TDA8922 View Datasheet(PDF) - Philips Electronics

Part Name

Description

Manufacturer

TDA8922

2×25 W class-D power amplifier

Philips Electronics 

Philips Semiconductors

2 × 25 W class-D power amplifier

6 BLOCK DIAGRAM

Objective specification

TDA8922

handbook, full pagewidth VDDA2 VDDA1

STABI PROT

VDDP2

VDDP1

IN1−

IN1+

SGND1

OSC

MODE

SGND2

IN2 +

IN2 −

3 (20) 10 (4)

18 (12) 13 (7)

23 (16)

14 (8)

15 (9)

9 (3)

8 (2)

INPUT

STAGE

11 (5) mute

7 (1)

6 (23)

OSCILLATOR

MODE

PWM

MODULATOR

STABI

MANAGER

RELEASE1

SWITCH1 CONTROL

AND

ENABLE1 HANDSHAKE

DRIVER

HIGH

DRIVER

LOW

TEMPERATURE SENSOR

CURRENT PROTECTION

TDA8922TH

(TDA8922J)

2 (19)

mute

5 (22)

4 (21)

INPUT

STAGE

PWM

MODULATOR

ENABLE2

SWITCH2

RELEASE2

CONTROL

AND

HANDSHAKE

DRIVER

HIGH

DRIVER

LOW

16 (10)

VSSP1

VDDP2

22 (15)

21 (14)

BOOT1

OUT1

BOOT2

OUT2

1 (18) 12 (6)

VSSA2 VSSA1

24 (17) 19 (-)

VSSD

HW (1)

17 (11) 20 (13)

VSSP1 VSSP2

MGU994

(1) Pin HW (TDA8922TH only) should be connected to pin VSSD in the application.

Pin numbers in parenthesis refer to the TDA8922J.

Fig.1 Block diagram.

2003 Mar 20

4

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