CS3511_0912 Datasheet, PDF (19/26 Pages) Cirrus Logic – Stereo 10 W High-efficiency Class-D Audio Power Amplifier

CS3511
2.5
2
1.5
1
0.5
0
0
2
4
6
8
10
12
14
16
18
20
Total Output Power (Watts)
Figure 11. Supply Current vs. P_OUT (R_L= 8 Ω)
2.5
2
1.5
1
0.5
0
0
2
4
6
8
10
12
14
16
18
20
Total Output Power (Watts)
Figure 12. Supply Current vs. P_OUT (R_L= 6 Ω)
10
5
2
1
0.5
0.2
%
0.1
0.05
0.02
0.01
0.005
0.002
0.001
20
10
5
1.0 W
5.0 W
2
1
0.5
0.2
%
0.1
0.05
0.5 W
50
100
200
500
1k
2k
Hz
5k
10k
20k
0.02
0.01
0.005
0.002
0.001
20
1.0 W
5.0 W
0.5 W
50
100
200
500
1k
2k
Hz
5k
10k
20k
Figure 13. THD+N vs. Frequency (R_L= 8 Ω)
Figure 14. THD+N vs. Frequency (R_L= 6 Ω)
+5
+5
+4
+4
+3
+3
+2
+2
+1
d
B
r
-0
A
-1
+1
d
B
r
-0
A
-1
-2
-2
-3
-3
-4
-4
-5
20
50
100
200
500
1k
2k
5k
10k
20k
Hz
Figure 15. Frequency Response (P_OUT = 1 W, R_L= 8 Ω)
-5
20
50
100
200
500
1k
2k
5k
10k
20k
Hz
Figure 16. Frequency Response (P_OUT = 1 W, R_L= 6 Ω)
See Note below.
Note: The full-bridge output filter found on the CRD3511 reference design board implements 22µH inductors
and is optimized for an 8 Ω load.
DS845F1
19