Is it possible to do FSK modulation with IQ modulators?

Yes

Do you have PDF,link app note links?I need some data and info

You can do MSK with rectangular pulses to I and Q.

For two state FSK you put the proper triangular waves into I and Q to make the vector rotate clockwise or counterclockwise. (advancing phase or retarding phase)

how to convert my stream of data to that "proper triangular waves " ?,it it possible to give more details or articles?thanks

I deduced the triangle method from a thought experiment. I have no practical experience doing it in hardware.

[added next day] After more thought, you use sine and cos instead of the triangles. I is cos wt and Q is sin wt. Where w is the frequency shift. For shifting the other direction use -wt which changes the sign of sin but not cos.

You can generate these with two integrators in a loop with some sort of amplitude limiting control.

Thank you flatulent,what you think is in this article of analog device:

http://www.analog.com/UploadedFiles/...conversion.pdf


FSK,FM,... generation using DDS + IQ modulator.

thanks for you helps.