The DDS sounds interesting. Since no PIC I know of has a DAC on it, I guess they'll use an external DAC. I think I read about 50% duty cycle output, but DDS usually requires a DAC. If you just use a square wave output (like the msb of the phase accumulator), you get a lot of jitter. So, it'll be interesting to see what they have. Harold --=20 FCC Rules Updated Daily at http://www.hallikainen.com - Advertising opportunities available! --=20 http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .