Analogue to Digital Conversion Circuitry

[David-Baratheon]

HI everyone.

I currently have an sbRIO-9651 which has no ADC capabilities.

I want to design my own ADC circuit that I can interface with the FPGA input.

Are there any documents that might help me with this? I am not really sure what the output of the circuit exactly looks like or what the requirements of such a circuit would be.

I am ok with schematic design, simulation and PCB layout design.

Just not too sure on the specific design of the circuit. I will have a look at some general ADC design guides online but wondered if there is any specific requirements for the sbRIO-9651?

Any resources or advice that anyone has for this will be much appreciated.

I will be designing the PCB with MultiSIM and UltiBoard and getting it manufactured externally.

[TomTr]

Hi David.

I'm afraid I can't offer too much assistance on creating an ADC circuit. If you look at the manual you should get some information redgarding the requirements for the sbRIO-9651.

http://www.ni.com/pdf/manuals/376962b.pdf

If you do have any further questions about this let me know. I don't have personal experience with this but I will try to help.

Kind regards,

Tom

[K C]

Hi,

Looks like you have to create something yourself with a ADC IC (something like ADS7844) and additional circuitry  or use COTS module that convert your analog value to a digital value.

It depends on your needs and capabilities.

Kees