On 7/17/05, Jinx wrote: > > Also, in theory, thinking about it, 5mV ripple really might be too > > much. In the lower end of my signal, rippling at 5mV might cause > > an oscillation of up to 5 horsepower in either direction (10hp swing). > > At 1kHz ? Wow, that's some kind of switching response A second order filter will assure less than 3mV riple if it's well designed. But it must be active. If you'll need a simple 8bit DAC, I suggest you an I2C device: MAX5380/MAX5382. Vasile -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist