200 MHz VCXO uses 'inverted mesa' crystal
23 May 2001
Telecoms, Datacoms, Wireless, IoT
Raltron Electronics' 200 MHz VCXO that reduces system-accumulated jitter and noise, the VC-8000 VCXO, uses an inverted-mesa quartz crystal to combine higher frequency, lower noise, increased stability, wider pullability range, and faster on/off times than is possible with an ordinary quartz crystal.
According to the company, VC-8000 works as a signal enhancing filter for asynchronous communication systems that embed their own content data, clock, and error correction data. The unit acts like a high-Q filter, re-generating the incoming signal 'from scratch.' The unit's narrow bandwidth does not allow noise, jitter, or other perturbations to get through, resulting in a newly regenerated signal, free of noise.
The oscillator provides a voltage controlled reference output frequency up to 200 MHz, with less than 1 ps jitter, and an overall frequency stability of +30 ppm. Units are available at any desired output frequency from 65 to 200 MHz, but specifically popular frequencies (such as 155,52 MHz for OC3 applications, 166,6285 MHz for XDM applications, or 125 MHz for Gbit Ethernet) have a favourable price and delivery.
The VC-8000 is a compact 9 x 14 x 5,5 mm SMD.
Insight Memec
(021) 674 4124
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