Author Topic: A good ADC for a diy osciloscope. (Read 2703 times)

shobo · « **on:** April 03, 2017, 06:43:10 pm »

Hey all,

Could anyone suggest a ADC for a diy osciloscope?10-15$ one off would be nice.

gnif · « **Reply #1 on:** April 03, 2017, 07:39:55 pm »

Not sure if this would help you, but your sound card can be used for low frequency stuff if you want a mostly complete DIY solution.

danadak · « **Reply #2 on:** April 03, 2017, 09:23:24 pm »

For a very effective low cost logic analyzer (use Saleae free software download) -

https://www.saleae.com/downloads

http://www.ebay.com/itm/New-Set-USB-Logic-Analyzer-Device-USB-Cable-24MHz-8CH-24MHz-for-ARM-FPGA-/291457642276?hash=item43dc3aaf24:g:3D4AAOSwBahVTC~q

Sound card and function generator and spectrum analyzer scope (freeware) -

https://www.zeitnitz.eu/scope_en

http://www.zelscope.com/

Google "protect sound card inputs" for circuits to keep your
sound card from overload.

Regards, Dana.

danadak · « **Reply #3 on:** April 03, 2017, 09:26:31 pm »

If you want to do a DIY scope A/D requirements set by sampling rate you
want to achieve and resolution.

What are your requirements for scope BW and resolution ?

DIY scope with a PSOC which has A/D, ARM Core, DSP engine (for filtering),
and so much more.

http://www.embedded.com/design/prototyping-and-development/4421857/2/Configuring-a-PSoC-for-a-DIY-oscilliscope-logic-analyzer---Part-1

http://www.embedded.com/design/prototyping-and-development/4421858/Configuring-a-PSoC-for-a-DIY-oscilliscope-logic-analyzer---Part-2

Regards, Dana.

capt bullshot · « **Reply #4 on:** April 04, 2017, 07:26:34 am »

http://www.ti.com/product/adc32rf45

SCNR :-), it is slightly out of your price limits

PointyOintment · « **Reply #5 on:** April 14, 2017, 08:06:49 am »

What specs are you looking for? Bandwidth? Sample rate? Resolution? Channels? Output format?

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