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 I2S 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. VP = 12 V; RL = 2 × 6 Ω; fi = 1 kHz; THD = 1 % b. VP = 12 V; RL = 2 × 6 Ω; fi = 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. VP = 15 V; RL = 2 × 8 Ω; fi = 1 kHz; THD = 1 % d. VP = 15 V; RL = 2 × 8 Ω; fi = 1 kHz; THD = 10 %

Fig 24. Output power as a function of supply voltage

010aaa492
VP (V)
82016 1812 1410
10
15
5
20
25
Po
(W/chan.)
0
(1)
(2)
(3)
(4)
010aaa493
VP (V)
8201816141210
10
15
5
20
25
Po
(W/chan.)
0
(1)
(2)
(3)
(4)
010aaa494
VP (V)
820161210 14 18
10
15
5
20
25
Po
(W/chan.)
0
(1)
(2)
(3)
(4)
010aaa495
VP (V)
820161210 14 18
10
15
5
20
25
Po
(W/chan.)
0
(1)
(2)
(3)
(4)