Datasheet


SLES100A − DECEMBER 2003 − REVISED NOVEMBER 2006
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44
ANALOG FIR FILTER PERFORMANCE IN DSD MODE (CONTINUED)
Figure 49. DSD Filter-3, Low BW
f – Frequency – kHz
−6
−5
−4
−3
−2
−1
0
0 50 100 150 200
Gain – dB
GAIN
vs
FREQUENCY
Figure 50. DSD Filter-3, High BW
f – Frequency – kHz
−60
−50
−40
−30
−20
−10
0
0 500 1000 1500
Gain – dB
GAIN
vs
FREQUENCY
f
c
= 85 kHz
Gain
(1)
= –1.5 dB
Figure 51. DSD Filter-4, Low BW
f – Frequency – kHz
−6
−5
−4
−3
−2
−1
0
0 50 100 150 200
Gain – dB
GAIN
vs
FREQUENCY
Figure 52. DSD Filter-4, High BW
f – Frequency – kHz
−60
−50
−40
−30
−20
−10
0
0 500 1000 1500
Gain – dB
GAIN
vs
FREQUENCY
f
c
= 94 kHz
Gain
(1)
= –3.3 dB
(1)
This gain is in comparison to PCM 0 dB, when the DSD input signal efficiency is 50%.
All specifications at DBCK = 2.8224 MHz (44.1 kHz × 64 f
S
), and 50% modulation DSD data input, unless otherwise noted.