> > Sigma-Delta DACs and their companion the Delta Sigma ADC converter are > easy enough to implement with quite basic PICs. You're right... A 14-bit delta-sigma DAC should be able to reach 80 kHz on a 4 MHz 16F. It is not as difficult as I thought. Greetings, Maarten Hofman. -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist