EDN

Managing phase rotation in PLL synthesizers

Many RF systems, especially those related to the telecom market, need reference signals with accurate and stable frequencies. Single-chip PLLs (phase-lock loops), such as those that several IC ...
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

Low-Noise Signal Generation And Fast Frequency Settling Time Can Coexist – Overcoming The Conflict

Figure 1: The S-Series SGA analog signal generator offers frequency switching speeds of less than 100 µs and typical phase noise at 1 GHz of -135 dBc/Hz at a 20-kHz offset. Figure 2: Shown is a graph ...
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 ...
Electronic Design

VCO Transforms Sound Card Into Precision DC-Coupled ADC

Personal-computer sound cards are sometimes used for analog audio signal acquisition. Also, the Web features many free programs that implement virtual two-channel oscilloscopes by acquiring signals ...
Design-Reuse

Analysis and Summary on Clock Generator Circuits and PLL Design

The demand for analog and mixed-signal-based integrated circuits (ICs) has surged due to the increasing reliance on electronic-based applications across industries. As the world transitions to more ...