Clipped sinewave clock

[pfaisalbe]

Hi


I have been using square wave output oscillator to feed FPGA . I have seen oscillators with clipped sinewave output. If I use those oscillators (replacing the square wave output oscillator), Would it cause a problem ?

Based on my little knowledge , No need to be a square wave , as long as the frequency is maintained. When it is a clipped sine wave , I would think it has both positive and negative half.


Also ouput impedance of oscillator is specified as 10 Kohm // 10 pF. How this will affect ?



Here is the data sheet



**broken link removed**



Thanks

 

[Black Jack]

Using clipped sin oscillator directly is incorrect
1) slow edges
2) 0.8 Vp-p Output
You need use additional external circuits.
See attachment.

 

[gavin23]

I don't think you can simply replace your LVCMOS output XO with a clipped sinewave output XO and expect the same results. The clipped sinewave, is just that, a sinewave which means its edges will not be sharp as in the case of a square wave output XO.

I am not an expert in this area but that's my 2 cents.

If you've learned better since please let me know.

Thanks,
Gavin