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ES9018K2M, ES9028Q2M, 9038Q2M DSD/I2S DAC HATs for Raspberry Pi
ES9018K2M, ES9028Q2M, 9038Q2M DSD/I2S DAC HATs for Raspberry Pi
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Old 11th December 2017, 12:23 PM   #81
pistollero is offline pistollero  Portugal
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It would be nice some options for the output stage...
Tubes, transformer, discrete.
Than we could choose the one we like...balanced or single ended.
Than everyone would be happy.
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Old 14th December 2017, 02:05 PM   #82
pinnocchio is offline pinnocchio  Canada
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Would be nice something that you can just stack on top of the DAC and allow for many output options. A bit like the VZaudio Modular NS OPS amplifier, it has the option of adding different IPS to it. They have several SS designs available and a Tube IPS as well. I love the modular approach!

Do
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Old 14th December 2017, 02:42 PM   #83
iancanada is offline iancanada  Canada
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ES9018K2M, ES9028Q2M, 9038Q2M DSD/I2S DAC HATs for Raspberry Pi
Quote:
Originally Posted by pinnocchio View Post
Would be nice something that you can just stack on top of the DAC and allow for many output options. A bit like the VZaudio Modular NS OPS amplifier, it has the option of adding different IPS to it. They have several SS designs available and a Tube IPS as well. I love the modular approach!

Do
That's really a good idea. Will do it this way.

My DAC will have raw balanced outputs to the daughter board that stacks on top of it. The interface will be open source to community members. You can even design IV/analog stage by your self. Discrete, transformer,tube,OP...everything is possible. You may have different kind of daughter boards for it. A lot of fun

I'll post more solutions later. I hope you like them.

Thank you so much.
Ian
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Old 14th December 2017, 09:23 PM   #84
xaled is offline xaled
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Hi Ian,
Would a raw single ended output for the daughter board be possible?
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Old 14th December 2017, 11:06 PM   #85
iancanada is offline iancanada  Canada
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ES9018K2M, ES9028Q2M, 9038Q2M DSD/I2S DAC HATs for Raspberry Pi
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Originally Posted by xaled View Post
Hi Ian,
Would a raw single ended output for the daughter board be possible?
What do you mean "ended output"?

Regards,
Ian
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Old 14th December 2017, 11:14 PM   #86
BryceJ is offline BryceJ  Canada
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Originally Posted by iancanada View Post
What do you mean "ended output"?

Regards,
Ian
Not balanced.
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Old 14th December 2017, 11:18 PM   #87
pistollero is offline pistollero  Portugal
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Quote:
Originally Posted by iancanada View Post
That's really a good idea. Will do it this way.

My DAC will have raw balanced outputs to the daughter board that stacks on top of it. The interface will be open source to community members. You can even design IV/analog stage by your self. Discrete, transformer,tube,OP...everything is possible. You may have different kind of daughter boards for it. A lot of fun

I'll post more solutions later. I hope you like them.

Thank you so much.
Ian
That's perfect!!!
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Old 14th December 2017, 11:22 PM   #88
iancanada is offline iancanada  Canada
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ES9018K2M, ES9028Q2M, 9038Q2M DSD/I2S DAC HATs for Raspberry Pi
Quote:
Originally Posted by BryceJ View Post
Not balanced.
Thanks,

Quote:
Originally Posted by xaled View Post
Hi Ian,
Would a raw single ended output for the daughter board be possible?
The DAC raw out signals are balanced. It is possible to be converted to both balanced and signal ended line output signals on I/V board (daughter board).

Ian
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Old 15th December 2017, 10:08 AM   #89
xaled is offline xaled
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Quote:
Originally Posted by iancanada View Post
Thanks,



The DAC raw out signals are balanced.



Ian

Ok, thanks.
I thought ESS DAC has both options as raw output.
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Old 15th December 2017, 12:26 PM   #90
Rod Coleman is offline Rod Coleman  United Kingdom
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ES9018K2M, ES9028Q2M, 9038Q2M DSD/I2S DAC HATs for Raspberry Pi
Quote:
Originally Posted by xaled View Post
Ok, thanks.
I thought ESS DAC has both options as raw output.
Yes, you can have balanced or unbalanced outputs:

- in "voltage output mode": simply use one phase of the DAC output, and feed this to a high-impedance input of a reconstruction filter. The opposite DAC phase is left open.

- in "Current output mode" (normal mode), there are various methods of single-ended output generation:

- the standard differential I→V with reconstruction filter, followed by a Differential-to-SE stage;

- or, apply a single I→V to one DAC phase, while routing the opposite phase to terminate current (example: to A_VCC, A_VCC/2, or A_GND)
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