PIC18f4550 and external ADC

Discussion in 'Embedded Systems and Microcontrollers' started by blind2_man, Jun 25, 2012.

  1. blind2_man

    Thread Starter Active Member

    May 12, 2008
    33
    1
    I want to connect an external ADC to PIC18f4550, on the stream paralel port. I read in the datasheet that it is possible that USB to transfer data directly in the endpoint. Can you help me choose an external ADC?
    The speed should be at least 10Msample /sec, to be compatible with streaming port.
    Does anybody succeeded to make this work(establish a high speed transfer in this configuration)?
    One idea is to use ADS931 or TLC5540 or AD9280ARSZ.
     
  2. t06afre

    AAC Fanatic!

    May 11, 2009
    5,939
    1,222
    Your PIC will never be fast enough to do this task. And neither the USB port:eek:. Sorry to say this
     
  3. blind2_man

    Thread Starter Active Member

    May 12, 2008
    33
    1
    I was afaraid to have this anweer. So far I have succed to transfer via CDC example from internal ADC 37ksample/s to PC.
    It shoud be possible to reach at least full speed 12Mb/s -> 1.5Msamples *8 bit /s.
     
    Last edited: Jun 25, 2012
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