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TFA9812_2 © NXP B.V. 2009. All rights reserved.
Preliminary data sheet Rev. 02 — 22 January 2009 40 of 66
NXP Semiconductors
TFA9812
BTL stereo Class-D audio amplifier with I
2
S input
4 STABA
41 STABD
5 REFA
6V
DDA
7 TEST1
9 STAB2
28 STAB1
10/11 V
SSP2
18/19 V
DDP
26/27 V
SSP1
12 BOOT2N
15 BOOT1P
22 BOOT2P
25 BOOT1N
Table 52. Internal circuitry
…continued
Pin Symbol Equivalent circuitry
V
DDA(3V3),
V
DDD(3V3)
010aaa462
4, 41
V
SS1
,
V
SS2
, REFA, REFD,
Exposed die-paddle
ESD
010aaa463
24 V
V
SS1
, REFD, V
SS2
,
Exposed die-paddle
6
5
010aaa464
7
V
DDA
13 kΩ
V
SS1
V
DDA
010aaa465
9, 28
12 V
V
SS1
010aaa466
24 V
18/19
10/11, 26/27
010aaa467
12 V
12, 15, 22, 25
OUT2N, OUT1P, OUT2P, OUT1N