TFA9812_2
© NXP B.V. 2009. All rights reserved.
Preliminary data sheet
Rev. 02 — 22 January 2009
59 of 66
NXP Semiconductors
TFA9812
BTL stereo Class-D audio amplifier with I
2
S input
(1) Power limiter = 0 dB
(2) Power limiter =
−
1.5 dB
(3) Power limiter =
−
3 dB
(4) Power limiter =
−
4.5 dB
(1) Power limiter = 0 dB
(2) Power limiter =
−
1.5 dB
(3) Power limiter =
−
3 dB
(4) Power limiter =
−
4.5 dB
a. V
P
= 12 V; R
L
= 2
×
6
Ω
; f
i
= 1 kHz; THD = 1 %
b. V
P
= 12 V; R
L
= 2
×
6
Ω
; f
i
= 1 kHz; THD = 10 %
(1) Power limiter = 0 dB
(2) Power limiter =
−
1.5 dB
(3) Power limiter =
−
3 dB
(4) Power limiter =
−
4.5 dB
(1) Power limiter = 0 dB
(2) Power limiter =
−
1.5 dB
(3) Power limiter =
−
3 dB
(4) Power limiter =
−
4.5 dB
c. V
P
= 15 V; R
L
= 2
×
8
Ω
; f
i
= 1 kHz; THD = 1 %
d. V
P
= 15 V; R
L
= 2
×
8
Ω
; f
i
= 1 kHz; THD = 10 %
Fig 24. Output power as a function of supply voltage
010aaa492
V
P
(V)
8
20
16
18
12
14
10
10
15
5
20
25
P
o
(W/chan.)
0
(1)
(2)
(3)
(4)
010aaa493
V
P
(V)
8
20
18
16
14
12
10
10
15
5
20
25
P
o
(W/chan.)
0
(1)
(2)
(3)
(4)
010aaa494
V
P
(V)
8
20
16
12
10
14
18
10
15
5
20
25
P
o
(W/chan.)
0
(1)
(2)
(3)
(4)
010aaa495
V
P
(V)
8
20
16
12
10
14
18
10
15
5
20
25
P
o
(W/chan.)
0
(1)
(2)
(3)
(4)
