TDA7391PD

32W BRIDGE CAR RADIO AMPLIFIER

PRODUCT PREVIEW

HIGH POWER CAPABILITY:

40W/3.2

Ω EIAJ

32W/3.2

26W/4

DIFFERENTIAL INPUTS (EITHER SINGLE

ENDED OR DIFFERENTIAL INPUT SIGNAL

ARE ACCEPTED)

MINIMUM EXTERNAL COMPONENT COUNT:

- NO BOOTSTRAP CAPACITORS

- NO BOUCHEROT CELLS

- INTERNALLY FIXED GAIN (30dB)

- NO SVR CAPACITOR

ST.-BY FUNCTION (CMOS COMPATIBLE)

PROGRAMMABLE TURN-ON/OFF DELAY

NO AUDIBLE POP DURING MUTE AND ST-

BY OPERATIONS

PROTECTIONS:

THE LOAD)

VERY INDUCTIVE LOADS

CHIP OVERTEMPERATURE

LOAD DUMP

OPEN GND

ESD

DESCRIPTION

The TDA7391PD is a BRIDGE class AB audio

power amplifier specially intended for car radio

High Power applications.

The high power capability together with the possi-

bility to operate either in DIFFERENTIAL INPUT

MODE or SINGLE ENDED INPUT MODE makes

it suitable for boosters and high end car radio

equipments.

The exclusive fully complementary output stage

and the internal fixed gain configuration drop the

external component count.

The on board clipping detector allows easy imple-

mentation of gain compression systems.

This is preliminary information on a new product now in development. Details are subject to change without notice.

October 1998

®

14

15

9

IN-

C2 0.22

µF

C1 0.22

µF

IN+

4

ST-BY

8 1,10,11,20

OUT+

OUT-

2

19

17

Vref

CD

TDA7391PD

D98AU871

R1

4.7K

Ω

C4 1000

µF

GND

R2

56K

Ω

C3

33

µF

C5 100nF

516

TO

µC

+VS

SW1

12

Figure 1: Test And Application Circuit

PowerSO20

ORDERING NUMBER: TDA7391PD

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