| Electronics > Projects, Designs, and Technical Stuff |
| Lowest cost way to capture 110 channels of ADC data |
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| ali_asadzadeh:
Guys thanks for the TIPS, I think the Idea that use 1 Pin per ADC sound very good, the main problem would be the Clock and MOSI buffers, and also low jitter clock generation, do you suggest any parts for them? also I think I can convince them to use 10G Ethernet, I have done 1G Ethernet before, But not a 10G one. Any ideas on that would be nice too? is it very hard compared to 1G Ethernet? also do you suggest an ARTIX or a ZYNQ part? the price is my concern, since my profit would come for using lower cost parts :) |
| mariush:
Some super fast compression should be possible. Even something as simple as RLE on high byte and lo-bytes of samples read. Or maybe you could use a FPGA with pci-e capability and simply dump the data onto a pci-e bus? Then you could use a small computer to buffer the data in RAM or a SSD and compress it in real time and push it on a 1gbps ethernet port. Instead of paying 50-100$ for a 10g network card, you could get a motherboard with embedded cpu like this one for example : https://www.newegg.com/asrock-j3355m-micro-atx/p/N82E16813157730 Lots of options under 75$. Add a stick or two of memory and a standard atx power supply (you can get boards with 12v DC in for <100$) and a small boot drive (a usb stick would work, an emmc, a 16-32gb ssd etc) You could sell it as giving them them ability to add a SATA SSD to dump the data to it instead of streaming it to some other place, making everything more convenient, portable... |
| Brutte:
--- Quote from: ali_asadzadeh on October 23, 2019, 02:58:15 pm ---One of my customers neededd me to design an FPGA board for him to be able to capture 110 ADC channels simultaneously, the ADC is LTC2378-16 --- End quote --- So your customer specified 110 x LTC2378-16 ADCs and you are asking for the lowest cost solution? You have very interesting customers :popcorn: The 110 ADCs cost €2000 - what is the difference if the FPGA costs 1€ or €100? |
| MagicSmoker:
--- Quote from: Brutte on October 24, 2019, 11:07:27 am ---So your customer specified 110 x LTC2378-16 ADCs and you are asking for the lowest cost solution? You have very interesting customers :popcorn: The 110 ADCs cost €2000 - what is the difference if the FPGA costs 1€ or €100? --- End quote --- The OP has a habit of asking for the cheapest solution to lots of complicated problems and without having done much/any of the initial legwork himself. |
| Brutte:
I'd also strongly advice buying one of those ADC chips and check if this is according to the parameters specified in a datasheet, before you spend €2000 for the batch of 110. I have learned Linear Technology marketing tricks the hard way. It is Analog Devices now. |
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