CM6571 Datasheet, PDF (58/63 Pages) C-Media Electronics – USB 2.0 full speed-compliant

CM6571
USB Audio Sound Chip
Audio Precision
+0
-20
A-D THD+N vs FREQUENCY
05/04/12 15:17:59 Audio Precision
+0
-20
A-D THD+N vs FREQUENCY
05/04/12 15:17:08
-40
d
B
-60
F
S
-80
-100
-40
d
B
-60
F
S
-80
-100
-120
20
50
100
200
500
1k
2k
5k
Hz
Sweep Trace Color Line Style Thick Data
Axis Comment
1
1
Red Solid
1
DSP Anlr.Ampl B Left
Vista-A-D Crosstalk_R.at27
10k 20k
-120
20
50
100
200
500
1k
2k
5k
Hz
Sweep Trace Color Line Style Thick Data
Axis Comment
1
1
Red Solid
1
DSP Anlr.Ampl A Left
Vista-A-D Crosstalk_L.at27
10k 20k
FIGURE 21. 48K/16BIT, LINE IN, CHANNEL SEPARATION R
FIGURE 22. 48K/16BIT, LINE IN, CHANNEL SEPARATION L
Audio Precision
A-D THD+N vs FREQUENCY
12/29/11 15:19:39 Audio Precision
A-D FREQUENCY RESPONSE
12/29/11 15:22:58
+0
-20
-40
d
B
-60
F
S
-80
-100
+0
-0-0.1.1048
-0.5
dx=19.9795 kHz
d
-1
B
F
-1.5
S
-2
-2.5
dy=+0.032 dB
-120
20
50
100
200
500
1k
2k
Hz
5k
10k 20k
-3
202.055
50
100
200
500
1k
2k
Hz
5k
10k 202k0k
Sweep Trace Color Line Style Thick Data
Axis Comment
1
1
Yellow Solid
1
DSP Anlr.THD+N Ampl A Left
1
2
Cyan Solid
1
DSP Anlr.THD+N Ampl B Left
Sweep Trace Color Line Style Thick Data
Axis Comment
1
1
Yellow Solid
1
DSP Anlr.Level A Left
1
2
Cyan Solid
1
DSP Anlr.Level B Left
Vista-A-D THD+N.at2c
Vista-A-D Frequency Response.at2c
FIGURE 23. 96K/24BIT, MICROPHONE IN, THD+N
FIGURE 24. 96K/24BIT, MICROPHONE IN, FREQUENCY RESPONSE
Revised: Nov. 2012
Page 58 / 63
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