Post Go back to editing

Recommended inductor for Y-TRAP of AD725

Inductor devices do have more properties than just an inductance.

Datasheet, evaluation board document and other resources I find on the internet do not give any idea other than 68 uH inductance. Here's a pic of possibly well performing inductor:

The one almost at the center marked 680J is expected to be the required inductor, its length must be 2.1 mm (comparing to the size of AD725), but I can not find such inductors.

I would appreciate if AD people would give part numbers of recommended (or successfully used) inductors, and then I will find out my way to source appropriate one locally.

Thank you.

Update: (after Guenter's reply)

The board in the picture above is Altium "12-404-PB01 -  Audio/Video Peripheral Board, Provides a Stereo Audio CODEC, 24-Bit VGA Output", here's the circuit diagram

PDF

The document does not list the BOM, but each component has more or less complete characteristic written on. For Y-trap inductor it has "68uH 80mA 5.5R" title, thus it is very close to the Guenter's proposed part.

Update: here's the final product based on the AD725.



added final product image
[edited by: Eugeny Brychkov at 9:59 PM (GMT 0) on 12 Nov 2019]
[edited by: Eugeny Brychkov at 9:59 PM (GMT 0) on 12 Nov 2019]

Top Replies

  • FormerMember
    FormerMember
Oct 11, 2019 in reply to Eugeny Brychkov +2 verified

The B82422.... should work fine.  5.5 vs 7.7 Ohm is not any real difference in the circuit.  

Looking at the link for the board/schematic explains a lot.  Video and fly wires together make me cringe.  Never…

  • FormerMember
    FormerMember Oct 10, 2019 in reply to Eugeny Brychkov +1

    Here's a schematic and bom for a AD725 board

     PDF    05-049628-01-a.zip

    It's not the one in the picture but it is the EVAL-AD725 board

    . PDF

  • FormerMember
    FormerMember Oct 11, 2019 in reply to Eugeny Brychkov +1

    Unfortunately I don't know which board the picture comes from .  The only AD725 eval board I found was the one I attached.  Are there any other numbers on the board you are looking at?

    This chip and…