CM6571 Datasheet, PDF (52/63 Pages) C-Media Electronics – USB 2.0 full speed-compliant

CM6571
USB Audio Sound Chip
Audio Precision
12/08/11 16:41:08
+0
-20
-40
d
-60
B
-80
-100
-120
20
50
100
200
500
1k
2k
5k
Hz
Sweep Trace Color Line Style Thick Data
Axis Comment
1
1
Cyan Solid
2
Anlr.Crosstalk Left
Vis ta-D-A-Cros s talk-L.at27
10k 20k
Audio Precision
12/08/11 16:43:51
dx=-19.980 kHz
+1
+0.8
+0.6
+0.4
+0.2
+0
d
-0.2
e
g
-0.4
-0.6
-0.8
-1
-1.2
-1.4
-1.6
20
50
100
200
500
1k
2k
Hz
5k
10k 1290.9k999k
Sweep Trace Color Line Style Thick Data
Axis Comment
1
1
Cyan Solid
2
Anlr.Phase Left
Cursor1 Cursor2
..
..
Vista-D-A InterChannelPhaseDelay.at27
FIGURE 5. 48K/16BIT, 10K LOADING DAC, CROSSTALK R
FIGURE 6. 48K/16BIT, 10K LOADING DAC, PHASE DELAY
Audio Precision
-65
-70
-75
-80
-85
d
B
-90
r
-95
A
-100
-105
-110
-115
-120
20
50
100
200
500
1k
2k
Hz
Sweep Trace Color Line Style Thick Data
Axis Comment
1
1
Cyan Solid
2
Anlr.THD+N Ampl Left
1
2
Yellow Solid
2
Anlr.THD+N Ampl Left
Vista-D-A THD+N.at27
12/21/11 19:29:41 Audio Precision
dx=-19.979 kHz
+1
dy=-0.292 dB
12/21/11 19:32:27
+0.5
+0.02+10
-0.271
-0.5
d
B
r
-1
A
-1.5
-2
5k
10k
20k
-2.5
-3
192.9099
50
100
200
500
1k
2k
Hz
5k
10k 1290.9k988k
Sweep Trace Color Line Style Thick Data
Axis Comment
1
1
Cyan Solid
2
Anlr.Ampl Left
1
2
Yellow Solid
2
Anlr.Ampl Left
Curs or1
Curs or2
-0.263 dBr A +0.023 dBr A
*-0.271 dBr *+0.021 dBr
Vista-D-A FR+PR.at27
FIGURE 7. 96K/24BIT, 10K LOADING DAC, THD+N
FIGURE 8. 96K/24BIT, 10K LOADING DAC, FREQUENCY RESPONSE
Revised: Nov. 2012
Page 52 / 63
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