Connect with us


Discussion in 'General Electronics Discussion' started by deepak kumar panda, Jun 17, 2014.

Scroll to continue with content
  1. deepak kumar panda

    deepak kumar panda

    Mar 21, 2012
    Dear Friends,

    What are the factors of choosing an ADC or DAC?
    How should be decide which ADC/DAC to use?
  2. GreenGiant


    Feb 9, 2012
    There are lots of things to look at.

    Generally you look at input/output voltage/current ranges to see if the meet your needs. Then you look at resolution, most of the time higher is better but sometimes you don't need a ton of resolution, if you only need to read 0-10 volts in 1 volt increments you only need a 4 bit ADC, but if you need to measure 0-10 volts in 1 millivolt increments then you need a 14 bit ADC.

    There is also the problem of speed, the higher the resolution the faster it is going to need to read. (0-10 volts over 1 second = 62.5 milliseconds per bit for a 4 bit, or 1 second = 61 microseconds (.061 milliseconds) per bit for a 14 bit).

    It may help to know what the application is.
  3. (*steve*)

    (*steve*) ¡sǝpodᴉʇuɐ ǝɥʇ ɹɐǝɥd Moderator

    Jan 21, 2010
    Here's a few factors:

    • Accuracy,
    • linearity,
    • speed,
    • voltage range,
    • reference voltage,
    • interface,
    • available packages,
    • cost,
    • availability,
    • familiarity,.
Ask a Question
Want to reply to this thread or ask your own question?
You'll need to choose a username for the site, which only take a couple of moments (here). After that, you can post your question and our members will help you out.
Electronics Point Logo
Continue to site
Quote of the day