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Give output of ADS5520 to RS232 output

Paritosh Giri
Prodigy 120 points
Other Parts Discussed in Thread: ADS5520

Hi

I want to use ADS5520 to sample a signal at around 20 Msps and then send this signal to the serial output (RS232). What components do I need for that? Do I need a microcontroller and use this ADC as an external ADC or is there any evaluation board that can do the task? Please help me..

  • 0
    TI__Genius 12965 points

    Hi,

    You will need some processor to convert the samples from the ADS5520 to RS232 serial format.  The RS-232 typically supports rates of max 115.2kbps and will not support a live transmission of 12b at 20Msps.  Your only option is to capture the data to memory and then transmit this via RS232 after the capture to memory is complete.  You will need to use a microcontroller or FPGA with memory/ram access.  There are no pre-existing eval boards that have an RS 232 interface.

    Ken.

  • 0 in reply to Ken C
    Prodigy 120 points

    Thank u for the processor. I wanted to ask is there any microcontroller in TI that is suitable for doing this kind of operation. Please suggest me some microcontroller so that I can use it to complete my objective.

  • 0 in reply to Paritosh Giri
    TI__Genius 12965 points

    Hi,

    I would post a similar request to the C2000 or MSP430 forum to see if they can make a suggestion.  I'm not very familiar with the capabilities of our micro controllers and that team would be best to work with you on the best possible processor solution for your needs.  You could also check with the FPGA vendors (Altera/Xilinx/Lattice) to see if they have any RS 232 solutions.

    I can help forward this to C2000/MSP430 forum if you like - or you can just post there.  Let me know if you need my help.

    Ken.