EZDac pulse transformer

[claud...@hotmail.com]

Hi all,
I was looking for the Newava 22083 pulse trafo, but it's hard to find
in my region. So doing some researches, I found out it is the same as
the Schott 22083: http://www.schottcorp.com/products/pdfs/Digital_Audio_Interface_Transformers/67125450.PDF

Now looking at the datasheet, it says "1-10 MHz pulse transformer",
but looking on Cirrus AN134 it says:
"The transformer used in the professional interface should be capable
of operation from 3.6 to 24.6 MHz, which is the audio data rate of 28
kHz to 192 kHz after biphase-mark encoding."

My question is the Newava-Schott trafo is below the frequency range
requested by the CS8416.

Moreover, I found a possible substitute of the 22086:

Pulse T6075 (http://www.pulseeng.com/products/datasheets/T688.pdf).
Could be a problem for the pin to pin position on PCB

C&D 76601/3 (http://www.cd4power.com/data/power/ncl/nmp_766_4.pdf)

Evan, you tried many types, this two too? What do you think as
substitute?

Thanks,
Claudio

[ezkcdude]

Claudio, I would go for the first one you mentioned (Schott 22083). It
looks to be exactly the same part.
-evan

On May 31, 11:21 am, claudio...@hotmail.com wrote:
> Hi all,
> I was looking for the Newava 22083 pulse trafo, but it's hard to find
> in my region. So doing some researches, I found out it is the same as

> the Schott 22083:http://www.schottcorp.com/products/pdfs/Digital_Audio_Interface_Trans...

[claud...@hotmail.com]

Evan,
Schott is hard to find as well, not being in USA.

What about the Mhz range?
Did you try the Pulse and C&D as well?

Claudio

[Evan Zamir]

Claudio, I've only used the Newava. I think the Schott will work, even with that stated frequency, but I can't guarantee it. The Pulse is 6-pins, so that won't work. I really don't know about the C&D either. Shipping rates have gone through the roof here, so I know why you are hesitant to order the Newava. Even if sent it to you, it would cost you around $30 USD (and as you know, there's no telling how long it will take). I'm not sure what more to tell you about this. If anyone else has ideas...
-evan

[claud...@hotmail.com]

Thanks for the answer, Evan.
About the Pulse it is 6 pin, but the center pins are utilized only for
the shielded version, so cutting them should not be a problem, right?
The problem might be the marked pins (1-4) that are not in line as in
the Newava.

Let's see if any european EZdac builder has some clues on how to buy
the Newava-Schott.

Claudio

On 31 Mag, 14:53, "Evan Zamir" <zamir.e...@gmail.com> wrote:
> Claudio, I've only used the Newava. I think the Schott will work, even with
> that stated frequency, but I can't guarantee it. The Pulse is 6-pins, so
> that won't work. I really don't know about the C&D either. Shipping rates
> have gone through the roof here, so I know why you are hesitant to order the
> Newava. Even if sent it to you, it would cost you around $30 USD (and as you
> know, there's no telling how long it will take). I'm not sure what more to
> tell you about this. If anyone else has ideas...
> -evan
>

[mult...@ntlworld.com]

What about these
http://uk.farnell.com/jsp/Electrical/Transformers+&+Accessories/C+&++D+TECHNOLOGIES/76601/3C/displayProduct.jsp?sku=1087809

[claud...@hotmail.com]

It is the C&D type I suggest in the starting message: seems ok as
values, even better leakage and capacitance, but higher DC resistance,
at a nice price too. If I can't find the Newava, I will order one of
C&D and do some impedance measurement, for comparison.

Regards,
Claudio

[mult...@ntlworld.com]

Yes, thought I'd post the Farnell link just incase:-) I actually
fitted one of thoseC&D ones in the spdif out of my SB3, it seems to
work well and cheap too, main reason I got it was because of the low
leakage and capacitance, I use the Newava one in the Ezdac too, I was
struggling to buy another (a friend ordered me the Newava)