Quality AM/FM receiver chip?

Discussion in 'Wireless & RF Design' started by riverboatman, Sep 28, 2013.

  1. riverboatman

    Thread Starter New Member

    Sep 28, 2013
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    0
    I would like to build a quality AM/FM receiver using something like a TDA7088 or equivalent. I've already picked out a LM1310 decoder and TDA1554 audio amplifier but just can't seem to settle on what receiver chip to use. Anyone build a receiver lately and have suggestions?
     
  2. doug08

    Member

    Jan 30, 2011
    153
    2
  3. riverboatman

    Thread Starter New Member

    Sep 28, 2013
    2
    0
    Thanks for the reply. Well......as usual, I changed my mind on the TDA7000 series chips when I found that a Si4835 chip is available and has resistance manual tuning capabilities using a LOG pot. That was what I really was looking for when I started this project. Very little outside components and no decoder required. Almost a plug and play. I'm still going with the TDA1554Q 2X22W amp chip as I really don't need any loud blaring audio. I haven't been able to find this chip in a DIP pack so I guess it's gonna be me and my microscope battling to get the thing on a board.

    If anyone has any info on a 12v to 3.3v DC/DC converter they'd like share, I'll be appreciative. I am going to need something stable/regulated for this chip as the radio is going in my car.

    Is there anyone out there building a DIY AM/FM with this chip. Anyone wanna chime in?
     
  4. Art

    Distinguished Member

    Sep 10, 2007
    785
    61
    FM only, TDA7000. Quite some time ago.. yes..

    [​IMG]

    This was the second attempt for prototype board. First one wasn't tight enough.

    My AM radio was MK484 based:

    [​IMG]

    I still do not have nylon standoffs for the ferrite rod.
     
    Last edited: Oct 1, 2013
    absf likes this.
  5. absf

    Senior Member

    Dec 29, 2010
    1,492
    371
    Nice project...;)

    Where did you get the tuning capacitor? Was the PCB from Radio Shack?

    Allen
     
  6. Art

    Distinguished Member

    Sep 10, 2007
    785
    61
    Hi,
    I'm in Australia, our major hobby electronics retailer was Dick Smith Electronics,
    but the chain was bought out, and they moved to retail appliances,
    and stopped doing any hobby electronics at all.
    When that happened I got this:
    http://farm3.static.flickr.com/2700/4342437835_3b380708eb.jpg

    I love these proto boards, have 3 left, and don't have any replacement when they are gone :(
    But I do think I have more component supply than anyone here :)

    Turns out I was here with my radio problems in the first place:
    http://forum.allaboutcircuits.com/showthread.php?t=35099&page=2
    The AM radios were actually ALL ok, I just needed better antenna + TDAxxx amplifier.

     
    Last edited: Oct 2, 2013
  7. radiohead

    Active Member

    May 28, 2009
    474
    31
    You could harvest a chip from a broken radio.
     
  8. djsfantasi

    AAC Fanatic!

    Apr 11, 2010
    2,795
    830
    How are you going to install your radio in the car? Please provide more detail.
     
  9. elec_mech

    Senior Member

    Nov 12, 2008
    1,513
    193
    I've gotten those boards from a U.S. supplier here. I assume they can ship to Australia, but I haven't checked.
     
  10. Art

    Distinguished Member

    Sep 10, 2007
    785
    61
    Is it not thought that these will become obsolete?
    Maybe the powers that be can't get away with just digital radio
    due to reception threshold for digital.
     
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