Fast sample rate for an ADC

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orbitronics

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I have the freedom to use any of your (or other) MCU, but am a teensy fanboy and was wondering if a 3.2 or 4 would reach a 5 Mhz sample rate on one ADC?

Down the line I will need four concurrent ADCs, but can always get four MCUs.

These ADCs will feed an FPGA.
 
I have no problem with reading parallel ADC data with a teensy 4 at 10 Msps. 20 Msps would probably be fine too.
 
I have no problem with reading parallel ADC data with a teensy 4 at 10 Msps. 20 Msps would probably be fine too.


thanks for getting back to me :)

I did try a basic benchmark where i counted how many times i could call analogRead in a second and it wasn't good, it was in the thousands.

Would i need to call the ADC differently?
 
I'm using a DC552A board with an external 10 Mhz clock. The teensy firmware polls the clock signal and inputs parallel ADC data just after the rising edge. Note that this leaves no time for anything else - analysis is done after collection.
 
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