SGS Thomson Microelectronics TDA7343D, TDA7343 Datasheet



DIGITALLY CONTROLLED AUDIO PROCESSOR

INPUTMULTIPLEXER

- TWOSTEREOANDONEMONO INPUTS

- SELECTABLEINPUT GAIN FOR OPTIMAL ADAPTATIONTO DIFFERENT SOURCES

FULLY PROGRAMMABLE LOUDNESS FUNCTION

VOLUME CONTROL IN 0.3dB STEPS INCLUDING GAINUP TO20dB

ZERO CROSSING MUTE AND DIRECT MUTE

SOFT MUTE CONTROLLED BY SOFTWARE OR HARDWARE PIN

BASS AND TREBLE CONTROL FOURSPEAKERATTENUATORS

- FOURINDEPENDENT SPEAKERS CONTROLIN 1.25dBSTEPSFOR BALANCEAND FADER FACILITIES

- INDEPENDENTMUTE FUNCTION

ALL FUNCTIONS PROGRAMMABLE VIA SE-

2

RIAL I

DESCRIPTION

The TDA7343 is an upgrade of the TDA7313 audioprocessor.

Thanks to the used BIPOLAR/CMOStechnology, very low distortion, low noise and DC-stepping are obtained.

Due to a highly linear signal processing, using

CBUS

TDA7343

DIP28 SO28

ORDERING NUMBER: TDA7343 (DIP28)

TDA7343D (SO28)

CMOS-switching techniques instead of standard bipolar multipliers, very low distortion and very low noise are obtained Several new features like softmute, zero-crossing mute and pause detector are implemented. The Soft Mute function can be activated in two ways:

1 Via serial bus(bit D0, Mute Byte) 2 Directly on pin 22 through an I/O line of the

microcontroller

Very low DC stepping is obtained by use of a BICMOStechnology.

November 1999

1/14

TDA7343

BLOCK DIAGRAM

BUSSERIAL BUS DECODER + LATCHES

R2

4.7K

C8 2.2µF

C16

C15

C14

C10

2.7nF

TREBLE(L)

100nF

BOUT(L) BIN(L) SM

100nF

LOUD(L)

OUT(L) IN(L)

4

19 18

22

12

17 16

ATT

SPKR

RB

26

OUT

LEFT FRONT

MUTE

SPKR

TREBLE

BASS

VOL

LOUD+

ZERO

CROSS +

ATT

MUTE

24

OUT

LEFT REAR

MUTE

28

SCL

27

SOFT

SDA

MUTE

ATT

SPKR

25

OUT

RIGHT FRONT

ZERO

MUTE

TREBLE

BASS

VOL

LOUD+

MUTE

CROSS +

ATT

SPKR

OUT

RIGHT REAR

23

D93AU062B

MUTE

C13

TREBLE(R)

C12

RB

BOUT(R) BIN(R)

21 20 5

C11

15

CSM

LOUD(R)

C9 47nF

68

7

OUT(R)CREF IN(R)

2.7nF

100nF

CSM

C7 2.2µF

R1

4.7K

2/14

INPUT

+ GAIN

SELECTOR

L1

14

L1

x 2

1µF

C1

L2

13

L2

LEFT

INPUTS

L3

11

C3

C2

R3

R1

R2

10R1

9

R2

x 2

1µF

C4

RIGHT

INPUTS

SUPPLY

2

S

V

C5

10µF

C6

31

AGND

ABSOLUTE MAXIMUM RATINGS

Symbol Parameter Value Unit

V

S

T

amb

T

stg

Operating Supply Voltage 10.5 V Operating Ambient Temperature -40 to 85 °C Storage Temperature Range -55 to 150 °C

PIN CONNECTION

TDA7343

TREBLE

CREF

V

GND

IN(R)

OUT(R)

LOUD R

IN R2 IN R1

AM MONO

LOUD L

IN L2 IN L1

1 2

S

3 4

L

5

R OUT LR

6 7 8 9 10 11 12 13 14

D94AU061B

28 27 26 25 24

22 21 20 19 18 17 16 15

SCL SDA OUT LF OUT RF

OUT RR23 SM BOUT(R) BIN(R) BOUT(L) BIN(L) OUT(L) IN(L) CSM

BUS

INPUTS

BASS

THERMAL DATA

Symbol Parameter DIP28 SO28 Unit

R

th j-amb

Thermal ResistanceJunction-pins 85 65 °C/W

QUICK REFERENCE DATA

Symbol Parameter Min. Typ. Max. Unit

V

S

V

CL

THD Total Harmonic DistortionV = 1Vrms f = 1KHz 0.01 0.08 %

S/N Signal to Noise Ratio 106 dB

S

C

Supply Voltage 6 9 10.2 V Max. input signal handling 2.1 2.6 Vrms

Channel Separation f = 1KHz 100 dB Volume Control 0.3dB step -59.7 20 dB Treble Control 2dB step -14 +14 dB Bass Control 2dB step -10 +18 dB Fader and Balance Control 1.25dBstep -38.75 0 dB Input Gain 3.75dB step 0 11.25 dB Mute Attenuation 100 dB

3/14

TDA7343

ELECTRICALCHARACTERISTICS (VS= 9V; RL= 10KΩ;Rg=50Ω;T

=25°C; all controlsflat

amb

(G -0dB); f = 1KHz. Referto the testcircuit, unless otherwise specified.)

Symbol Parameter Test Condition Min. Typ. Max. Unit

INPUTSELECTOR

G

R

V

S

R

I MIN

I MAX

step

e

V

I

CL

I

L

N

DC

Input Resistance 70 100 130 KΩ Clipping Level d ≤ 0.3% 2.1 2.6 V Input Separation 80 100 dB Output Load Resistance 2 KΩ Minimum InputGain -0.75 0 0.75 dB Maximum Input Gain 10.25 11.25 12.25 dB Step Resolution 2.75 3.75 4.75 dB Input Noise 20Hz to 20 KHz unweighted 2.3 DC Steps Adiacent Gain Steps 1.5 10 mV

to G

G

IMIN

IMAX

3mV

VOLUMECONTROL

R

I

G

MAX

A

MAX

A

STEPC

A

STEPF

E

A

E

t

V

DC

Input Resistance 35 50 K Maximum Gain 18.75 20 21.25 dB Maximum Attenuation 57.7 59.7 62.7 dB Step Resolution Coarse

0.5 1.25 2.0 dB

Attenuation StepResolution FineAttenuation 0.11 0.31 0.51 dB Attenuation Set Error G = 20 to -20dB -1.25 0 1.25 dB

G = -20 to -58dB -3 2 dB Tracking Error 2dB DC Steps Adiacent Attenuation Steps -3 0 3 mV

From 0dB to A

MAX

0.5 5 mV

LOUDNESS CONTROL

R

I

A

MAX

A

step

Internal Resistor Loud = ON 35 50 65 K Maximum Attenuation 17.5 18.75 20.0 dB Step Resolution 0.5 1.25 2.0 dB

ZEROCROSSINGMUTE

A

V

TH

MUTE

V

DC

Zero Crossing Threshold (note 1)

WIN = 11 20 mV

WIN = 10 40 mV

WIN = 01 80 mV

WIN = 00 160 mV Mute Attenuation 80 100 dB DC Step 0dB to Mute 0 3 mV

SOFTMUTE

A

T

V

R V V

MUTE

DON

DOFF

THSM

INT SMH SML

Mute Attenuation 60 dB ON Delay Time C

=22nF;0 to-20dB; I =I

CSM

=22nF;0 to-20dB; I =I

C

CSM

MAX MIN

0.7 1 1.7 ms 20 35 55 ms

OFF Delay Time VCSM = 0V;I = IMAX 25 50 75 µA

CSM =0V; I= IMIN 1 µA

V Soft MuteThreshold 1.5 2.5 3.5 V Pullup Resistor (pin 22) (note 2) 35 50 65 K (pin 22) Level High Soft Mute Active 3.5 V (pin 22) Level Low 1V

RMS

V

µ

Ω

4/14

TDA7343

ELECTRICALCHARACTERISTICS (continued)

Symbol Parameter Test Condition Min. Typ. Max. Unit

BASS CONTROL

B

BOOST

B

CUT

A

step

R

g

TREBLECONTROL

C

RANGE

A

step

SPEAKERATTENUATORS

C

RANGE

A

step

A

MUTE

E

A

V

DC

AUDIO OUTPUT

V

clip

R

L

R

O

V

DC

GENERAL

V

CC

I

CC

PSRR Power Supply Rejection Ratio f = 1KHz 60 80 dB

e

NO

E

t

S/N Signal to Noise Ratio All Gains = 0dB; V

S

C

d Distortion V

BUS INPUTS

V

IL

V

lN

I

lN

V

O

Note 1: WIN represents the MUTE programming bit pair D6,D5for the zero crossing window threshold Note 2: Internalpullup resistor to Vs/2; ”LOW” = softmuteactive

Max Bass Boost 15 18 20 dB Max Bass Cut -8.5 -10 -11.5 dB Step Resolution 1 2 3 dB Internal Feedback Resistance 45 65 85 KΩ

Control Range

13

±

14

±

15 dB

±

Step Resolution 1 2 3 dB

Control Range 35 37.5 40 dB Step Resolution 0.5 1.25 2.0 dB Output Mute Attenuation Data Word = XXX11111 80 100 dB Attenuation Set Error 1.25 dB DC Steps Adjacent Attenuation Steps 0 3 mV

Clipping Level d = 0.3% 2.1 2.6 Vrms Output Load Resistance 2 KΩ Output Impedance 30 100 Ω DC Voltage Level 3.5 3.8 4.1 V

Supply Voltage 6 9 10.2 V Supply Current 5 10 15 mA

B = 20 to 20kHz ”A” weighted 65 dB Output Noise OutputMuted(B= 20to20kHzflat) 2.5 µV

All Gains0dB(B= 20to20kHzflat) 5 15 µV Total Tracking Error AV = 0 to -20dB 0 1 dB

= -20to -60dB 0 2 dB

A

V

O

=1V

rms

106 dB

Channel Separation 80 100 dB

= 1V 0.01 0.08 %

in

Input Low Voltage 1V Input High Voltage 3 V Input Current VIN = 0.4V -5 5 µA Output Voltage SDA

IO= 1.6mA 0.4 0.8 V Acknowledge

5/14