here's some more info I dug up
• High-Performance Stereo Codec
– 90-dB SNR Multibit Sigma-Delta ADC (A-weighted at 48 kHz)
– 100-dB SNR Multibit Sigma-Delta DAC (A-weighted at 48 kHz)
• Highly Efficient Linear Headphone Amplifier
– 30 mW per channel into 32 #8486;
A/D Converters
Dynamic range, A-weighted, –60-dB full-scale input 85dB (min) 90dB (typical) Total harmonic distortion 1 dB input 0 dB gain -80dB (typical) ADC channel separation 1 kHz input tone 90 dB (typical)
D/A Converters
Total harmonic distortion (1kHz, 0dB), -88dB (typical) -80dB (max) Total harmonic distortion (1kHz, -3dB), -92dB (typical), -86dB (max) DAC channel separation 100 dB (typical)
Stereo Headphone Output
0-dB full-scale output voltage 1.0 VRMS
Maximum output power, RL = 32 #8486; 30mW
Maximum output power, RL = 16 #8486; 40mW
Signal-to-noise ratio, A-weighted 90dB (min) 97dB (typical) Total harmonic distortion, 1kHz, PO = 10 mW, 0.1% (max) Total Harmonic Distortion, 1kHz, PO = 20 mW, 1% (max)