generating other wave with DDS

[maziar]

ad9850 vhdl model

hi all

i try find DDS chip to generate sine and other wave (for example triangle) ???

 

[Maximilian4711]

arbitrary generator ad9854

Hi,

try at: https://www.analog.com

and search for "dds". I have used so far the Ad9850, Ad9851. There are relatively easy to use and very precise. Furthermore you will find many articles and complete projects with these ICs on the web (try google with ad9851 and/or dds).

May this will help you.

Max.

 

[sugm]

dds chip square wave

AD9850/51 only can generate a low frequency waveform. For higher frquency, you can select AD9854

 

[maziar]

i think ADC9854 can not generate non sine wave this true ?

 

[ttosolee]

i think you are looking for true DDS based waveform generator chip or Arbitrary Waveform Generator chip.
but most chips are designed for different applications, so it is not easy to find out exact purpose.

you can check several links for DDS.
https://www.hit.bme.hu/people/papay/sci/DDS/products.htm

 

[maziar]

i can not find any chip can download uor wave and run
i tr see many dds from AD,Haris and other but all can not do it


have any chip can do this operate ?

 

[Stark]

It depends on operating frequency you can always think to write VHDL model to fit your apps in FPGA because DDS usually generates sine and square wave function.
Stark

 

[maziar]

have any vhdl mode for it max frequncy i need about 150mhz i no need accmulator !

 

[alongsh]

ad9854 will fit for u
i used it to generate sigle tone,fm signal
and so on.

 

[sboduna]

hi,

i try find DDS chip to generate sine and other wave (for example triangle) ???

you may try to generate some forms with use of syncronous FM of sin signal (as it done in old Yamaha FM synth eg.DX7 DX21)
GoodLuck.

 

[elcielo]

http://www.janson-soft.de/amateurfunk/rfsim99/rfsim99.htm

Lo Pass Filter Design for DDS