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TF
A9812_2
© NXP B
.V
. 2009. All r
ights reser
v
ed.
Preliminar
y data sheet
Re
v
. 02 — 22 Jan
uar
y 2009
52 of 66
NXP Semiconductor
s
TF
A9812
BTL stereo Class-D audio amplifier with I
2
S input
14.4.1 I
2
S slave mode and Legacy control mode
Fig 13. Simplified application diagram for I
2
S slave mode and Legacy control mode
TFA9812
ADSEL1/PLIM1
OUT1N
OUT1N
BOOT2P
OUT2P
OUT2P
V
DDP
V
DDP
OUT1P
OUT1P
BOOT1P
OUT2N
OUT2N
ADSEL2/PLIM2
XT
ALIN
XT
ALOUT
V
DD
A(3V3)
ST
ABA
REF
A
V
DD
A
TEST1
V
SS1
ST
AB2
V
SSP2
V
SSP2
BOO
T2N
CSEL
24 dB GAIN
ENABLE
AV
O
L
PO
WER
UP
CDELA
Y
DIA
G
ST
AB1
V
SSP1
V
SSP1
BOO
T1N
SCL/SFOR
SDA/MS
V
DDD(3V3)
STABD
REFD
TEST2
DATA
WS
BCK
MCLK
V
SS2
EXPOSED DIE PADDLE
36
37
38
39
40
41
42
43
44
45
46
47
48
35
34
33
32
31
30 29
28
27
26
25
ENABLE
DC-VOLUME CONTROL
POWERUP
DIAGNOSTIC
CDELAY
1 nF
CSTAB
100 nF
I
2
S DATA
I
2
S WS
I
2
S BCK
I
2
S MLCK (optional)
V
DDD
Cvddd
100 nF
CSTABD
1
µ
F
CVDDA
100 nF
3.3 V
VPA
CSTAB
100 nF
CVPA
100 nF
CSTAB
100 nF
1
2
3
4
5
6
7
8
9
10
11
12
010aaa476
CBOOT
15 nF
CSN
470 pF
CSN
470 pF
CLC
680 nF
CLC
680 nF
CBOOT
15 nF
RSN 10
Ω
RSN 10
Ω
CLC
680 nF
CLC
680 nF
Lic
S2
F2
S1
F1
15
µ
H
24
23
22
21
20
19
18
17
16
15
14
13
CVDDP
CVDDP
VP
OUT1
+
−
6
Ω
to 8
Ω
OUT2
+
−
6
Ω
to 8
Ω
CBOOT
15 nF
CBOOT
15 nF
F2
S2
F1
S1
15
µ
H
Lic
RSN 10
Ω
RSN 10
Ω
CSN
470 pF
CSN
470 pF
POWER IN
V
P
= 8 V to 20 V
GND
CVDDP
220
µ
F / 25 V
RVDDA
10
Ω
VPA
VP
100 nF
100 nF
RSTABA
1 k
Ω
