TDA8954_1 © NXP B.V. 2009. All rights reserved.
Product data sheet Rev. 01 — 24 December 2009 34 of 46
NXP Semiconductors
TDA8954
2 × 210 W class-D power amplifier
V
DD
= 30 V, V
SS
= −30 V, f
osc
= 325 kHz (external 650 kHz oscillator), V
i
= 100 mV, C
i
= 330 pF.
(1) 1 × 8 Ω configuration; L
LC
= 15 μH, C
LC
= 680 nF, V
DD
= 41 V, V
SS
= −41 V.
(2) 2 × 4 Ω configuration; L
LC
= 15 μH, C
LC
= 680 nF, V
DD
= 41 V, V
SS
= −41 V.
(3) 2 × 3 Ω configuration; L
LC
= 15 μH, C
LC
= 680 nF, V
DD
= 39 V; V
SS
= −39 V.
Fig 26. Frequency response
Ripple on VDD, short on input pins.
V
DD
= 41 V, V
SS
= −41 V, V
ripple
= 2 V (p-p), 2 × 4 Ω SE configuration.
(1) Operating mode.
(2) Mute mode.
Fig 27. SVRR as a function of ripple frequency, ripple on V
DD
(2)
(1)
(3)
010aaa610
Fi (Hz)
10 10
5
10
4
10
2
10
3
20
10
30
40
Gain
(dB)
0
(2)
(1)
010aaa611
Fi (Hz)
10 10
5
10
4
10
2
10
3
−60
−40
−80
−20
0
SVRR
(dB)
−100
