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From: JosephKK on 6 Mar 2010 20:44
On Fri, 05 Mar 2010 17:05:22 +0000, Dirk Bruere at NeoPax <dirk.bruere(a)gmail.com> wrote:

>On 05/03/2010 16:00, JosephKK wrote:
>> On Tue, 02 Mar 2010 21:49:38 +0000, Dirk Bruere at NeoPax<dirk.bruere(a)gmail.com> wrote:
>>
>>> Looking for a reliable circuit for the level conversion from SPDIF to
>>> TTL. I then intend to feed it to an RS485 driver and into a transformer
>>> for transmission via CAT5e
>>
>> I figure all that needs done is to put it through a transformer to adjust
>> for native impedance and use Cat5e.
>
>True, but I need to fan out.
>Getting TTL (ish) enough to drive a 485 chip from a 0.6V SPDIF signal?
>Analog comparator?

Run the signal through an old uA703 diff amp to three transformers.
Better, use a modern diff amp. 0.6 V and less than 5 Mpbs is easy
these days.
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