24-Bit, 192-kHz Sampling, Advanced Segment, Audio Stereo DAC ...
24-Bit, 192-kHz Sampling, Advanced Segment, Audio Stereo DAC ...
24-Bit, 192-kHz Sampling, Advanced Segment, Audio Stereo DAC ...
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www.ti.com<br />
ANALOG FIR FILTER PERFORMANCE IN DSD MODE<br />
Gain – dB<br />
Gain – dB<br />
0<br />
−1<br />
−2<br />
−3<br />
−4<br />
−5<br />
GAIN<br />
vs<br />
FREQUENCY<br />
−6<br />
0 50 100 150 200<br />
0<br />
−1<br />
−2<br />
−3<br />
−4<br />
−5<br />
f – Frequency – <strong>kHz</strong><br />
Figure 46. DSD Filter-1, Low BW<br />
GAIN<br />
vs<br />
FREQUENCY<br />
−6<br />
0 50 100 150 200<br />
f – Frequency – <strong>kHz</strong><br />
Figure 48. DSD Filter-2, Low BW<br />
(1) This gain is in comparison to PCM 0 dB, when the DSD input signal efficiency is 50%.<br />
Gain – dB<br />
Gain – dB<br />
0<br />
−10<br />
−20<br />
−30<br />
−40<br />
−50<br />
<br />
SLES105B − FEBRUARY 2004 − REVISED NOVEMBER 2006<br />
GAIN<br />
vs<br />
FREQUENCY<br />
fc = 185 <strong>kHz</strong><br />
Gain(1) = –6.6 dB<br />
−60<br />
0 500 1000 1500<br />
f – Frequency – <strong>kHz</strong><br />
Figure 47. DSD Filter-1, High BW<br />
0<br />
−10<br />
−20<br />
−30<br />
−40<br />
−50<br />
GAIN<br />
vs<br />
FREQUENCY<br />
fc = 77 <strong>kHz</strong><br />
Gain(1) = –6 dB<br />
−60<br />
0 500 1000 1500<br />
f – Frequency – <strong>kHz</strong><br />
Figure 49. DSD Filter-2, High BW<br />
All specifications at DBCK = 2.82<strong>24</strong> MHz (44.1 <strong>kHz</strong> × 64 fS), and 50% modulation DSD data input, unless otherwise noted.<br />
43
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