SA58670A Datasheet, PDF (15/24 Pages) NXP Semiconductors – 2.1 W/channel stereo class-D audio amplifier

NXP Semiconductors
SA58670A
2.1 W/channel stereo class-D audio amplifier
0.8
P
(W)
0.6
001aah511
(1)
0.4
P
(W)
0.3
001aah512
(1)
(2)
0.4
(3)
0.2
0.2
(2)
0.1
(3)
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
(1) V_DD = 5.0 V.
(2) V_DD = 3.6 V.
(3) V_DD = 2.5 V.
Fig 14. Power dissipation as a function of output power
b. R_L = 8 Ω
100
η_po
80
60
(3)
(2)
001aah513
(1)
100
η_po
80
(3)
(2)
60
001aah514
(1)
40
40
20
20
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 = 5.0 V.
(2) V_DD = 3.6 V.
(3) V_DD = 2.5 V.
Fig 15. Output power efficiency as a function of output power
SA58670A_2
Product data sheet
Rev. 02 — 23 October 2008
© NXP B.V. 2008. All rights reserved.
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