Do we have any frequency response curves of the AIC34 from digital input to DAC output (HP or line - any analog out) for a 48kHz sample rate?
My customer is currently using with an open source Linux driver and seeing a much faster high frequency rolloff than I'd expect: -3dB point appears to be about 14kHz. By 20kHz its rolled off almost 10dB. Given the 48kHz sample rate and 0.45Fs corner frequency on our DAC (from datasheet) - I'd expect to be -3dB at about 21kHz. I am currently troubleshooting their register settings. In the meantime, do we have any curves showing frequency response for 48kHz Fs or can we run an AIC34 though an AP and take a response curve?
Thanks,
Dan
