CS35L32 Datasheet, PDF (46/51 Pages) Cirrus Logic – Boosted Class D Amplifier with Speaker-Protection Monitoring and Flash LED Drivers

CS35L32
8.2 Audio Output Typical Performance Plots
40
160
35
140
30
120
25
100
20
80
15
60
10
40
5
20
0
2.5
3
3.5
4
4.5
5
5.5
VP Voltage (V)
0
2.5
3
3.5
4
4.5
5
5.5
VP Voltage (V)
Figure 8-5. Device Idle Power Consumption, Current vs. VP— Figure 8-6. Device Idle Power Consumption, Power vs. VP—
VBST = 5.0 V, VBST = VP = 3.6 V
VBST = 5.0 V, VBST = VP = 3.6 V
8.2 Audio Output Typical Performance Plots
To avoid nonlinearities (distortion) introduced by the amplifier load inductor itself, all amplifier typical performance plots
use a resistor and not a simulated speaker load. No EMI filtering is populated on the amplifier outputs (OUT±).
10
VBST = VP
VBST = 5 V
Automatic Mode
1
0.1
0.01
0.001
0.01
0.1
1
Output Power (W)
Figure 8-7. THD+N Ratio vs. Output Power @ 1 kHz, 8 —
Bypass Mode (VBST = VP = 3.6 V),
Fixed Boost Mode (VBST = 5 V), Automatic Mode
10
VBST = VP
VBST = 5 V
1
0.1
0.01
0.001
0.0001
100
1000
Frequency (Hz)
10000
Figure 8-8. THD+N Ratio vs. Frequency, 8 —
Bypass Mode (VBST = VP = 3.6 V, Load = 0.5 W),
Fixed Boost Mode (VBST = 5 V, Load = 1 W)
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DS963F5