TDA8932B_3
© NXP B.V. 21 June 2007. All rights reserved.
Product data sheet
Rev. 03— 21 June 2007
34 of 48
NXP Semiconductors
TDA8932B
Class-D audio amplifier
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
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 28. Gain as a function of frequency
Fig 29. Supply voltage ripple rejection as a function of
frequency
001aae116
20
30
40
G
v
(dB)
10
f
i
(Hz)
10
10
5
10
4
10
2
10
3
(1)
(2)
001aae117
−
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) R
L
= 4
Ω
; V
P
= 12 V
(2) R
L
= 8
Ω
; V
P
= 22 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 30. Signal-to-noise ratio as a function of output
power
Fig 31. Output power as a function of supply voltage
001aae118
P
o
(W)
10
−
2
10
2
10
10
−
1
1
40
80
120
S/N
(dB)
0
(2)
(1)
001aaf893
V
P
(V)
10
34
26
18
14
30
22
40
50
30
20
10
60
70
P
o
(W)
0
(2)
(1)
(3)
(4)
