| ??? 05/15/12 23:49 Read: times |
#187375 - DDS (Direct Digital Synthesis) Responding to: ???'s previous message |
Jason Arkwright said:
I need to generate a sinewave with quadrature outputs, speed wise >1kHz. Do you have an alternative to generating a digitally derived sinewave? These days, it is usually done via DDS (Direct Digital Synthesis). Analog Devices offer many variants, including one rather 'over-kill monster' AD9854 that has two DACs, and will do all you want in one package. I think you can also use two DDS chips, and the single DAC ones come down to MSOP10 in size, so are easier to work with. Some variants include more than just DDS, and can scan frequencies too (eg AD5932 ) Or, you could use a PC Sound card, if this is for a lab-test. Or look for the smallest/cheapest Microcontroller (32b?) with Dual 12b DAC, and do in software, what these DDS parts do in hardware. |
| Topic | Author | Date |
| 256bit x 8 proms | 01/01/70 00:00 | |
| What frequency Sine wave & Clock ? | 01/01/70 00:00 | |
| Thank you | 01/01/70 00:00 | |
| DDS (Direct Digital Synthesis) | 01/01/70 00:00 | |
| digital sine wave | 01/01/70 00:00 | |
| uC sine generator | 01/01/70 00:00 | |
| DMA | 01/01/70 00:00 | |
| neither do I | 01/01/70 00:00 | |
| ARN | 01/01/70 00:00 | |
| 'F120 Series | 01/01/70 00:00 | |
| Other solutions | 01/01/70 00:00 | |
| 150nS access time is so long | 01/01/70 00:00 | |
| is that realy the case? | 01/01/70 00:00 | |
| Of course my solution | 01/01/70 00:00 | |
| Hmmm.., nice but... | 01/01/70 00:00 | |
| Those are actually PALs not CPLDs | 01/01/70 00:00 | |
| ATF750CL for PT clocks | 01/01/70 00:00 | |
| ATF750 | 01/01/70 00:00 | |
| ATF750C ? | 01/01/70 00:00 | |
| Yes, Jim You are exactly right. | 01/01/70 00:00 | |
| Can I suggest | 01/01/70 00:00 | |
| ATDH1150USB | 01/01/70 00:00 | |
| Update : ATDH1150VPC | 01/01/70 00:00 | |
Thanks JIM | 01/01/70 00:00 |