SGS Thomson Microelectronics TDA7313D, TDA7313 Datasheet



DIGITAL CONTROLLED STEREO AUDIO PROCESSOR

INPUTMULTIPLEXER:

- 3 STEREO INPUTS

- SELECTABLEINPUT GAIN FOR OPTIMAL
ADAPTIONTO DIFFERENTSOURCES

INPUT AND OUTPUT FOR EXTERNAL
EQUALIZER OR NOISE REDUCTION SYS­TEM

LOUDNESSFUNCTION
VOLUMECONTROL IN 1.25dBSTEPS
TREBLEAND BASS CONTROL
FOURSPEAKERATTENUATORS:

- 4 INDEPENDENTSPEAKERSCONTROL

IN 1.25dB STEPS FOR BALANCEAND

FADERFACILITIES

- INDEPENDENTMUTE FUNCTION

ALL FUNCTIONS PROGRAMMABLE VIA SE-

2

RIAL I

DESCRIPTION

The TDA7313 is a volum e, tone (bass and treble)
balance (Left/Ri ght) and fader (front/rear) processor
for quality audio applications in car radio and Hi-Fi

C BUS

TDA7313

WITH LOUDNESS

DIP28 SO28

ORDERING NUMBERS:

TDA7313 TDA7313D

systems.
Selectable input gainand externalloudness function

are provided. Contr ol is acc omplis hed by serial I
busmi c r opr oc es sorinterface.
TheACsignalsettingisobtainedbyresistornetwo rks
andswitchescombinedwithoperationalamplifiers.

Thanks to the used BIP OLAR / C MOS Tec nol ogy ,
LowDistortion, LowNoiseandLow DC steppingare
obtained.

2

C

PIN CONNECTION (Topview)

November 1999

1/14

TDA7313

TEST CIRCUIT

THERMAL DATA

Symbol Description SO28 DIP28 Unit

R

thj-pins

Thermal Resistance Junction-pins max 85 65 °C/W

ABSOLUTE MAXIMUM RATINGS

Symbol Parameter Value Unit

V

T

amb

T

stg

Operating Supply Voltage 10.2 V

S

Operating Ambient Temperature -40 to 85
Storage Temperature Range -55 to +150 °C

QUICK REFERENCE DATA

Symbol Parameter Min. Typ. Max. Unit

V

V

CL

THD Total Harmonic DistortionV = 1Vrms f = 1KHz 0.01 0.1 %

S/N Signal to Noise Ratio 106 dB

S

Supply Voltage 6 9 10 V

S

Max. input signal handling 2 Vrms

Channel Separation f = 1KHz 103 dB

C

Volume Control 1.25dB step -78.75 0 dB
Bass and TrebleControl 2db step -14 +14 dB
Fader and Balance Control 1.25dBstep -38.75 0 dB
Input Gain 3.75dB step 0 11.25 dB
Mute Attenuation 100 dB

C

°

2/14

BLOCK DIAGRAM

TDA7313

BUS

C17

5.6K R2

C11

2.7nF

100nF

100nF

100nF

TREBLE(L)

C15

BIN(L)

BOUT(L)

C14

LOUD(L)

SPKR

4

18

19

12

ATT

FRONT

OUT LEFT

25

RB

MUTE

ATT

SPKR

TREBLE

BASS

VOL

REAR

OUT LEFT

23

+ LOUD

MUTE

SCL

SDA

282726

SERIAL BUS DECODER + LATCHES

DIGGND

SPKR

RIGHT
OUT

24

ATT

BASS TREBLE

VOL

+ LOUD

FRONT

MUTE

ATT

SPKR

RIGHT

REAR

OUT

22

RB

MUTE

D94AU180

TREBLE(R)

5

BOUT(R) BIN(R)

21 20

LOUD(R)

8

C13

100nF

C12

100nF

C16

2.7nF

5.6K R1

C10

100nF

C9 2.2µF

17 16

OUT(L) IN(L)

INPUT

+ GAIN

SELECTOR

3x

2.2µF

L1 15L1L2 14L2L3 13

C1

C2

LEFT

INPUTS

C3

L3

R3 9R3R2 10R2R1 11

C4

C5

RIGHT

INPUTS

C6

R1

3x

2.2µF

76

OUT(R) IN(R)

SUPPLY

AGND CREF

231

V

C8 2.2µF

22µFC7

CC

3/14

TDA7313

ELECTRICALCHARACTERISTICS (refer tothe test circuit T

R

= 600Ω, all controlsflat (G = 0), f = 1KHz unless otherwise specified)

G

=25°C,VS= 9V,RL=10KΩ,

amb

Symbol Parameter Test Condition Min. Typ. Max. Unit

SUPPLY

V

S

I

S

SVR Ripple Rejection 60 80 dB

Supply Voltage 6 9 10 V
Supply Current 8 11 mA

INPUT SELECTORS

G
G
G

V

R

II

V

CL

S

IN

R

L

INmin

INmax

STEP

e

IN

DC

Input Resistance Input 1, 2, 3 35 50 70 K
Clipping Level 2 2.5 Vrms
Input Separation (2) 80 100 dB
Output Load resistance pin 7, 17 2 K
Min. Input Gain -1 0 1 dB
Max. Input Gain 11.25 dB
Step Resolution 3.75 dB
Input Noise G = 11.25dB 2
DC Steps adjacent gain steps 4 20 mV

G = 18.75 to Mute 4 mV

VOLUMECONTROL

R

IV

C

RANGE

A

VMIN

A

VMAX

A

STEP

E

A

E

T

V

DC

Input Resistance 20 33 50 kΩ
Control Range 70 75 80 dB
Min. Attenuation -1 0 1 dB
Max. Attenuation 70 75 80 dB
Step Resolution 0.5 1.25 1.75 dB
Attenuation Set Error Av = 0 to -20dB

Av = -20 to -60dB

-1.25

-3

0 1.25

2
Tracking Error 2dB
DC Steps adjacent attenuation steps

From 0dB to Av max

0

0.5

3

7.5

SPEAKERATTENUATORS

µ

dB
dB

mV
mV

Ω

Ω

V

C
S

A

range
STEP

E

MUTE

V

DC

A

Control Range 35 37.5 40 dB
Step Resolution 0.5 1.25 1.75 dB
Attenuation set error 1.5 dB
Output Mute Attenuation 80 100 dB
DC Steps adjacent att. steps

from 0 to mute

0
1

BASS CONTROL(1)

Gb Control Range Max. Boost/cut +12 +14 +16 dB

B

STEP

R

B

Step Resolution 1 2 3 dB
Internal Feedback Resistance 34 44 58 KΩ

TREBLECONTROL(1)

Gt Control Range Max. Boost/cut +13 +14 +15 dB

Step Resolution 1 2 3 dB

4/14

T

STEP

10

3

mV
mV

TDA7313

ELECTRICALCHARACTERISTICS (continued)

Symbol Parameter Test Condition Min. Typ. Max. Unit

AUDIO OUTPUTS

V

OCL

R

L

C

L

R

OUT

V

OUT

Clipping Level d = 0.3% 2 2.5 Vrms
Output Load Resistance 2 KΩ
Output Load Capacitance 10 nF
Output resistance 30 75 120

Ω

DC Voltage Level 4.2 4.5 4.8 V

GENERAL

e

NO

S/N Signal to Noise Ratio all gains = 0dB; V

d Distortion A

Sc Channel Separation left/right 80 103 dB

Output Noise BW = 20-20KHz, flat

output muted
all gains = 0dB

A curve all gains = 0dB 3 µV

O

=0,VIN= 1Vrms

V

A

= -20dB VIN= 1Vrms

Total Tracking error A

V

= 0 to -20dB

V

V

= 0.3Vrms

IN

-20 to -60 dB

2.5
515

µV
µ

= 1Vrms 106 dB

0.01

0.09

0.04

0
0

0.1

0.3

1
2

%
%
%

dB
dB

V

BUS INPUTS

V

IL

V

IH

I

IN

V

O

Notes:

(1) Bass and Trebleresponse seeattached diagram(fig.16). The center frequencyand quality ofthe resonance behaviour can be choosen by

the external circuitry. A standard first order bass response can be realized by a standard feedback network

(2) The selected input is groundedthru the 2.2µF capacitor.

Input Low Voltage 1V
Input High Voltage 3 V
Input Current -5 +5
Output Voltage SDA

IO= 1.6mA 0.4 V

A

µ

Acknowledge

Figure 1: Loudnessvs. VolumeAttenuation

Figure2: Loudnessvs. Frequency(C

100nF) vs. Volume Attenuation

LOUD

=

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TDA7313

Figure 3: Loudnessvs. ExternalCapacitors

Figure5: Signal to Noise Ratio vs. Volume

Setting

Figure4: Noisevs.Volume/GainSettings

Figure6: Distortion& Noisevs. Frequency

Figure 7: Distortion& Noise vs. Frequency

6/14

Figure8: Distortionvs. Load Resistance

TDA7313

Figure 9: Channel Separation(L → R) vs.

Frequency

Figure 11: SupplyVoltageRejection vs.

Frequency

Figure10: InputSeparation(L1→L2, L3, L4) vs.

Frequency

Figure12: OutputClipping Level vs. Supply

Voltage

Figure 13: QuiescentCurrent vs. SupplyVoltage

Figure14: SupplyCurrent vs. Temperature

7/14

TDA7313

Figure 15: BassResistancevs. Temperature

I2C BUS INTERFACE

Data transmission from microprocessor to the
TDA7313 and viceversa takes place thru the 2
wires I

2

C BUS interface, consisting of the two
lines SDA and SCL (pull-up resistors to positive
supply voltage must be connected).

Data Validity

As shown in fig. 17, the data on the SDA line
must be stable during thehigh period of the clock.
The HIGH and LOW state of the data line can
only change when the clock signal on the SCL
line is LOW.

Start and Stop Conditions

As shown in fig.18 a start condition is a HIGH to
LOW transition of the SDA line while SCL is
HIGH. The stop condition is a LOW to HIGH tran­sition of the SDA line while SCL is HIGH.

Byte Format

Every byte transferred on the SDA line must con­tain 8 bits. Each byte must be followed by an ac­knowledgebit. The MSB is transferredfirst.

Figure16: TypicalTone Response (with theext.

components indicated in the test
circuit)

Acknowledge

The master(µP)putsa resistive HIGH level on the
SDA line during the acknowledgeclock pulse (see
fig. 19). The peripheral (audioprocessor) that ac­knowledges has to pull-down (LOW) the SDA line
during the acknowledge clock pulse, so that the
SDAlineisstableLOWduringthis clockpulse.

The audioprocessor which has been addressed
has to generate an acknowledge after the recep­tion of each byte, otherwise the SDAline remains
at the HIGH level during the ninth clock pulse
time. In this case the master transmitter can gen­erate the STOP information in order to abort the
transfer.

Transmissionwithout Acknowledge

Avoiding to detect the acknowledge of the audio­processor, the µP can use a simplier transmis­sion: simply it waits one clock without checking
the slave acknowledging, and sends the new
data.

This approach of course is less protected from
misworkingand decreasesthe noise immunity.

Figure 17: Data Validityon the I

8/14

2

CBUS

Figure 18: TimingDiagramof I2CBUS

2

Figure 19: Acknowledgeon the I

CBUS

TDA7313

SOFTWARESPECIFICATION
Interface Protocol

The interface protocol comprises:

A start condition (s)
A chip address byte, containing the TDA7313

TDA7313 ADDRESS

MSB first byte LSB MSB LSB MSB LSB

S10001000

ACK = Acknowledge
S = Start
P = Stop

MAX CLOCK SPEED 100kbits/s

ACK DATA ACK DATA ACK P

Data Transferred (N-bytes + Acknowledge)

address(the 8th bit ofthe bytemust be 0). The
TDA7313must always acknowledgeat theend
of each transmittedbyte.

A sequenceof data (N-bytes+ acknowledge)
A stopcondition (P)

SOFTWARESPECIFICATION

Chip address

1

MSB

0001000

LSB

DATA BYTES

MSB LSB FUNCTION

0
1
1
1
1
0
0
0

Ax = 1.25dB steps; Bx= 10dB steps; Cx= 2dB steps; Gx = 3.75dB steps

0
1
1
0
0
1
1
1

B2

0
1
0
1
0
1
1

B1
B1
B1
B1
B1
G1

0
1

B0
B0
B0
B0

B0
G0
C3
C3

A2
A2
A2
A2
A2

S2
C2
C2

A1
A1
A1
A1
A1
S1
C1
C1

A0
A0
A0
A0
A0

S0
C0
C0

Volume control
Speaker ATT LR
Speaker ATT RR
Speaker ATT LF
Speaker ATT RF
Audio switch
Bass control
Treble control

9/14

TDA7313

SOFTWARESPECIFICATION (continued)

DATA BYTES (detailed description)

Volume

MSB LSB FUNCTION

0 0 B2 B1 B0 A2 A1 A0 Volume 1.25dB steps

0
0
0
0
1
1
1
1

0 0 B2 B1 B0 A2 A1 A0 Volume 10dB steps

0
0
0
0
1
1
1
1

0
0
1
1
0
0
1
1

0
1
0
1
0
1
0
1

0
0
1
1
0
0
1
1

For example a volume of -45dBis given by:
00100100

0
1
0
1
0
1
0
1

0

-1.25

-2.5

-3.75

-5

-6.25

-7.5

-8.75

0

-10

-20

-30

-40

-50

-60

-70

Speaker Attenuators

MSB LSB FUNCTION

1
1
1
1

0
0
1
1

0
1
0
1

B1
B1
B1
B1

0
0
1
1

11111 Mute

B0
B0
B0
B0

0
1
0
1

A2
A2
A2
A2

0
0
0
0
1
1
1
1

A1
A1
A1
A1

0
0
1
1
0
0
1
1

A0
A0
A0
A0

0
1
0
1
0
1
0
1

Speaker LF
Speaker RF
Speaker LR
Speaker RR

For example attenuationof 25dBon speakerRF is given by:
10110100

0

-1.25

-2.5

-3.75

-5

-6.25

-7.5

-8.75
0

-10

-20

-30

10/14

Audio Switch

MSB LSB FUNCTION

0 1 0 G1 G0 S2 S1 S0 Audio Switch

0
0
1

0
1

0
0
1
1

0
1
0
1

1

0
1
0
1

Stereo 1
Stereo 2
Stereo 3
Stereo 4 (*)
LOUDNESS ON
LOUDNESS OFF

+11.25dB
+7.5dB
+3.75dB
0dB

For example to select the stereo 2 input with a gain of +7.5dBLOUDNESSON the 8bitstring is:
01001001
(*) Stereo 4 is connectedinternally,but not availableon pins.

Bass andTreble

TDA7313

0
0

1
1

1
1

0
1

C3
C3

C2
C2

0
0
0
0
0
0
0
0

1
1
1
1
1
1
1
1

0
0
0
0
1
1
1
1

1
1
1
1
0
0
0
0

C3 = Sign
For example Bass at -10dB is obtainedby the following8 bit string:
01100010

C1
C1

0
0
1
1
0
0
1
1

1
1
0
0
1
1
0
0

C0
C0

0
1
0
1
0
1
0
1

1
0
1
0
1
0
1
0

Bass

Treble

-14

-12

-10

-8

-6

-4

-2
0

0
2
4
6
8

10
12
14

2

Purchase of I
Rights to use these components in an I

C Components of STMicroelectronics, conveys a license under the Philips I2C Patent

2

C system, provided that the system conforms to the I2C

Standard Specificationsas definedby Philips.

11/14

TDA7313

DIM.

MIN. TYP. MAX. MIN. TYP. MAX.

A 2.65 0.104

a1 0.1 0.3 0.004 0.012

b 0.35 0.49 0.014 0.019

b1 0.23 0.32 0.009 0.013

C 0.5 0.020

c1 45° (typ.)

D 17.7 18.1 0.697 0.713
E 10 10.65 0.394 0.419
e 1.27 0.050

e3 16.51 0.65

F 7.4 7.6 0.291 0.299
L 0.4 1.27 0.016 0.050
S8°(max.)

mm inch

OUTLINE AND

MECHANICAL DATA

SO28

12/14

TDA7313

DIM.

MIN. TYP. MAX. MIN. TYP. MAX.

a1 0.63 0.025

b 0.45 0.018

b1 0.23 0.31 0.009

b2 1.27 0.050

D 37.34 1.470

E 15.2 16.68 0.598 0.657

e 2.54 0.100

e3 33.02 1.300

F 14.1 0.555

I 4.445 0.175

L 3.3 0.130

mm inch

0.012

OUTLINE AND

MECHANICAL DATA

DIP28

13/14

TDA7313

Information furnished is believed to be accurate and reliable.However, STMicroelectronics assumes no responsibility for the consequences
of use of such information nor for any infringement of patents or other rights of third parties which may result from its use. No license is
granted by implication or otherwise under any patent or patent rights of STMicroelectronics. Specification mentioned in this publication are
subject to change without notice. This publication supersedes and replaces all information previously supplied. STMicroelectronicsproducts
are not authorized for use as critical components in life support devices or systems without express written approval of STMicroelectronics.

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