Articles


High Frequency Compact VCXO Reduces Phase Jitter By 80%

July 21, 2010

Suited For Fixed Communication Applications

Belvidere, Illinois – NDK announces the availability of the NV7050SAHigh Frequency series, an SMD VCXO (Voltage Controlled Crystal Oscillator), which through proprietary high frequency fundamental mode crystals is able to obtain frequencies upwards of 700 MHz (available in a range of 170 to 700 MHz) without the use of PLL frequency multiplication methods. The end result is the reduction of phase jitter as low as 38.0 fs (femtoseconds) (100 fs max.), a reduction of more than 80% when compared to previously available products in this class. The NV7050SA was developed in response to the demands of high-speed wireless broadband networks and base stations for mobile communication. These products require high frequency clock signals between 600 MHz to 700 MHz for the optical transmission and optical multiple-wavelength transmission used. The compact L= 7.0 x W= 5.0 x H= 1.6 mm package consumes just 10% of the volume of comparable VCXOs on the market.

The NV7050SA is available in a frequency range of 170 to 700 MHz with a nominal frequency tolerance of ±50 ppm. The APR (absolute pull range) is ±100 ppm. It operates on 3.3 VDC over a temperature range of -40 to +85ºC. Output is available as LVPECL or LVDS. They are in lead-free packaging which meets the requirements for re-flow profiling using lead-free solder and are RoHS compliant.

"The growth of high-speed wireless broadband coupled with the miniaturization of mobile communication base stations drove the development of a compact VCXO that would deliver a high frequency very accurate frequency source. The NV7050SA delivers superb jitter performance to help improve the signal quality in optical networks," said Ken Hennessy, President, NDK America, Inc.

Delivery for the NV7050SA series is 8 to 12 weeks. Pricing for 1,000 pieces of a 622.08 MHz NV7050SA is about $15.00 eaach. Qualified engineering samples may be ordered. A complete set of technical data and application engineering support is available on-line at www.ndk.com.

About NDK
NDK is a leader in the field of quartz crystal electronic components. They offer a broad range of frequency control products that can be found in communication and automotive applications around the world. Their manufacturing process is vertically integrated from the growing of synthetic quartz to end product. The corporate focus is quality. They are headquartered in Tokyo Japan and their North American headquarters is located in Belvidere, IL. They support their sales with design centers in North America, Europe, and Asia. In North America NDK has a complete network of manufacturer's representatives to maintain local customer service.

SOURCE: NDK

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