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rockom
Joined: 06 Oct 2009
Posts: 6
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 06 Oct 2009 4:45 Scopes & FPGA's |
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I've been scouring the web looking at different homebrew oscilloscope solutions and have found ALL of the projects that are capable of greater than a few hundred kHz are using an FPGA or CPLD.
Why is that? What would a uC need to offer in order to fill this block of the designs?
Thanks,
-Rocko
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svhb
Joined: 07 Mar 2006
Posts: 101
Helped: 14
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06 Oct 2009 20:05 Re: Scopes & FPGA's |
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It only has to do with how fast the microcontrolle or fpga (+ADC) can sample and handle (store) the data for a certain price of the components.
If you do a project with a certain desired functionality, you want to do that for the minimum cost that fulfills the needs. I suppose the higher sample rates require a too expensive micro-controller (or adds too much external components anyway, like fast ADC's, external memory, ... --> these you probably need also with fpga/cpld designs).
Even with the FPGA/cpld designs, probably a microcontroller is involved anyway for the visualisation/communication/flow-control-software...
Stefaan
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rockom
Joined: 06 Oct 2009
Posts: 6
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07 Oct 2009 2:17 Re: Scopes & FPGA's |
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Ahh I see.
Thanks,
-Rocko
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