LMX2582 sine or square wave output (RF Synthesizer with Integrated VCO)

[sorin]

Please can anyone tell me what output should have this Synthesizer, sinewave or squaewave?
Ther are 2 type of outputs, direct from VCO and the other from the counter output
Can we use this Ic as a signal generator?

Thanks in advance!

http://www.ti.com/product/lmx2582

Datasheet:
http://www.ti.com/lit/ds/symlink/lmx2582.pdf

[danadak]

The output of the VCO is a squarewave, the counter out a pulse
with varying duty cycles depending on /n and fractional divider
logic.

If you want a Sine, Triangle, Saw, Square then a DDS chip more appropriate.


http://www.analog.com/en/products/rf-microwave/direct-digital-synthesis-modulators.html



Regards, Dana.

[SaabFAN]

I doubt there is a cost-effective DDS-Solution available that can generate a sine-wave in the 5Ghz-Range.

A sine-shaping circuit to turn the square-wave into a sine-wave would probably the best solution.
TI has an application-note about that topic.