CS35L00 Datasheet, PDF (24/34 Pages) Cirrus Logic – 2.7 W Mono Class-D Audio Amplifier with Low Idle Current

CS35L00
3.50
3.5
2200 pF
3.00
3.0
R_L = 4 
10% THD+N Ratio
2.50
2.5
2.00
1000 pF
1.50
2.0
R_L = 4 
1% THD+N Ratio
1.5
1.00
470 pF
0.50
No Filter
0.00
2.5
3
3.5
4
4.5
5
5.5
VBATT (V)
Figure 26. Idle Current Draw vs. VBATT - FSD Mode
R_L = 8  + 33 H (Note 16)
1.0
R_L = 8 
10% THD+N Ratio
0.5
R_L = 8 
1% THD+N Ratio
0.0
2.5
3.0
3.5
4.0
4.5
5.0
5.5
VBATT Supply Voltage (V)
Figure 27. Output Power vs. VBATT - FSD Mode
100%
90%
80%
3.7 V
4.2 V
5.0 V
70%
60%
50%
40%
30%
20%
10%
0%
0
0.25
0.5
0.75
1
Output Power (W)
1.25
1.5
1.75
Figure 28. Efficiency vs. Output Power - FSD Mode
R_L = 8  + 33 H
100%
90%
80%
70%
3.7 V
60%
4.2 V
5.0 V
50%
40%
30%
20%
10%
0%
0
0.5
1
1.5
2
2.5
3
Output Power (W)
Figure 29. Efficiency vs. Output Power - FSD Mode
R_L = 4  + 33 H
0.40
0.80
0.35
4.2 V
0.30
3.7 V
0.25
5.0 V
0.20
0.70
4.2 V
0.60
3.7 V
0.50
0.40
5.0 V
0.15
0.30
0.10
0.20
0.05
0.10
0.00
0
0.25
0.5
0.75
1
Output Power (W)
1.25
1.5
1.75
Figure 30. Supply Current vs. Output Power - FSD Mode
R_L = 8  + 33 H
0.00
0
0.5
1
1.5
2
2.5
3
Output Power (W)
Figure 31. Supply Current vs. Output Power - FSD Mode
R_L = 4  + 33 H
Note:
16. “Idle Current Draw vs. VBATT - FSD Mode” capacitor values refer to C_FILT when configured as the
“CS35L00’s Minimized Optional Output Filter”, shown in Figure 5 on page 17.
24
DS906A2