Forum Post: RE: PCM1690 DAC - Terminate Differential Ouput to make Single Ended

You should not connect the VOUTx- pins to ground because they are biased to 0.5VCC1. Other than that, the VOUTx+ outputs behave like the VOUTx outputs of the PCM1691 (and the same output buffer circuit (fig.41 or fig.42 PCM1691 d/s)) can be used).