ST TDA7430 User Manual

DIGITALLY CONTROLLED AUDIO PROCESSOR WITH

Figure 1. Package

T

SURROUND SOUND MATRIX AND VOICE CANCELLER

1FEATURES

■ 1 STEREO (4STEREO) IN PU T + 1 MIXER

INPUT

■ INPUT ATTENUATION CONTROL IN 0.5dB

STEP

■ VOICE CANCELLER IS AVAIL ABL E

■ TREBLE MIDDLE AND BASS CONTROL

■ THREE SURROUND MODES ARE

AVAILABLE – MUSIC: 4 SELECTABLE RESPONSES – MOVIE AND SIMULATED:

256 SELECTABLE RESPONSES

■ 2 SPEAKERS AND 2 RECORD

ATTENUATORS: – 2 INDEPENDENT SPEAKERS AND 2 INDE-

PENDENT RECORD CONTROL IN 1dB STEP FOR BALANCE FACILITY

– AVAILABIL ITY OF LO UDSPEA KER EQUAL -

IZATION FIXED BY EXTERNAL COMPONENTS

– INDEPENDENT MUTE FUNCTION

■ ALL FUNCTIONS PROGRAMMABLE VIA

SERIAL BUS

TDA7430 TDA7431

SDIP42 TQFP44

able 1. Order Codes

Part Number Package

TDA7431S SDIP42

TDA7430 TQFP44

TDA7430TR Tape & Reel

2 DESCRIPTION

The TDA7430/TDA7431 is volume tone (bass middle and treble) balance (Left/Right) processors canceller for quality audio applications in car radio and Hi-Fi systems.

They reproduce surround sound by using programmable phase shifters and a signal matrix.

Control of all the functions is accomplished by serial bus. The AC signal setting is obtained by resistor networks and switches combined with operational amplifiers. Thanks to the used BIPOLAR/CMOS Technology,

Low Distortion, Low Noise an d DC stepping are obtained.

voice

Figure 2. Pin Connection (TDA7430)

June 2004

HP2.

REAROUT

REARIN

VAR_L

BASSO_L

VAR_R

BASSO_R

BASS_LO

BASS_LI

LP

PS1

PS2

PS3

44 43 42 413940 38 37 36 35 34

1

LP1

2

HP1

3 4 5 6 7 8 9 10

12 13 14 15 16

BASS_RI

BASS_RO

MIDDLE_LI

MIDDLE_LO

S

PS4

CREF

R_IN4

V

171118 19 20 21 22

TREBLE_L

TREBLE_R

MIDDLE_RI

MIDDLE_RO

R_IN3

AGND

R_IN2

SDA

LPVC

SCL

33 32 31 30 29 28 27 26 25 24 23

D95AU220B

R_IN1 MIX L_IN1 L_IN2 L_IN3 L_IN4 RECOUT_L RECOUT_R L_OUT R_OUT DIG_GND

REV. 10

1/23

TDA7430 - TDA7431

D95AU219B

Figure 3. Pin Connection (TDA7431)

VOUTREF

VAR_L

BASSO_L

VAR_R

BASSO_R

BASS_LO

BASS_LI

BASS_RO

BASS_RI

MIDDLE_LO

MIDDLE_LI

MIDDLE_RO

MIDDLE_RI

PS4 PS3 PS2 PS1

LP

LP1 HP1 HP2

42

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21

V

S

41

CREF

40

NBRO

39

NBRIN

38 LPVC

R_IN37 MIX

36

L_IN

35

NBLIN

34

NBLO

33

RECOUT_L

32

RECOUT_R

31

L_OUT

30

R_OUT

29

DIG_GND28 SCL

27

SDA

26

ADDR

25

AGND

24

TREBLE_L

23

TREBLE_R

22

Table 2. Absolute Maximum Ratings

Symbol Parameter Value Unit

V

T

amb

T

stg

Operating Supply Voltage 11 V

S

Operating Ambient Temperature 0 to 70 °C Storage Temperature Range -55 to 150 °C

Table 3. Quick Reference Data

Symbol Parameter Min. Typ. Max. Unit

V

THD Total Harmonic Distortion V = 0.1Vrms f = 1KHz 0.01 0.1 %

S/N Signal to Noise Ratio V

S

Supply Voltage 7 9 10.2 V

S

Max Input Signal Handling 2 V

CL

= 1Vrms (mode = OFF) 106 dB

out

Channel Separation f = 1KHz 90 dB

C

Treble Control (2dB step) -14 14 dB Middle Control (2dB step) -14 14 dB Bass Control (2dB step) -14 14 dB Balance Control 1dB step (LCH, RCH) -79 0 dB Mute Attenuation 100 dB

RMS

Table 4. Thermal Data

Symbol Parameter Value Unit

R

2/23

th j-pin

Thermal Resistance Junction-pins 85 °C/W

Figure 4. TEST CIRCUIT (TDA7430)

680nF

D95AU224B

TDA7430 - TDA7431

2.7K

22nF

4.7nF

100nF

1.2nF

5.6nF

100nF

22nF

18nF

MIDDLE-LO

22nF

MIDDLE-RO

PS4

PS3

PS2

PS1

LP1

TREBLE-R

TREBLE-L

LPVC

MIDDLE-LI

MIDDLE-RI

D95AU225B

2.2µF

9

40

41

42

43

LP

44

1

18

19

34

14

15

16

17

RECOUT-L RECOUT-R L-OUT R-OUT

BASSO-LVAR-RBASSO-R

876

27 26 25 24 23 22 21

2.2µF

VAR-L

2.2µF

REARIN

REAROUT

45

TDA7430

DIG-GND SCL SDA

0.47µF

R-IN4

R-IN3

37 36 35

20

AGND

32

HP2

0.47µF R-IN2

HP1

32

33

31

30

29

28

39

38

10

11

12

13

R-IN1

L-IN1

L-IN2

L-IN3

L-IN4 V

S

CREF

BASS-LO

BASS-LI

BASS-RO

BASS-RI

0.47µF

100nF10µF

22µF

220nF 100nF

100nF

5.6K

100nF

5.6K

1µF

MIX

Figure 5. TEST CIRCUIT (TDA7431)

2.2µF

22nF

4.7nF

100nF

1.2nF

5.6nF

100nF

22nF

18nF

2.7K

18nF

2.7K

MIDDLE-LO

22nF

MIDDLE-RO

MIDDLE-RI

PS4

PS3

PS2

PS1

LP1

TREBLE-R

TREBLE-L

LPVC

MIDDLE-LI

12 11 10 8 7 37 36 35

13

2

3

4

LP

5

6

22

23

38

18

19

20

21

32 31 30 29 28 27 26 25 24

9

VOUTREF RECOUT-L RECOUT-R L-OUT R-OUT

2.2µF

VAR-L

TDA7431

680nF

0.47µF

HP1

HP2BASSO-LVAR-RBASSO-R

1µF

R-IN

DIG-GND SCL SDA ADDR AGND

MIX

0.47µF L-IN

V

S

421

100nF10µF

41

40

39

34

33

NBRO

NBRIN

NBLIN

NBLO

15K

220nF

7.5K

220nF

7.5K

22µF

CREF

100nF

14

BASS-LO

100nF

15

BASS-LI

BASS-RO

16

5.6K

100nF

17

BASS-RI

5.6K

3/23

TDA7430 - TDA7431

Figure 6. Block Diagram (TDA7430)

RECOUT-L

27

L-OUT

25

ATT

SPKR

79dB CONTROL

MUTE

SCL

SDA

222123

DIG GND

SPKR

R-OUT

RECOUT-R

24

26

ATT

MUTE

79dB CONTROL

D95AU221B

-

+

30K

2.2µF

BASSO-L VAR-L

79dB CONTROL

FIX

BASS-LO

100nF

5.6K 100nF

22nF

2.7K 18nF

5.6nF

10 7 6

RB

BASS-LI

MIDDLE-LO

RM

MIDDLE-LI

15 14 11

19

TREBLE-L

PS4

22nF

4.7nF

100nF

5.6nF 680nF

RPS4

41 40

PS3

RPS3

PS2

RPS2

PS1

RPS1

HP2

34342

2

1

LP1 HP1

31.5dB control

RHP1

RLP1

OFF

PS4

400Hz

PS3

400Hz

PS2

4KHz

PS1

90Hz

REC

SURR

R5

FIX

VAR

ATT

MUTE

3BAND

C BUS DECODER + LATCHES

2

BASS

MIDDLE

TREBLE

AMP

MIXING

MOVIE/SIM

MUSIC

MOVIE/

I

OFF

L-R

-

+

REAR

SURR

MUSIC

SIM

-

+

R6

-

+

FIX

MIDDLE BASS

TREBLE

AMP

MIXING

EFFECT

CONTROL

LPF

9KHz

-

+

30K

ATT

MUTE

SURR

RM RB

50K

Vref

SUPPLY

100K

31.5dB control

891218

2.2µF

BASSO-R VAR-R

79dB CONTROL

BASS-RO

BASS-RI

100nF 100nF MIDDLE-RO

18nF 22nF

MIDDLE-RI

17 16 13

5.6nF

TREBLE-R

REARIN

2.2µF REAROUT

45

1.2nF

LP

22µF

CREF

AGND

S

V

39 20 38 44

MIX

LPVC

1µF100nF

MIX-IN

3234

5.6K

2.7K

VAR

REC

3BAND

REAR

SURR

OFF

ON

VOICE

+LPF

-

4/23

50K

L-IN3

50K

28

L-IN4

0.47µF

31

30

29

L-IN2

L-IN1

0.47µF

50K

33

35

R-IN2

R-IN1

0.47µF

37

36

R-IN4

R-IN3

0.47µF

50K

THE SWITCHES POSITION MATCHES THE RESET CONDITION

Figure 7. Block Diagram (TDA7431)

R

L

NBLO

NB2

NB1

NBLIN

NB-LA NB-LB

2.2µF

VAR-L

BASSO-L

30K

RECOUT-

32

79dB CONTROL

L-OUT

30

ATT

SPKR

79dB CONTROL

-

+

VAR

ATT

REC

MUTE

FIX

SCL

SDA

272628

DIG GND

ADDR

25

TDA7430 - TDA7431

RECOUT-

R-OUT

29

31

30K

MUTE

D95AU222C

NBRO

40391213162293638

NB3

NBRIN

VAR-R

2.2µF

BASSO-R

79dB CONTROL

NB-RA NB-RB

NB4

ATT

SPKR

MUTE

79dB CONTROL

-

+

FIX

VAR

ATT

REC

5.6K

2.7K

100nF

22nF

18nF

5.6nF

22nF

4.7nF

100nF

5.6nF 680nF

FIX

BASS-LO

14 11 10 34 33

RB

BASS-LI

MIDDLE-LO

RM

MIDDLE-LI

19 18 15

23

TREBLE-L

PS4

RPS4

PS3

RPS3

PS2

RPS2

4321

PS1

RPS1

HP2

8

7

6

LP1 HP1

31.5dB control 35

L-in

0.47µF

RHP1

RLP1

50K

SURR

OFF

PS4

400Hz

PS3

400Hz

PS2

4KHz

PS1

90Hz

R5

3BAND

REAR

BASS

MIDDLE

TREBLE

SURR

AMP

MIXING

MOVIE/SIM

MUSIC

OFF

MUSIC

MOVIE/

SIM

L-R

-

+

R6

-

+

FIX

C BUS DECODER + LATCHES

2

I

MIDDLE BASS

TREBLE

SURR

AMP

MIXING

EFFECT

CONTROL

LPF

9KHz

-

+

3BAND

OFF

VOICE

BASS-RO

REAR

SURR

RM RB

21 20 17

Vref

SUPPLY

42 24 415

ON

100K

+LPF

control

31.5dB

50K

37

R-in

0.47µF

TREBLE-R

VOUTREF

CREF

AGND

S

V

LP

MIX

LPVC

5.6K

BASS-RI

100nF 100nF MIDDLE-RO

2.7K

18nF 22nF

MIDDLE-RI

5.6nF

22µF

1.2nF

MIX-IN

1µF100nF

THE SWITCHES POSITION MATCHES THE RESET CONDITION

5/23

TDA7430 - TDA7431

Table 5. Electrical Characteristcs (refer to the te st circu it T

= 600Ω, all controls flat (G = 0dB), Effect CTRL = -6dB, MODE = OFF; f = 1KHz unless otherwise

R

G

= 25°C, VS = 9V, RL = 10KΩ, Vin = 1Vrms;

amb

specified).

Symbol Parameter Test Condition Min. Typ. Ma x. Unit

SUPPLY

V

SVR Ripple Rejection L

INPUT STAGE

R

V

C

RANGE

A

VMIN

A

VMAX

A

STEP

V

A

Supply Voltage 7 9 10.2 V

S

I

Supply Current 10 18 26 mA

S

/ R

CH

Input Resistance 35 50 65 KΩ

IN

Clipping Level THD = 0.3% 2 2.5 V

CL

, Mode = OFF 60 80 dB

CH out

Control Range 31.5 dB Min. Attenuation -1 0 1 dB Max. Attenuation 31 31.5 32 dB Step Resolution 0.5 1 dB DC Steps adjacent att. step -3 0 3 mV

DC

Voice Canceler Output 1 LIN = RIN, RIN = ON,

VO1

567dB

Vmix = 0V FIX, 0dB attenuation

rms

A

R R

Voice Canceler Output 2 LIN = R

VO2

Voice Canceler Output 3 LIN = RIN, Vmix = 0V FIX,

VO3

Low Pass Filter Resistance 22.4 32 41.6 KΩ

LPV

Input Impedance 70 100 130 KΩ

MIX

BASS CONTROL

Control Range Max. Boost/cut ±11.5 ±14.0 ±16.0 dB

b

Step Resolution 1 2 3 dB Internal Feedback Resistance 32 44 56 KΩ

B

G

STEP

R

MIDDLE CONTROL

Control Range Max. Boost/cut ±11.5 ±14.0 ±16.0 dB

m

Step Resolution 1 2 3 dB Internal Feedback Resistance 17.5 25 32.5 KΩ

M

G

STEP

R

TREBLE CONTROL

G

Control Range Max. Boost/cut ±13.0 ±14.0 ±15.0 dB

t

T

STEP

Step Resolution 1 2 3 dB

= 0V,

IN

Vmix = 1V

FIX, 0dB attenuation

rms

0dB attenuation

-1 0 1 dB

567dB

6/23

TDA7430 - TDA7431

Table 5. Electrical Characteristcs (continued)

Symbol Parameter Test Condition Min. Typ. Ma x. Unit

EFFECT CONTROL

C

RANGE

S

STEP

Control Range ±13.0 6 dB Step Resolution 0.5 1 1.5 dB

SURROUND SOUND MATRIX

TEST CONDITION (Phase Resistor Selection D0=0, D1=1, D2=0. D3=1, D4=0, D5=1, D6=0, D7=1

G

D

G

D

GMOV

G

D

L

MON1

OFF

GOFF

MOV

MUS

GMUS

In-phase Gain (OFF) Mode OFF, Input signal of 1kHz,

LR In-phase Gain Difference (OFF)

1.4 V

, Rin → R

p-p

Mode OFF, Input signal of 1kHz,

1.4 V

, Rin → R

p-p

out , Lin

→ L

out

In-phase Gain (Movie) Movie mode, Effect Ctrl = -6dB

p-p

out , Lin

) - (Lin → L

out

,

→ L

out

p-p

)

LR In-phase Gain Difference (Movie)

1kHz, 1.4 V

→ R

R

in

Movie mode, Effect Ctrl = -6dB Input signal of 1kHz, 1.4 V (Rin → R

In-phase Gain (Music) Music mode, Effect Ctrl = -6dB

LR In-phase Gain Difference (Music)

Input signal of 1kHz, 1.4 V (Rin → R

) , (Lin → L

out

Music mode, Effect Ctrl = -6dB Input signal of 1kHz, 1.4 V (Rin → R

) , (Lin → L

out

p-p

)

p-p

)

Simulated L Output 1 Simulated Mode, Effect Ctrl = -6dB

-1 0 1 dB

8dB

0dB

7dB

0dB

4.5 dB

Input signal of 250Hz,

L

MON2

1.4 V

, Rin and L

p-p

Simulated L Output 2 Simulated Mode, Effect Ctrl = -6dB

→ L

in

out

–4.0 dB

Input signal of 1kHz,

L

MON3

1.4 V

, Rin and L

p-p

Simulated L Output 3 Simulated Mode, Effect Ctrl = -6dB

→ L

in

out

7.0 dB

Input signal of 3.6kHz,

1.4 V

, Rin and L

p-p

→ L

in

out

R

MON1

MON2

MON3

LP1

HPI

LPF

Simulated R Output 1 Simulated Mode, Effect Ctrl = -6dB

– 4.5 dB

Input signal of 250Hz,

1.4 V

, Rin and L

p-p

Simulated R Output 2 Simulated Mode, Effect Ctrl = -6dB

→ R

in

out

3.8 dB

Input signal of 1kHz,

1.4 V

, Rin and L

p-p

Simulated R Output 3 Simulated Mode, Effect Ctrl = -6dB

→ R

in

out

– 20 dB

Input signal of 3.6kHz,

1.4 V

, Rin and L

p-p

→ R

in

out

Low Pass Filter Resistance 7 10 13 KΩ High Pass Filter Resistance 42 60 78 KΩ LP Pin Impedance 7 10 13 KΩ

7/23