I was referred to this forum from the Audio DSP forum here: https://ez.analog.com/audio/f/q-a/549311/balanced-output-from-ad1937/431910#431910
I am using the AnalogDevices AD1937 audio codecs in a large loudspeaker array design and I am using 24-bit, 48 kHz, balanced audio out of the DAC portion of the AD1937's.
The reference designs for your codecs that I have seen, and on our evaluation board, are typically for unbalanced audio outputs with OpAmps. We need all outputs to be balanced audio outputs. Ideally achieving +18 dBu when the signal is 0 dBFS within the codec. i.e., trying to set the maximum output voltage to +18 dBU (~6.15 Vrms), for connection to external audio devices.
Do you have a linear filter / differential amplifier design that may help me achieve this?