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TDA8933B Datasheet, PDF (30/42 Pages) NXP Semiconductors – Class D audio amplifier
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NXP Semiconductors
TDA8933B
Class D audio amplifier
100
S/N
(dB)
(2)
80
(1)
60
010aaa509
0
αcs
(dB)
−20
−40
010aaa510
40
−60
(1)
20
0
10−2
10−1
1
10
102
Po (W)
Ri = 0 Ω; 20 kHz brick wall filter AES17
(1) RL = 2 × 4 Ω SE at VP = 17 V
(2) RL = 2 × 8 Ω SE at VP = 25 V
Fig 16. Signal-to-noise ratio as a function of output
power
−80
(2)
−100
10
102
103
104
105
fi (Hz)
Po = 1 W
(1) RL = 2 × 4 Ω SE at VP = 17 V
(2) RL = 2 × 8 Ω SE at VP = 25 V
Fig 17. Channel separation as a function of frequency
100
ηpo
(%)
80
(1)
(2)
60
010aaa511
40
20
0
0
3
6
9
12
15
Po (W/channel)
fi = 1 kHz; η po = 2-----×-2----P×----o-P--+--o---P--
(1) RL = 2 × 4 Ω SE at 17 V
(2) RL = 2 × 8 Ω SE at 25 V
Fig 18. Output power efficiency as a function of
output power
3.0
P
(W)
2.0
1.0
010aaa512
(1)
(2)
0.0
10−2
10−1
1
10
102
Po (W/channel)
fi = 1 kHz; Power dissipation in junction only
(1) RL = 2 × 4 Ω SE at 17 V
(2) RL = 2 × 8 Ω SE at 25 V
Fig 19. Power dissipation as a function of output
power per channel (two channels driven)
TDA8933B_1
Preliminary data sheet
Rev. 01 — 23 October 2008
© NXP B.V. 2008. All rights reserved.
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