• Resolved

Recommendation: S/PDIF Level shifting to/from 2.5V CMOS

Hello,

I am looking for a level shifter for S/PDIF to 2.5V CMOS and vice versa (2.5V CMOS to S/PDIF).

 
Best regards,
Waqas Haque
Systems Engineer
High Speed Signal Conditioning - HSDC
Texas Instruments
  • Hi Waqas,

    I believe this falls under our audio group, although I'm not sure which group that is these days.  Here's a list of parts that I found by searching our site (using Google - I found nothing using our search engine)

    Products for SPDIF Transceiver

    If those aren't what you need, you might try contacting the folks who own those parts - or let me know tomorrow when I"m at work and I can look them up.


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  • In reply to Emrys Maier:

    Hi Emrys,

    Thanks for the response! I checked with the audio group and it turns out they don't have anything with this functionality. Anything in the level shifter portfolio that could work for these voltage levels?

    If not, I guess I'll have to try an op amp implementation or something.

     
    Best regards,
    Waqas Haque
    Systems Engineer
    High Speed Signal Conditioning - HSDC
    Texas Instruments
  • In reply to Waqas Haque:

    I'm not familiar with the S/PDIF standard, but when I searched for it, it looked like the signal can be between 0.2V and 0.6 V peak to peak (ie differential signal). If that's correct, we don't have anything for it. A comparator with reference set at 0V and ~200mV of hysteresis with output of 0V to 2.5V is probably the best bet.


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  • In reply to Emrys Maier:

    Thanks Emrys!
     
    Best regards,
    Waqas Haque
    Systems Engineer
    High Speed Signal Conditioning - HSDC
    Texas Instruments