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View Full Version : dds-vfo circuits -whether possible with ds PIC ?



mvs_sarma
- 8th April 2007, 18:52
Hi,

it is well known that many hobbyists realise DDS-VFO using AD9850 or ad9851 from Analog Devices, and use PIC for controlling it.

Is it possible to use dsPIC chips and still realise DDSeffect for VFO , withut need for AD chip.

If so can anyone help me locate related literature

please!!!

skimask
- 9th April 2007, 03:09
Is it possible to use dsPIC chips and still realise DDSeffect for VFO , withut need for AD chip. If so can anyone help me locate related literature please!!!

More pleases....How about more searching...say...Google perhaps...and less PLEASE!!!!

A N.I.B. (or O.E.M.) dsPIC can do DDS for a VFO and they have A/D AFAIK. But you won't be able to DIY code, at least not with PBP. You'll have to DIY some ASM with MPASM from M-C and you'll have to DIY a PLL for good F/B to keep control the L/O's I/F AFAIK.

As far as literature, try www.microchip.com. All sorts of great datasheets.

mvs_sarma
- 9th April 2007, 11:09
Thanks Skimask,