Do all three outputs appear on one pin? Are the three frequencies fixed? If so, I would probably recommend using the PWM built into a PIC along with three simultaneous direct digital synthesis (DDS) synthesizers whose results are summed into one output value. Bob Ammerman RAm Systems ----- Original Message ----- From: To: Sent: Wednesday, April 07, 2004 4:12 AM Subject: Re: [PIC]: 3 freq. simultaneous sine generator? > Can anyone advise where I can find a PIC design and code for the following > application? > > Simultaneous generation of 3 sinewaves of differing frequency and > amplitude. Due to cost and parts count, one IC and lookups are preferred > over filtering. > > The frequencies are all below 30 Hz (subaudio). Amplitudes are 3 to 5 volts. > > If there is no ready-made design, perhaps someone who is interested in > knocking one up for a suitable fee can contact me off-list. > > Thanks for your reply. > > Peter Nielsen > > -- > http://www.piclist.com hint: The list server can filter out subtopics > (like ads or off topics) for you. See http://www.piclist.com/#topics -- http://www.piclist.com hint: The list server can filter out subtopics (like ads or off topics) for you. See http://www.piclist.com/#topics