TDA7463D

LOW VOLTAGE TONE CONTROL

DIGITALLY CONTROLLED AUDIO PROCESSOR

1 STEREO INPUT

1 STEREO OUTPUT

TREBLE BOOST

BASS CONTROL

BASS AUTOMATIC LEVEL CONTROL

VOLUME CONTROL IN 1dB STEPS

MUTE

STAND-BY FUNCTION SOFTWARE CON-

TROLLED

ALL FUNCTION ARE PROGRAMMABLE VIA

SERIAL BUS

DESCRIPTION

The TDA7463 is a volume tone (bass and treble)

processor for quality audio applications in Low

voltage supply portable systems.

Bass ALC (Automatic Level Control) function can

be adjusted by a dedicated pin. The control of all

the functions is accomplished by serial bus.

The AC signal setting is obtained by resistor net-

works and switches combined with operational

amplifiers.

Thanks to the used BIPOLAR/CMOS Technology,

Low Distortion, Low Noise and DC stepping are

obtained.

May 2002

®

IN-R

ALC

IN-L

C1 0.47

µF

C2 0.47

µF

SUPPLY

VS

VS

VS

VS

GND

CREF

TREBLE-L

D96AU482B

I2C BUS DECODER + LATCHES

SCL

I2C

SDA

SCL

SDA

OUT-L

OUT-R

C7

22

µF

C8

100nF

C9

100

µF

+

TREBLE-R

RB

RB

BASSI-R

BASSO-R

x1

x5

x1

x5

C3 0.47

µF

C4

3.3nF

C12 3.3nF

R1

1M

Ω

R5

5.6K

100nF

100nF

C6

100nF

C5

100nF

C11

C10

R2

5.6K

R3

1K

Ω

TREBLE

-63dB

CONTROL

-63dB

CONTROL

TREBLE

BASS

BASS

BASS_ALC

CONTROL

HALF_WAVE

RECTIFIER

50K

50K

0/-10dB

0/-10dB

BASSO-L

BASSI-L

R4

1K

Ω

DGND

1

2

3

4

BLOCK DIAGRAM

ORDERING NUMBER: TDA7463D

SO16

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