12 Digital Bit Generation at rate of 5M Samples per Second

Thread Starter

nigavesuraj

Joined Feb 21, 2018
2
Hello all,
In my project, I want to control 12 digital bits at rate of 5 MHz.
Please suggest me which micro-controller should I use for this application.
Micro-Controller has to work on 1.8Volts or 3.3Volts DC power supply.


System Requirement Digital Bit Controler.JPG
 

MrChips

Joined Oct 2, 2009
22,090
It is not clear what you are trying to do.
Are you sending digital stream at 5MHz, or are you digitizing an analog voltage at 5Msps?
 

Thread Starter

nigavesuraj

Joined Feb 21, 2018
2
Thanks for reply.
And sorry for confusing the things...
I want to send 12 digital bits at rate upto 5Hz(It may be 1MHz, 2MHz, 3MHz, etc.)

There is no relation of Analog to Digital conversion, ADC, Sampling rate, etc.

For reference I'm attaching the updated system requirement block diagram.
 

Attachments

BobaMosfet

Joined Jul 1, 2009
1,224
Your max rate whether serial or parallel means you have to transmit something (1 bit for serial or 12 bits if parallel) within 195ns. How much work you expect the micro-controller to do beyond simply sending will determine which you choose. I would recommend 32MHz or faster, perhaps an ARM Core M3.
 

MrChips

Joined Oct 2, 2009
22,090
If you want to minimize the signal interconnections then you want to go serial with SPI or I2C.
20MHz clock rate is not uncommon. What is the physical separation between the two subsystems?
 

nsaspook

Joined Aug 27, 2009
7,733
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