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

Waqas Haque

Intellectual 1185 points

Hello,

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

over 8 years ago

0 Emrys Maier over 8 years ago

TI__Guru* 97046 points

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.

0 Waqas Haque over 8 years ago in reply to Emrys Maier

TI__Intellectual 1185 points

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.

0 Emrys Maier over 8 years ago in reply to Waqas Haque

TI__Guru* 97046 points

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.

0 Waqas Haque over 8 years ago in reply to Emrys Maier

TI__Intellectual 1185 points

Thanks Emrys!

Logic

Logic forum

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