Product Design & Development

Inverted-mesa Crystal Vcxo

Thursday, May 03, 2001

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Inverted-mesa Crystal Vcxo

The VC-8000 VCXO is a 200 MHz VCXO designed to reduce system-accumulated jitter and noise. It uses an inverted-mesa quartz crystal to combine higher frequency, lower noise, increased stability, wider pullability range, and faster on/off times than traditional quartz crystal versions.

The VC-8000 works as a signal-enhancing filter for asynchronous communication system that have their own content data, clock, and error correction data. The unit acts like a high-Q filter, regenerating the incoming signal from scratch. The narrow bandwidth does not allow noise, jitter, or other perturbations to get through, resulting in a newly re-generated signal, free of noise.

It provides a voltage-controlled reference output frequency up to 200 MHz, with less than 1 psec jitter, and an overall frequency stability of (30 ppm. Units are available at output frequencies of 65 to 200 MHz.


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