TDA8932B_15 Datasheet, PDF (34/48 Pages) NXP Semiconductors – Class-D audio amplifier

NXP Semiconductors
TDA8932B
Class-D audio amplifier
40
G_v
(dB)
30
001aae116
(2) (1)
20
10
10
10²
10³
10⁴
10⁵
f_i (Hz)
V_i = 100 mV (RMS); R_i = 0 Ω
(1) V_P = 12 V; R_L = 4 Ω
(2) V_P = 22 V; R_L = 8 Ω
Fig 28. Gain as a function of frequency
0
SVRR
(dB)
−20
001aae117
−40
−60
(1)
−80
(2)
−100
10
10²
10³
10⁴
10⁵
f_i (Hz)
V_ripple = 500 mV (RMS) referenced to ground; R_i = 0 Ω
(shorted input)
(1) V_P = 22 V; R_L = 8 Ω
(2) V_P = 12 V; R_L = 4 Ω
Fig 29. Supply voltage ripple rejection as a function of
frequency
120
S/N
(dB)
80
001aae118
(2)
(1)
40
0
10^−2
10^−1
1
10
10²
P_o (W)
R_i = 0 Ω; 20 kHz brick-wall filter AES17
(1) R_L = 4 Ω; V_P = 12 V
(2) R_L = 8 Ω; V_P = 22 V
Fig 30. Signal-to-noise ratio as a function of output
power
70
P_o
(W)
60
001aaf893
50
(3)
40
(1)
(4)
30
(2)
20
10
0
10
14
18
22
26
30
34
V_P (V)
f_i = 1 kHz (short time P_O); dashed line will require heat
sink for continuous time output power
(1) R_L = 4 Ω; THD+N = 10 %
(2) R_L = 4 Ω; THD+N = 0.5 %
(3) R_L = 8 Ω; THD+N = 10 %
(4) R_L = 8 Ω; THD+N = 0.5 %
Fig 31. Output power as a function of supply voltage
TDA8932B_4
Product data sheet
Rev. 04 — 18 December 2008
© NXP B.V. 2008. All rights reserved.
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