The clipped sinewave is the simplest output for a TCXO, it's usually just a
capacitor connected between the emitter of the oscillator and the output pin.
You have to be careful what you connect to it, it's possible to throw the temp
compensation out of tolerance. Most CMOS PLL chips have a reference frequency
input that handles it well. If you're rolling your own PLL from SSI or MSI
chips, you probable want to build up a buffer to make the clipped sinewave into
TTL or HCMOS levels, or pay extra for a TCXO with the needed circuit built in.




On Sun, 17 Jul 2005 20:34:25 GMT, "Mario Bros" wrote:

Hi folks,
I would have to ask a clarification regard to the TCXO.
They are found with output TTL, HCMOS and CLIPPED SINE WAVE.
It is just with respect to this last type that I would want to have
elucidations on when it is convenient to employ it, which the advantages and
the disadvantages and which the extension of spectral harmonicas.
In synthesis, from the plan point of view, which are the motivations that
they make to incline towards a Clipped oscillator?

Anticipated thanks.

73's de IK6GQC Rocco