Analog Devices have direct digital synthesizer chip AD9852.Check there site for more info.Also you can check Circuit Cellar site:
**w.circuitcellar.com/pastissues/articles/ lacoste130/lacoste130.pdf
there is a description of DDS gen
Analog Devices have direct digital synthesizer chip AD9852.Check there site for more info.Also you can check Circuit Cellar site:
**w.circuitcellar.com/pastissues/articles/ lacoste130/lacoste130.pdf
there is a description of DDS gen
thanx . But in fact I only need to generate logic signals on 8 channels in order to simulate some digital inputs on a microcontroller board. the design on circuit cellar doesn't seem to be whatI need :?