Generating programmable Frequency (square & sinewave) us

[codewiz]

square to sine wave

Please, can anyone give me idea or link on how to do this project: generating range of frequency from Hz to KHz (in square and sine wave mode) programmable using PIC16F876A. Its a function generator. Thanks in anticipation for your help.

 

[casper]

pic ltc6904*

you can program a soft DDS with a pic 16f876a.
Use a high clock frequency (20MHz).
Example link:http://mondo-technology.com/

Regards

 

[codewiz]

programmable frequency

thanx 4 ur reply. have u tried the design at mondo technology? cos i want to build it. btw whats DDS? thanks

 

[jmarkwolf]

dds con pic16f876a

For sinewave generation:

MSLOSC from MSI

For square wave generation:

Linear Technology LTC6903 & LTC6904

All are small serially programmable chips.