Help with 24 bit serial to usb connection

Discussion in 'Embedded Systems and Microcontrollers' started by PhilipH, Apr 30, 2009.

  1. PhilipH

    Thread Starter New Member

    Apr 30, 2009
    2
    0
    Hi,

    I am trying to connect a 24 bit A/D converter(AD7732) to the computer.
    I saw that PICs only support up to 16 bits on a serial line. This is not enough for my application.

    Can anyone recommend a technique to connect the 24 bit A/D converter(which has a 24bit SPI or serial interface) to the computer?

    Thanks!

    Philip
     
  2. AlexR

    Well-Known Member

    Jan 16, 2008
    735
    54
    The obvious answer is to send the data as 3 X 8 bit words.

    What I am intrigued about though is what could you possibly be measuring that needs 24 bit precision? That's 16 odd million discrete levels.
     
  3. PhilipH

    Thread Starter New Member

    Apr 30, 2009
    2
    0
    "What I am intrigued about though is what could you possibly be measuring that needs 24 bit precision? That's 16 odd million discrete levels. "

    It is to measure how nosey you are.









    Lol jk. Its for extremely precise temperature measurements. Thanks for the reply.
     
  4. Papabravo

    Expert

    Feb 24, 2006
    10,154
    1,795
    This is simply not true. You should be more careful with your information sources. In addition, the number of bits on a serial link has nothing whatever to do with a USB connection. That is a completely separate issue.
     
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