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24 bit ADC with integrated FIFO interfacing with ELB-REV4

Nick King
Expert 1280 points

Hello experts

  • I am looking for a ADC chip set with 16 bit or 24 bit resolution
  • with on chip capture buffer/FIFO of 1024 samples and it must have a interrupt line
  • this interrupt line which only interrupt the ELB-REV4 (AM335X based device) once capture buffer is half filled 512 samples and
  • then  ELB-REV4 (AM335X based device) can read data from the ADC using SPI or any interface
  • power consumed by this ADC must be as low as of the order of 2mW even if power consumed is bit high its ok sampling rate can vary from 10 SPS to 1000 SPS

Please suggest any ADC chipset that satisfies the above points

  • 0
    TI__Guru**** 168485 points
    Hi Nick,

    We do not have any stand alone ADC's in our portfolio with that sort of FIFO depth, so you might be looking at something like an ADC coupled with a low power MSP430 device to act as a FIFO/buffer between an external ADC and your ELB-REV4 controller. That combination though may not satisfy your 2 mW power consumption criteria. What sort of application are you looking at here?
  • 0 in reply to Tom Hendrick
    Expert 1280 points

    Hi Tom

    we have 3 analog sensors which will be fed to ADC with 24 bit resolution now the ELB-REV4 needs to read the ADC value continuously but if the ADC has a FIFO then the CPU can configure the ADC in such a way that as soon as 50% of the FIFO is full the ADC can interrupt the ELB-REV4 which can go and read the FIFO in one go. 

    as per your solution ADC couple with MSP430 i think is best option

    Regards