problems, Expensive MacBook Air Launched, Apple Confirms Beauty Filter

This week’s Apple Loop includes the launch of the iPad Pro and MacBook Air, secrets of the iPhone XR, Apple’s latest battery throttle, confirmation of its new selfie mode, updates to macOS and iOS, ...