SGS Thomson Microelectronics TDA7433D Datasheet



BASIC FUNCTION AUDIO PROCESSOR

TWO STEREO AND ONE MONO INPUTS
CONTROLLED

MUTE FUNCTION (SOFTWARE AND HARD­WARE)

VOLUMECONTROLIN 1dB STEP
FOURSPEAKER ATTENUATORS:

– Independentattenuationcontrol
– Independentmute function

ALL FUNCTIONS PROGRAMMABLE VIA

2

I

CBUS

TDA7433

DESCRIPTION

The TDA7433is a volume, tone (bass and treble)
balance (Left/Right) processor for quality audio
applicationsin car radioand Hi-Fisystems.

Control is accomplished by serial bus microproc­essor interface.

The AC signal setting is obtained by resistor net­works and switches combined with operational
amplifiers.

BLOCK DIAGRAM

100nF 100nF

BINL BOUTL TRL

10 9 11

6

IN1_L

3

IN2_L

MONO IN/MUTE

MUX

4

VOL BASS TREBLE

S BUS DECODER + LATCHES

SO20

ORDERING NUMBER: TDA7433D

Thanks to the advanced BIPOLAR/CMOS Tech­nology, the external components have been re­duced.

4.7K

2.7nF

SPKR

ATT

SPKR

ATT

16

14

18
19

LEFT FRONT

LEFT REAR

SCL
SDA

November 1999

IN2_R
IN1_R

15

SPKR

ATT

SPKR

ATT

13

D95AU354A

RIGHT FRONT

RIGHT REAR

2
5

17

S

MUX

SUPPLYV

20

GND

VOL BASS TREBLE

18712

BINR BOUTR TRRCREF

100nF 100nF

4.7K

2.7nF

1/10

TDA7433

ABSOLUTE MAXIMUM RATINGS

Symbol Parameter Value Unit

V

S

T

amb

T

stg

QUICK REFERENCEDATA

Symbol Parameter Min. Typ. Max. Unit

V

S

V

CL

THD Total Harmonic Distortion (V =1Vrms f = 1kHZ) 0.05 %

S/N Signal to Noise Ratio 102 dB

Sc Channel Separationf = 1kHz 100 dB

Operating Supply Voltage 10.2 V
Operating TemperatureRange -40 to 85 °C
Storage Temperature Range -55 to +150 °C

Supply Voltage 7 9 10.2 V
Max. Input SignalHandling 1.3 1.6 Vrms

Volume Control1dB step -79 +32 dB
Bass Control2dB step -18 +18 dB
Treble Control2dB step -14 +14 dB
Speaker Attenuators -37.5 0 dB
Mute Attenuation 100 dB

PIN CONNECTION(Top View)

MONO IN/MUTE

BOUT_R

BOUT_L TRR

CREF

IN2_R

IN2_L

2
3
4

IN1_R

IN1_L

5
6
7

BIN_R

8
9

BIN_L TRL

10

D95AU355A

20
19
18
17
16
15
14
13
12
11

GND1
SDA
SCL
V

S

OUT_LF
OUT_RF
OUT_LR
OUT_RR

THERMAL DATA

Symbol Parameter Value Unit

Thermal ResistanceJunction-pins Max. 150 °C/W

2/10

R

th j-pins

APPLICATIONDIAGRAM

TDA7433

4.7K

100nF 100nF

10 9 11

100nF

IN1_L

6

IN2_L

3

100nF

100nF

MONO/

MUTE

100nF

IN2_R

IN1_R

100nF

9V

V

S

100nF

4

2

5

V

17

S

SUPPLY

20

GND

MUX

MUX

VOL BASS TREBLE

S BUS DECODER+ LATCHES

VOL BASS TREBLE

1 8712
CREF BINR BOUTR TRR

10µF

100nF 100nF

4.7K

2.7nF

TRLBOUTLBINL

2.7nF

SPKR

ATT

SPKR

ATT

SPKR

ATT

SPKR

ATT

16

14

18
19

15

13

D95AU356A

LEFT FRONT

LEFT REAR

SCL
SDA

RIGHT FRONT

RIGHT REAR

3/10