DSP to generate high frequency sin wave

[nmtech999]

I'm currently working on a project that requires a 250-500kHz sin pulse to generated from a DSP. Ive seen a few papers in which they were able to do this however, they do not go into much detail about how other that using a DSP and a DAC. I would greatly appreciate any suggestions which could help me achieve this. Thank you

 

[hobgoblin]

Do you really need a DSP? I think that many commercial DDS chips can be used to this.

 

[mowgli]

If the sine pulses frequency is fixed you can use a look up table, otherwise you could implement a CORDIC loop to generate the sine samples of the required frequencies.

Regards
Mowgli

 

[hobgoblin]

There are lot of ways to generate a sinewave in a DSP, including the CORDIC algorithm (however it is not the simplest one). You can also achieve this by using a recursive filter or a polynomial decomposition. In fact many (if not any) DSP C compilers has a function to generate the sine function.

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Alex