2902 มี ACD ครับ
ดู spec ได้ที่
http://focus.ti.com/lit/ds/symlink/pcm2902.pdf ครับ
คร่าวๆก็
16-Bit Delta Sigma ADC and DAC
Sampling Rate:
− DAC: 32, 44.1, 48 kHz
−
ADC: 8, 11.025, 16, 22.05, 32, 44.1,
48 kHz On-Chip Clock Generator:
− With Single 12-MHz Clock Source
Single Power Supply: 5 V TYP (VBUS)
S
Stereo ADC
− Analog Performance at VBUS = 5 V
− THD+N = 0.01%
− SNR = 89 dB
− Dynamic Range = 89 dB− Decimation Digital Filter
− Pass-Band Ripple = ±0.05 dB
− Stop-Band Attenuation = –65 dB
− Single-Ended Voltage Input
− Antialiasing Filter Included
− Digital LCF Included
Stereo DAC
− Analog Performance at VBUS = 5 V
− THD+N = 0.005%
− SNR = 96 dB
− Dynamic Range = 93 dB
− Oversampling Digital Filter
− Pass-Band Ripple = ±0.1 dB
− Stop-Band Attenuation = –43 dB
− Single-Ended Voltage Output
− Analog LPF Included