Project Ideas?

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#1
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I have some IDT 7208-L20J (20ns access, 64k x 9, async fifo) lying around in my chip-box. So i thought "What could you do with that?"
Shoudn't it be possible to connect them with a high-speed adc and build a digital sampling oscilloscope (an logic analyser could be build too)?
But how could i get the data fast enough to the PC?
Maybe using a FT245?

Any Ideas?

Hava a look at my web page -> http://www.tobiscorner.at.tf

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I don't think the speed for sending data to the PC is an issue. Sure you won't use 4800 or 9600 baud rate, but something like 57600 should be enough. This is because you don't need to sample all the data and send them all to the PC, but only the one before and after triggering. A faster transfer rate means that you will have more frames per second, but most of the time it is not necessary anyway.

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Is 9bit resolution for the ADC enough?

Hava a look at my web page -> http://www.tobiscorner.at.tf

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Does anybody know about the technology used to achieve 1GS/s? Most ADC are about 100MS/s...

Hava a look at my web page -> http://www.tobiscorner.at.tf

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I dont think 'most' are that fast..... meters and scales used 'dual slope' converters.. slow but lots of bits.... most ic a/d converters are 'successive approximation'... takes 12 clks to do a 12 bit conversion... these get up to 1000s of samples/sec... scopes and radar and dsps need 'flash' converters that feed the signal into a tower of 256 comparators that all fire at the same time, spitting out an 8 bit binary number. These are the kind that can do millions of samples a sec. Audio uses 'sigma delta' converters which are mostly successive approximation, but use some tricks to get up to 24 bits, 192K Hz sample rate.

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