Hello fellow engineers,
we are designing a demo board for educators and students and we need a frequency/pattern generator for
producing various types of signals these of a maximum base frequency of round about 10MHz (more is better
here but not a necessity).
We want to be able to generate all kinds of patterns without loading the application microcontroller. This includes
everything from sharp delta-like functions to totally random patterns, from PWM signals to phase shifted sin waves
or triangle waves.
I have gone through the DDS products and it seems that the ideal IC is AD9102, I simply load the pattern that I want
and the pattern is executed and that only seems to be part of the functionality but let´s say for said purposes it gives
the maximum flexibility. I have gone also through the datasheet and it seems I am right, I just need a confirmation,
to get some closure :-).
And the second question is, whether or not I can set the RAM frame from the pattern. So to say, if I am able to
specify to the IC that the pattern I want reproduced is from A address to B address and ignore the rest (or from the
beginning of the pattern RAM to a specific point). Having this ability would make the IC extremely flexible and if I am
right that´s described in page 25 of the datasheet, by START_ADDR and STOP_ADDR, but then again I need this
small clarification.
Thank you in advance for your time and effort,
With best regards,
Lefteris,
Thessaloniki, Greece
