TDF8544
NXP Semiconductors
I2C-bus controlled 4 50 W power amplifier
6.2 Pin description
Table 3.
Symbol Pin
TDF8544J/SD
Pin description
Description
TDF8544TH
ADSEL
STB
1
10
11
I2C-bus address select
stand-by (I2C-bus mode) or mode pin (legacy mode)
programmable second clip indicator
2
PGND2
OUT2
DIAG
OUT2+
VP2
3
14
15
9
channel 2 power ground
4
channel 2 negative output (right rear)
diagnostic and clip detection output
channel 2 positive output (right rear)
power supply voltage 2
5
6
13
16
18
23
17
24
25
26
27
28
29
30
2
7
OUT1
PGND1
OUT1+
SVR
8
channel 1 negative output (right front)
channel 1 power ground
9
10
11
12
13
14
15
16
channel 1 positive output (right front)
half supply voltage filter capacitor
channel 1 input
IN1
IN2
channel 2 input
SGND
IN4
signal ground
channel 4 input
IN3
channel 3 input
ACGND 17
AC ground
OUT3+
PGND3
OUT3
VP1
18
19
20
21
22
23
24
25
26
27
-
channel 3 positive output (left front)
channel 3 power ground
32
1
channel 3 negative output (left front)
power supply voltage 1
3
OUT4+
SCL
6
channel 4 positive output (left rear)
I2C-bus clock input
7
OUT4
PGND4
SDA
4
channel 4 negative output (left rear)
5
channel 4 power ground
8
I2C-bus data input and output
heatsink connection; must be connected to ground
not connected
TAB
36
n.c.
12, 19, 20,
21, 22, 31,
33, 34, 35
TDF8544
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© NXP B.V. 2011. All rights reserved.
Product data sheet
Rev. 2 — 29 August 2011
6 of 54
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