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TFA9812_2 © NXP B.V. 2009. All rights reserved.
Preliminary data sheet Rev. 02 — 22 January 2009 41 of 66
NXP Semiconductors
TFA9812
BTL stereo Class-D audio amplifier with I
2
S input
13/14 OUT2N
16/17 OUT1P
20/21 OUT2P
23/24 OUT1N
29 DIAG
30 CDELAY
31 POWERUP
33 ENABLE
34 GAIN
35 CSEL
36 ADSEL2/PLIM2
37 ADSEL1/PLIM1
43 TEST2
Table 52. Internal circuitry
…continued
Pin Symbol Equivalent circuitry
010aaa468
V
DDP
13/14, 16/17, 20/21, 23/24
V
SSP1
, V
SSP2
010aaa469
V
DDA
V
SS1
V
SS1
29
010aaa470
200 nA 5 kΩ
2 µA
V
DDA
30
DISCHARGE
V
SS1
010aaa471
31
V
DDA
3 kΩ
250 nA
V
SS1
010aaa472
V
SS1
, V
SS2
, REFA, REFD,
Exposed die-paddle
33, 34, 35, 36, 37, 43
Pull-down
50 µA
ESD