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AK4458 multichannel DAC with I2S input
AK4458 multichannel DAC with I2S input
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Old 19th November 2017, 08:13 PM   #101
zarandok is offline zarandok  Austria
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I am a little uncertain in respect of optimal grounding (copper pour for signal and power supply bypassing caps). Are there some experts who can give some tips?

(layout in DipTrace free format)
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Old 22nd November 2017, 10:54 AM   #102
zarandok is offline zarandok  Austria
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So, I have made as I find it right...

The big bypass capacitors (10-100uF) have separate traces to the GND connection point. The small caps (10-100nF) near the OPAs are connected to the copper pour on both side. I didn't find a separate way for them. Some top-bottom GND vias must be still placed perhaps.

The lower side (for Ch1-4) must be simply mirrored...

At the first I do not plan to use the on-board regulators (I have external ones), will simply short them.
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Last edited by zarandok; 22nd November 2017 at 10:59 AM.
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