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TDA8950_1 © NXP B.V. 2008. All rights reserved.
Preliminary data sheet Rev. 01 — 9 September 2008 3 of 39
NXP Semiconductors
TDA8950
2 × 150 W class-D power amplifier
6. Block diagram
The pin numbers in parenthesis refer to type number TDA8950J.
Fig 1. Block diagram
001aah653
OUT1
V
SSP1
V
DDP2
DRIVER
HIGH
OUT2
BOOT2
TDA8950TH
(TDA8950J)
BOOT1
DRIVER
LOW
SWITCH1
CONTROL
AND
HANDSHAKE
PWM
MODULATOR
MANAGER
OSCILLATOR
TEMPERATURE SENSOR
CURRENT PROTECTION
VOLTAGE PROTECTION
STABI
MODE
INPUT
STAGE
mute
9 (3)
8 (2)
IN1M
IN1P
22 (15)
21 (14)
20 (13)
17 (11)
16 (10)
15 (9)
VSSP2VSSP1
DRIVER
HIGH
DRIVER
LOW
SWITCH2
CONTROL
AND
HANDSHAKE
PWM
MODULATOR
11 (5)
n.c.
7 (1)
OSC
2 (19)
SGND
6 (23)
MODE
INPUT
STAGE
mute
5 (22)
4 (21)
IN2M
IN2P
19 (-)24 (17)
VSSD n.c.
1 (18)
VSSA
12 (6)
n.c.
3 (20)
VDDA
10 (4)
n.c.
23 (16)13 (7)18 (12) 14 (8)
VDDP2
PROTSTABI
VDDP1