Design-Reuse

Phase frequency detector and charge pump - SMIC CMOS 0.18 um

The device consists of phase frequency detector (PFD), charge pump and lock detector (LD). PFD compares phases of a divided VCO signal and a divided reference oscillator signal. PFD feeds control ...
EDN

Phase/frequency detectors

Two ECL three-state phase/frequency detectors have been designed to be used in PLLs, clock management, and various broadband communication signal synchronization applications. Packaged in a 20-pin ...
EDN

Phase-Locked Loop Applications

This application note discusses phase frequency detector characteristics that affect phase-locked loop (PLL) dead band and jitter performance. In PLLs that employ charge pump loop filter designs the ...
Electronics Weekly

TI adds phase detector and PLL to precision RF synthesiser

Texas Instruments has introduced a wideband frequency synthesiser with integrated low phase-noise voltage-controlled oscillator. The device combines a low noise phase-locked loop (PLL) and a phase ...
Design-Reuse

Unlock and Load: Characterizing Today's PLLs

The phase-locked loop (PLL) has become one of the most versatile tools in the communication sector. PLLs are at the heart of circuits and devices ranging from clock recovery blocks in data ...
Electronics Weekly

A tiny useful discovery about the 4046 phase locked loop chip

Whilst poring over 4046 phase locked loop data sheets, I noticed yet another subtle useful difference between the the later faster 74HC4046 (diag from NXP data sheet) and the earlier slower CD4046.
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 ...