CS35L00 Datasheet, PDF (26/34 Pages) Cirrus Logic – 2.7 W Mono Class-D Audio Amplifier with Low Idle Current

CS35L00
4.00
3.50
3.00
2200 pF
2.50
1000 pF
2.00
1.50
1.00
470 pF
0.50
No Filter
0.00
2.5
3
3.5
4
4.5
5
5.5
VBATT (V)
Figure 38. Idle Current Draw vs. VBATT - HD Mode
R_L = 8  + 33 H (Note 17)
3.5
3.0
R_L = 4 
10% THD+N Ratio
2.5
2.0
R_L = 4 
1% THD+N Ratio
1.5
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 39. Output Power vs. VBATT - HD 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 40. Efficiency vs. Output Power - HD 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 41. Efficiency vs. Output Power - HD 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 42. Supply Current vs. Output Power - HD Mode
R_L = 8  + 33 H
0.00
0
0.5
1
1.5
2
2.5
3
Output Power (W)
Figure 43. Supply Current vs. Output Power - HD Mode
R_L = 4  + 33 H
Note:
17. “Idle Current Draw vs. VBATT - HD Mode” capacitor values refer to C_FILT when configured as the
“CS35L00’s Minimized Optional Output Filter”, shown in Figure 5 on page 17. When VBATT is below
“VBATT Limit for HD/FHD Mode” (VB_LIM), operation is restricted to SD Mode.
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DS906A2