TDA8932B_3 © NXP B.V. 21 June 2007. All rights reserved.
Product data sheet Rev. 03— 21 June 2007 30 of 48
NXP Semiconductors TDA8932B
Class-D audio amplifier

Vi= 100 mV (RMS); Ri=0; Cse = 1000 µF

(1) VP= 30 V; RL=2×8

(2) VP= 22 V; RL=2×4

Vripple = 500 mV (RMS) referenced to ground;

Ri=0 (shorted input)

(1) VP=30V; R

L=2×8

(2) VP=22V; R

L=2×4

Fig 15. Gain as a function of frequency Fig 16. Supply voltage ripple rejection as a function of

frequency

001aad776
20
30
40
Gv
(dB)
10
fi (Hz)
10 105
104
102103
(1)
(2)
001aad777
60
40
80
20
0
SVRR
(dB)
100
fi (Hz)
10 105
104
102103
(1)
(2)

Ri=0; 20 kHz brick-wall filter AES17

(1) VP= 22 V; RL=2×4

(2) VP= 30 V; RL=2×8

Po= 1 W; CHVPREF =47µF

(1) VP=22V; R
L=2×4

(2) VP=30V; R

L=2×8

Fig 17. Signal-to-noise ratio as a function of output

power per channel Fig 18. Channel separation as a function of frequency

001aad778
Po (W/channel)
102102
101011
40
80
120
S/N
(dB)
0
(2)
(1)
001aad779
60
40
80
20
0
αcs
(dB)
100
fi (Hz)
10 105
104
102103
(1)
(2)