SA58671 Datasheet, PDF (15/24 Pages) NXP Semiconductors – 1.2 W/channel stereo class-D audio amplifier

NXP Semiconductors
SA58671
1.2 W/channel stereo class-D audio amplifier
80
η_po
(%)
60
40
20
001aah177
(1)
(2)
100
η_po
(%) (1)
80
60
40
20
001aah179
(2)
0
0
0.4
0.8
1.2
1.6
2.0
P_o (W)
0
0
0.4
0.8
1.2
1.6
P_o (W)
a. R_L = 4 Ω
b. R_L = 8 Ω
(1) V_DD = 3.6 V
(2) V_DD = 5.0 V
Fig 13. Output power efficiency as a function of output power
1.0
P
(W)
0.8
0.6
0.4
0.2
001aah178
(2)
(1)
0.4
P
(W)
0.3
(1)
(2)
0.2
0.1
0
0
0.4
0.8
1.2
1.6
2.0
P_o (W)
0
0
0.4
0.8
a. R_L = 4 Ω
(1) V_DD = 3.6 V
(2) V_DD = 5.0 V
Fig 14. Power dissipation as a function of output power
b. R_L = 8 Ω
001aah573
1.2
1.6
P_o (W)
SA58671_2
Product data sheet
Rev. 02 — 24 October 2008
© NXP B.V. 2008. All rights reserved.
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