TDA7339

3 BAND DIGITAL CONTROLLED AUDIO PROCESSOR

PRODUCT PREVIEW

THREE STEREO INPUT

ONE RECORD OUTPUT

ONE STEREO OUTPUT

TWO INDEPENDENT VOLUME CONTROL IN

1.0dB STEPS

TREBLE, MIDDLE AND BASS CONTROL IN

1.0dB STEPS

ALL FUNCTIONS PROGRAMMABLE VIA SE-

RIAL I

DESCRIPTION

The TDA7339 is a volume and tone (bass , mid-

dle and treble) processor for quality audio appli-

cation in car radio and Hi-Fi system.

Control is accomplished by serial I

processor interface.

The AC signal setting is obtained by resistor net-

works and switches combined with operational

amplifiers.

Thanks to the used BIPOLAR/MOS Technology,

Low Distortion, Low Noise and Low DC stepping

are obtained.

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

July 1999

1st VOL

1st VOL

TREBLE

TREBLE

SERIAL BUS DECODE & LATCHES

MIDDLE

BASS

2nd VOL

2nd VOL

MIDDLE

BASS

OUT L

SCL

ADDR

DIG.GND

OUT R

TREBLE(R)

M OUT(R)

M IN(R)

B OUT(R)

B IN(R)

BUS

M OUT(L)

TREBLE(L)

M IN(L)

B OUT(L)

B IN(L)

D94AU067C

IN1(L)

3 x

2.2

µF

3 x

2.2

µF

C7

5.6nF

C9

18nF

C10

22nF

C13

100nF

C14

100nF

R3

2.7K

R1

2.7K

C16

100nF

C15

100nF

C12

22nF

C11

18nF

C8

5.6nF

10

µF

R4

5.6K

R2

2.7K

SUPPLY

CREF

ANAL.GND

REC OUT(R)

REC OUT(L)

IN2(L)

MULTIPLEXER

MUTE

MUTE

SOFTMUTE

SDA

SOFTMUTE

CMUTE

IN3(L)

IN1(R)

IN2(R)

IN3(R)

2

4

5

27

25

24

1

16

28

21

26

23

22

20

19

17

11

15

18

13

14

12

10

9

7

6

3

8

C1

C2

C3

C4

C5

C6

BLOCK DIAGRAM

ORDERING NUMBER: TDA7339

DIP28

®

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