Re: High speed ADC with USB interface
From: Ulf Samuelsson (ulf_at_a-t-m-e-l.com)
Date: 01/27/05
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Date: Thu, 27 Jan 2005 22:43:58 +0100
> >
> > My corrected question is;
> >
> > I'm looking for 12-16bit ADC Board with 4MHz sampling rate capable of
> > storing 4K samples, with USB interface to transfer data to a PC.
> >
> >
>
> A 12-16 bit ADC with 4 Mhz sampling rate requires a minimum throughput of
48
> Mb/s, and a maximum of 64 Mb/s. This means you must have a Hi-Speed USB
2.0
> IC, which is capable of the theoretical maximum of 480 Mb/s.
>
If the board needs/has a sample buffer, then there is no need for the high
speed.
You get 4k samples and then upload it over 12 mbps USB at leasure.
/Ulf
> -Antti Keskinen
>
>
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