CS35L32 Datasheet, PDF (47/51 Pages) Cirrus Logic – Boosted Class D Amplifier with Speaker-Protection Monitoring and Flash LED Drivers

CS35L32
8.3 Monitoring Typical Performance Plots
1
0.8
0.6
0.4
0.2
0
−0.2
−0.4
−0.6
−0.8
−1
100
1000
Frequency (Hz)
−10
−20
−30
−40
−50
−60
−70
−80
10000
100
1000
Frequency (Hz)
10000
Figure 8-9. Frequency Response @ 1 W—
Figure 8-10. VP PSRR Vs. Frequency, VP_ac = 100 mVpk—
Fixed-Boost Mode (VBST = 5 V, Refer to Amplitude @ 1 kHz) Bypass Mode (VBST = VP), Fixed-Boost Mode (VBST = 5 V)
8.3 Monitoring Typical Performance Plots
Unless otherwise noted, all VMON/IMON plots use the amplifier as the signal source and all measurements were taken
using an 8  + 33 H load. All listed load inductances include any measured inductances contained in the connection to
the load. No EMI filtering is populated on the amplifier outputs (OUT±).
−10
−20
VBST = 5 V
VBST = VP
−10
−20
VBST = 5 V
VBST = VP
−30
−30
−40
−40
−50
−50
−60
−60
−70
−70
−80
0.001
0.01
0.1
1
Output Power (W)
−80
0.001
0.01
0.1
1
Output Power (W)
Figure 8-11. IMON THD+N Ratio vs. Amplifier Output Power @ Figure 8-12. VMON THD+N Ratio vs. Amplifier Output Power @
1 kHz—Bypass Mode (VBST = VP = 3.6 V, Load = 0.5 W)
1 kHz—Bypass Mode (VBST = VP = 3.6 V, Load = 0.5 W)
Fixed Boost Mode (VBST = 5 V, Load = 1 W)
Fixed Boost Mode (VBST = 5 V, Load = 1 W)
DS963F5
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