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Old 3rd July 2012, 10:51 AM   #1
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Default ES9018 DUAL MONO DAC PCB

I am offering a groupbuy for the very compact highest performing ES9018 dual mono dac pcb. The dac can take spdif and I2S input signal. The spdif input signal works only in stereo mode which means only the first dac chip can used and the other can be switched off. The I2S signal can be used either in stereo or dual mono mode. Members can use their own power supply and IV stage. Fully assembled DAC can also be provided in case members find it difficult to sourcing the parts. The dac board measures 13 cm (l) x 6.9 cm (b). This DAC is very cheap to build and all components are easily available. All necessary documentations for building the dac will be provided to the members. The dac boards are high quality FPT tested FR4 pcb.


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Old 3rd July 2012, 02:18 PM   #2
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Cost per dac board $65 + $10 worldwide registered airmail shipping with full tracking. The DAC board has isolated i2c interface for the microcontroller. The AVCC buffers can also be omitted if members wish to have their own AVCC buffers. Anyone interested can contact with paypal email id and number of boards required.
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Old 3rd July 2012, 03:24 PM   #3
qusp is offline qusp  Australia
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there is no reason the spdif should be limited to one chip, you havent worked out how to program the registers of the ESS yet? why are they running with a clock each?
interesting enough and i'm sure some will buy it, but I cant see ive seen much on V1, all parts are easy to source? how about the chips that must be bought in lots of 5 from a single place?

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Old 3rd July 2012, 04:11 PM   #4
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Yes, the spdif is connected to second chip also. I couldn't share a single clock with both chips as the distance between the clock pins of the dac chip and clock will be long. Yes all parts are easily available, the crystal is available from digikey and for the dac chip there is no such single place where you have to buy a lot of 5. It is easily available in lots of two. In case anyone whats me to get the dac chip in lots of two i can get them easily.
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Old 4th July 2012, 01:18 PM   #5
qusp is offline qusp  Australia
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my point was, why not make the design so that it can share a clock. obviously with the current layout that would be suboptimal, that wasnt my suggestion. it would not be difficult to place a clock in between them, particularly if it was 4 layer.

last I bought the chips some time ago, I think there was a minimum order. but regardless, the chip is not easily or cheaply available from the usual suppliers, its the reason there havent been many GB's of this type with the ESS.

if you set the dac to dual differential or one of the other mono formats by the registers, you dont need to make any changes to the spdif signal, you just send the same stereo signal to both dacs. the dac, if correctly set to one of the mono formats, will use only what part of the signal it needs to ie. just left, just right etc. each dac is assigned an address in the registers 0 or 1 to allow this
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Old 29th July 2012, 02:21 AM   #6
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Is the board still available for sale ?
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Old 14th September 2012, 09:02 PM   #7
enantra is offline enantra  Spain
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still available for sale ?
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Old 15th September 2012, 08:50 AM   #8
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Quote:
Originally Posted by syllable View Post
I am offering a groupbuy for the very compact highest performing ES9018 dual mono dac pcb. The dac can take spdif and I2S input signal. The spdif input signal works only in stereo mode which means only the first dac chip can used and the other can be switched off. The I2S signal can be used either in stereo or dual mono mode. Members can use their own power supply and IV stage. Fully assembled DAC can also be provided in case members find it difficult to sourcing the parts. The dac board measures 13 cm (l) x 6.9 cm (b). This DAC is very cheap to build and all components are easily available. All necessary documentations for building the dac will be provided to the members. The dac boards are high quality FPT tested FR4 pcb.


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