TDA8933 Datasheet, PDF (33/47 Pages) NXP Semiconductors – Class-D audio amplifier

NXP Semiconductors
TDA8933
Class-D audio amplifier
120
S/N
(dB)
80
40
010aaa148
−20
α_cs
(dB)
−40
−60
−80
010aaa153
(1)
(2)
0
10^−2
10^−1
1
10
10²
P_o (W/channel)
R_i = 0 Ω; 20 kHz brick wall filter AES17
(1) R_L = 2 × 4 Ω; V_P = 17 V
(2) R_L = 2 × 8 Ω; V_P = 25 V
Fig 18. Signal-to-noise ratio as a function of output
power
−100
10
10²
10³
10⁴
10⁵
f_i (Hz)
P_o = 1 W; C_HVPREF = 47 µF
(1) V_P = 17 V; R_L = 2 × 4 Ω
(2) V_P = 25 V; R_L = 2 × 8 Ω
Fig 19. Channel separation as a function of frequency
100
η_po
(%)
75
010aaa149
(2)
(1)
3.0
P
(W)
2.0
010aaa152
(1)
(2)
50
1.0
25
0.0
10^−2
10^−1
1
10
10²
P_o (W/channel)
0
0
5
10
15
P_o (W/channel)
η_po = (2 × P_o) / (2 × P_o + P)
(1) V_P = 17 V; R_L = 2 × 4 Ω; f_i = 1 kHz
(2) V_P = 25 V; R_L = 2 × 8 Ω; f_i = 1 kHz
Fig 20. Output power efficiency as a function of output
power
Power dissipation in junction only.
(1) V_P = 17 V; R_L = 2 × 4 Ω; f_i = 1 kHz
(2) V_P = 25 V; R_L = 2 × 8 Ω; f_i = 1 kHz
Fig 21. Power dissipation as a function of output power
per channel (two channels driven)
TDA8933_1
Preliminary data sheet
Rev. 01 — 15 May 2007
© NXP B.V. 2007. All rights reserved.
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