DSP-Board SigmaDSP ADAU1701 / 1401A SRC4382 PCM5102A

In cooperation with stromrichter.org (D amp v. 2) a little DSP Board on the basis of the ADAU1701 (ADAU1401A) is currently being built.

Use of see also:

  • SRC4382 (ASRC with S/PDIF transceiver)
  • PCM5102A (32 bit 384 kHz stereo DAC with 2Vrms line driver)
  • ATTiny85 (8 bit microcontroller)

The basic concept is shown below.



  • 2 x analog (ADAU1701 ADC) 44.1/48 kHz
  • I2S (via SRC4382) directly or by resampling (32-192 kHz)
  • S/PDIF (via SRC4382) directly or by resampling (32-192 kHz), coax/Toslink


  • 4 x analog (ADAU1701 DAC) 44.1/48/96kHz
  • 2 x analogue (PCM5102A DAC) 44.1/48/96kHz
  • I2S (PCM5102A stream)
  • Coax/Toslink, S/PDIF, AES (via SRC4382)

ADAU WIP (04.01.2015) #1 ADAU WIP (04.01.2015) #1

ADAU WIP (04.01.2015) #3

Update 15.03.2015

ADAU WIP (15.03.2015) #1

ADAU WIP (15.03.2015) #2

Update 27.01.2017

The hardware of the first revision in pictures.

ADAU hardware #1

ADAU hardware #1

ADAU hardware #1 details

ADAU hardware #1 details

ADAU hardware #2

ADAU hardware #2

AGML battery charger

You may so like...

19 Responses

  1. KC says:

    Hi Can I get more information on this board? Also how you program the ADAU1701 ?

  2. JR,,en,18. January 2018,,en,23:21,,en,Are there new to DSP board? The link to Stromrichter.org leads to only one board index where nothing is for DSP ..,,de,12:15,,en,The DSP is completed and running. There are a couple blank boards available.,,de says:

    Gibt es neues zur DSP-Platine? Der Link zu Stromrichter.org führt nur auf eine Forenübersicht, wo nix zum DSP steht..

  3. This looks very interesting!
    Where can we find some documentation?

  4. Carsten says:

    is being developed in the project?
    Is an interesting concept.
    Would me also, as far as I can take part if there are still problems unfortunately is my know of the atmega not especially Groß

  5. BB says:

    I bumped into your website.
    Nice little board!

    Do you know that the PCM5102A also has a ton of DSP functions on board?
    There the ADAU1701 may not really needed anymore

  6. Andreas says:

    Das Projekt sieht sehr interessant aus – gibt es dazu schon etwas neues oder eine Möglichkeit sich daran zu beteiligen?

  7. andrea says:

    nice audio design and the news of march 2015 say it’s marching on.
    can you tell us if it’s going to be available for everybody?
    kickstarter or similar crowdfunding?

  8. André says:

    There is already a functioning building?
    Have the miniDSP 2 × 4 in which also the ADAU1701 seat. Unfortunately, I have problems with the I2S connections.
    How to solve you the software side to just filter, etc set to?

  9. Walter fehrmann says:

    6 analog outputs would be ok assuming the pcm510x on board.

  10. Walter fehrmann says:

    Can you participate in the project? I'm looking for exactly such a configuration for use as a dig. CROSSOVER.

  1. 26. January 2015

    […] easily and quickly. We do not have this and would like to operate a SigmaDSP (like the ADAU1701) in the "standalone" aka "Selfboot fashion", facing the challenge [...]

Leave a reply

Your email address will not be published.

* Checkbox GDPR is required,,en,This form collects your name, email and content so that we can keep track of the comments placed on the website. For more info check our privacy policy where you'll get more info on where, how and why we store your data.,,en,I agree,,en


I agree