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#151 | |
diyAudio Member
Join Date: Nov 2014
Location: Cincinnati
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Quote:
Now interestingly, both of these can readily be made balanced as the SEN, so from the point of view of what DSC2 might look like, and assuming we use this approach for the discrete IV and filters, what would the digital input look like? ... would it be as simple as placing an inverter on the DSD input line? |
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#152 |
diyAudio Member
Join Date: Sep 2013
Location: Eisingen
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Hello,
I reiterate my question about coupling between the different stages to know if I can go completly DC and only place a coupling cap at the output of the last Sallen-Key filter? I´ve asking Patrick (EUVL) for helping to built a last version of his simplistic OPAMP to use as output buffer. JLSOUNDS give me 3D datas for the I2SOVERUSB converter: I´m working on some missing components but the results are today quiet good, please see the attachment... Jean-Paul |
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#153 |
diyAudio Member
Join Date: Nov 2014
Location: Cincinnati
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I've been looking at SFP input and I2S output with networkaudiod running on a low powered CPU. sm31 pointed this out: Optical Network Configurations - Page 16
This product will use the Xilinx 7010/7020: krtkl So a driver would need to be written/modified to get I2S output on the pins ... doable? I am thinking this would be a terrific platform to create a direct Ethernet input for the "DSC2". |
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#154 |
diyAudio Member
Join Date: Nov 2014
Location: Cincinnati
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Does anyone know? Would placing an inverter on the DSDR and DSDL lines provide the input to a balanced DSC1?
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#155 |
diyAudio Member
Join Date: Sep 2013
Location: Eisingen
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... D flip-Flop... see no DAC thread...
Jean-Paul |
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#157 |
diyAudio Member
Join Date: Sep 2013
Location: Eisingen
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I know but more complex then only transformer LPF.
Jean-Paul |
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#158 |
diyAudio Member
Join Date: Nov 2014
Location: Cincinnati
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Not just transformer
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#159 |
diyAudio Member
Join Date: Nov 2014
Location: Cincinnati
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Schematic for a Balanced DSC shift register and resistor ladder module:
Balanced-DSC.jpg and board: BalancedDSCboard.png |
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#160 |
diyAudio Member
Join Date: Nov 2014
Location: Cincinnati
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Perhaps I'm being too compulsive, but I've re-layout the board so that the BCLK has a constant path length to the shift register chips:
Bal.DSC.png In this case the clock and DSD signals come in via U.FL. This board is for each channel. |
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