NXP Semiconductors TDA8932B - Manual (Page 30)

TDA8932B_4 © NXP B.V. 2008. All rights reserved.
Product data sheet Rev. 04 — 18 December 2008 30 of 48
NXP Semiconductors
TDA8932B
Class-D audio amplifier
V
i
= 100 mV (RMS); R
i
= 0
Ω
; Cse = 1000
µ
F
(1) V
P
= 30 V; R
L
= 2
×
8
Ω
(2) V
P
= 22 V; R
L
= 2 × 4 Ω
V
ripple
= 500 mV (RMS) referenced to ground; R
i
= 0
Ω
(shorted input)
(1) V
P
= 30 V; R
L
= 2
×
8
Ω
(2) V
P
= 22 V; R
L
= 2 × 4 Ω
Fig 15. Gain as a function of frequency Fig 16. Supply voltage ripple rejection as a function of
frequency
001aad776
20
30
40
G v
(dB)
10
f
i
(Hz)
10 10 5 10 4 10 2 10 3
(1)
(2)
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−
60
− 40
− 80
− 20
0
SVRR
(dB)
− 100
f
i
(Hz)
10 10 5 10 4 10 2 10 3
(1)
(2)
R
i
= 0 Ω ; 20 kHz brick-wall filter AES17
(1) V
P
= 22 V; R
L
= 2
×
4
Ω
(2) V
P
= 30 V; R
L
= 2
×
8
Ω
P
o
= 1 W; C
HVPREF
= 47 µ F
(1) V
P
= 22 V; R
L
= 2
×
4
Ω
(2) V
P
= 30 V; R
L
= 2
×
8
Ω
Fig 17. Signal-to-noise ratio as a function of output
power per channel
Fig 18. Channel separation as a function of frequency
001aad778
P
o
(W/channel)
10
− 2 10 2 10 10
− 1 1
40
80
120
S/N
(dB)
0
(2)
(1)
001aad779
− 60
− 40
−
80
−
20
0
α
cs
(dB)
− 100
f i (Hz)
10 10 5 10 4 10 2 10 3
(1)
(2)