Low-Voltage PECL Clocks Deliver Frequencies From 77 To 330 MHz

May 10, 2004

Available in crystal oscillator (CCPD-033/034) and voltage-controlled crystal-oscillator (CVPD-034) configurations, a series of low-voltage PECL clock generators offers clock frequencies ranging from 77 to 330 MHz. The outputs, which are 3.3-V differential signals, have less than 0.5 ps rms of jitter from 12 kHz to 20 MHz. The signals also feature a low phase noise (−145 dBc/Hz at 100 kHz) with no phase-locked-loop multiplication. Clock versions have a stability of ±20 to ±100 ppm. The CCPD-033/034 and CVPD-034 are available in standard 5- by 7-mm SMD packages and can be ordered on 16-mm tape and reel in quantities of 100, 500, and 1000 units. Versions with an extended operating temperature range of −40°C to 85°C and other custom specifications are available. Prices for the clocks and VCXOs start at $4.33 apiece in production volumes.

Crystek Crystals Corp.www.crystek.com

About the Author

Roger Allan

Roger Allan is an electronics journalism veteran, and served as Electronic Design's Executive Editor for 15 of those years. He has covered just about every technology beat from semiconductors, components, packaging and power devices, to communications, test and measurement, automotive electronics, robotics, medical electronics, military electronics, robotics, and industrial electronics. His specialties include MEMS and nanoelectronics technologies. He is a contributor to the McGraw Hill Annual Encyclopedia of Science and Technology. He is also a Life Senior Member of the IEEE and holds a BSEE from New York University's School of Engineering and Science. Roger has worked for major electronics magazines besides Electronic Design, including the IEEE Spectrum, Electronics, EDN, Electronic Products, and the British New Scientist. He also has working experience in the electronics industry as a design engineer in filters, power supplies and control systems.

After his retirement from Electronic Design Magazine, He has been extensively contributing articles for Penton’s Electronic Design, Power Electronics Technology, Energy Efficiency and Technology (EE&T) and Microwaves RF Magazine, covering all of the aforementioned electronics segments as well as energy efficiency, harvesting and related technologies. He has also contributed articles to other electronics technology magazines worldwide.

He is a “jack of all trades and a master in leading-edge technologies” like MEMS, nanolectronics, autonomous vehicles, artificial intelligence, military electronics, biometrics, implantable medical devices, and energy harvesting and related technologies.