I am working on a design which uses the following Texas Instrument parts: PCM1681TPWPRQ1 and TAS5514BTDKDRQ1.
The PCM part is an Audio DAC which feeds 4 audio outputs to an external connector. The other 4 audio outputs are sent to the TAS5514B
Audio Amplifier.
I have includes a low pass filter at each of the 8 Audio DAC outputs. I have modeled the Low Pass Filter from information found on page 32 of the Audio DAC datasheet. I am using VCOM to provide a bias voltage for the for all 8 Low Pass Filters.
I will upload the schematic pages of interest. Can I get a review of these schematic pages.
I am particularly interested in the audio connections between the AUDIO DAC and AUDIO AMPLIFIER, Since I have a low pass filter at the DAC
what filtering do I need at the Audio Amplifier? Just the DC Blocking cap? As far as the 4 Audio DAC outputs getting sent to an external connector. I am sending VCOM to this connector as well.