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TDA8950_2 © NXP B.V. 2009. All rights reserved.
Product data sheet Rev. 02 — 11 June 2009 22 of 39
NXP Semiconductors
TDA8950
2 × 150 W class-D power amplifier
(1) The value of C
PROT
can be in the range 10 pF to 220 pF (see Section 8.3.2)
Fig 10. Typical application diagram
010aaaxxx
C
IN
IN1P
IN1
+
−
+
−
IN2
IN1M
SGND
2
3
19
22
21
20 18
470 nF
470 nF
C
IN
C
IN
IN2P
IN2M
470 nF
470 nF
C
IN
220 nF
VDDA VSSA
177
V
SSP
VDDA
VSSA
PROT
13
14
15
VSSP
VSSP2
OUT2
BOOT2
16
VDDP
VDDP2
VSSD
C
VDDA
220 nF
C
VSSA
100 nF
C
VDDP
15 nF
C
BO
100 nF
C
VSSP
100 nF
C
VP
VSSP
VSSP
VSSP
VDDP
VDDP
VDDP
+
−
+
−
11
VSSP1
8
VDDP1
23
MODE
mode
control
1
OSC
6
4
n.c.
5
n.c.
n.c.
100 nF
C
VDDP
100 nF
C
VSSP
100 nF
C
VP
C
PROT
(1)
V
SSA
12
STABI
C
STAB
470 nF
R
OSC
30 kΩ
10
9
OUT1
BOOT1
15 nF
C
BO
L
LC
VSSA
R
VDDA
10 Ω
R
VSSA
10 Ω
C
VP
22 µF
C
VDDP
470 µF
C
VSSP
470 µF
GND
VDDP
VSSP
VDDA
VDDP
VSSP
VSSA
R
SN
10 Ω
R
SN
10 Ω
C
SN
220 pF
C
SN
220 pF
C
SN
220 pF
C
LC
C
LC
C
SN
220 pF
R
ZO
22 Ω
C
ZO
100 nF
R
ZO
22 Ω
C
ZO
100 nF
LOAD L
LC
C
LC
3 Ω to 6 Ω 15 µH 680 nF
4 Ω to 8 Ω 22 µH 470 nF
SINGLE-ENDED
OUTPUT FILTER VALUES
TDA8950J
L
LC
SGND
mode control
mute/
operating
10 µF
5.6 kΩ
+
5 V
470 Ω
standby/
operating
5.6 kΩ
T2
HFE > 80
T1
HFE > 80
470 kΩ
+
5 V
470 kΩ
10 kΩ10 kΩ
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