How to show ADC results on 7segment display

Discussion in 'General Electronics Chat' started by ramses, Nov 5, 2013.

  1. ramses

    Thread Starter New Member

    Nov 5, 2013
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    Hi,
    i work on a range finder project. I need to help(source or suggestions) for displaying results of ADC( Analog to Digital Converter). I wonder how can i show ADC results on seven segment display. Is there any special integrated circuit for this situation?
    Thanks
     
  2. adam555

    Active Member

    Aug 17, 2013
    858
    39
    The easiest way is through a BCD-to-7segments Decoder (e.g. a 4511 IC)

    [​IMG]
     
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  3. crutschow

    Expert

    Mar 14, 2008
    13,050
    3,244
    There are also some ADC's that directly drive a digital display such as these.
     
    Last edited: Nov 5, 2013
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  4. ramses

    Thread Starter New Member

    Nov 5, 2013
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    I need to show results in 2 or 3 digits seven segment display(results are bigger than 9). Is it possible to construct multi-digit 7segment display with 4511 IC without using any microcontroller or microprocessor??
     
  5. MrChips

    Moderator

    Oct 2, 2009
    12,449
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    You can buy single chip ADC with BCD outputs.

    For example, MAX1496 (pdf file).
     
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  6. adam555

    Active Member

    Aug 17, 2013
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    You can also add a BCD counter to multiplex various digits. Like this...

    [​IMG]

    I never tried it, so I'm not the best person to advice you; but you can find more info here: http://www.elecpod.com/circuit/lighting/2012/03287459.html
     
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  7. ramses

    Thread Starter New Member

    Nov 5, 2013
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    I will use 8 bit ADC. SO I think that BCD to 7segment display is useless for the project. Results must be shown from 0 to 255. So i have to use 3 seven segment display. For this reason, can you suggest me any integrated circuit to drive 7segment display according to 8 bit?
     
  8. MrChips

    Moderator

    Oct 2, 2009
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    You can do it with three 74185 and three 7447 chips or with one PLA or MCU chip.
     
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  9. BobTPH

    Active Member

    Jun 5, 2013
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    A 14-pin microcontroller could replace the ADC and all other chips, needing only 3 transistors for digit drivers to enable a 3 digit output. But then, you need to have the tools and experience to program it.

    Bob
     
  10. ramses

    Thread Starter New Member

    Nov 5, 2013
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    Thanks. I think your suggestion is more usefull for my project and the basic configuration is like this:
     
  11. MrChips

    Moderator

    Oct 2, 2009
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    It is a 74185, not 74184.
     
  12. Yin WEi

    New Member

    May 14, 2016
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    0
    May i know what is the model of adc u used for this circuit?
     
  13. WBahn

    Moderator

    Mar 31, 2012
    17,777
    4,804
    Don't hold your breath waiting for a response-- the thread is more than two years dormant and the TS hasn't been seen in over a year. However, the TS (and other participants) should receive an e-mail notifying them of your post, so you can always keep your fingers crossed.
     
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