2W+2W OUTPUT POWERRL = 8Ω @THD = 10% VCC = 14VST-BY AND MUTE FUNCTIONSLOW TURN-ON TURN-OFF POP NOISELINEAR VOLUME CONTROL DC COUPLEDWITH POWER OP. AMP.NO BOUCHEROT CELLNO ST-BY RC INPUT NETWORKSINGLE SUPPLY RANGING UP TO 15VSHORT CIRCUIT PROTECTIONTHERMAL OVERLOAD PROTECTIONINTERNALLY FIXED GAIN SOFT CLIPPINGVARIABLE OUTPUT AFTER VOLUME CON-TROL CIRCUITPOWERDIP (14+3+3) PACKAGE

DESCRIPTIONThe TDA7496L is a stereo 2W+2W class ABpower amplifier assembled in the @ Powerdip

14+3+3 package, specially designed for highquality sound, TV and Monitor applications. Features of the TDA7496L include linear volumecontrol, Stand-by and mute functions.

September 2003

®

VOLUME

OP AMP

+

-

MUTE/STBYPROTECTIONS

9

470nF

INR

30K

VOLUME

OP AMP

+

-30K

1000µF

1000µF

1µF

10K

4

470nF

INL

7

14

11

12

17

6 5

300K100nF

VOLUME VAROUT_L

OUTR

STBY

MUTE

OUTL

1,2,3,13,18,19,20

GND

470µF

SVR 10

D97AU596A

VSVAROUT_R

15,16

+5V

S1 ST-BY+5V

S2 MUTE+5V

S_GND

60K

BLOCK DIAGRAM

Powerdip (14+3+3)

ORDERING NUMBER: TDA7496L

TDA7496L

2W+2W AMPLIFIER WITH DC VOLUME CONTROL

1/10

GND

GND

GND

INL

VAROUT_L

VAROUT_R

VOLUME

N.C.

INR

1

3

2

4

5

6

7

8

9 MUTE

GND

OUTR

VS

VS

OUTL

GND

GND

GND20

19

18

17

16

14

15

13

12

D97AU597A

SVR 10 STBY11

PIN CONNECTION

THERMAL DATA

Symbol Parameter Value Unit

Rth j-pins Thermal Resistance Junction-pins max. 15 °C/W

Rth j-amb (*) Thermal Resistance Junction-ambient max. 50 °C/W

(*) Mounted on PCB with no heatsink

ELECTRICAL CHARACTERISTICS (Refer to the test circuit VS = 14V; RL = 8Ω, Rg = 50Ω, Tamb = 25°C).

Symbol Parameter Test Condition Min. Typ. Max. UnitVS Supply Voltage Range 10 18 V

Iq Total Quiescent Current 25 50 mA

DCVOS Output DC Offset Referred toSVR Potenial

No Input Signal 200 mV

VO Quiescent Output Voltage 7 V

PO Output Power THD = 10%; RL = 8Ω; 1.6 2 W

THD = 1%; RL = 8Ω; 1.3 WTHD Total Harmonic Distortion GV = 30dB; PO = 1W; f = 1KHz; 0.4 %

Ipeak Output Peak Current (internally limited) 0.7 0.9 A

Vin Input Signal 2.8 VrmsGV Closed Loop Gain Vol Ctrl > 4.5V 28.5 30 31.5 dB

GvLine Monitor Out Gain Vol Ctrl > 4.5V; Zload > 30KΩ -1.5 0 1.5 dB

AMin VOL Attenuation at Minimum Volume Vol Ctrl < 0.5V 80 dBBW 0.6 MHz

ABSOLUTE MAXIMUM RATINGS

Symbol Parameter Value Unit

VS DC Supply Voltage 26 V

VIN Maximum Input Voltage 8 Vpp

Ptot Total Power Dissipation (Tcase = 60°C) 6 W

Tamb Ambient Operating Temperature 0 to 70 °C

Tstg, Tj Storage and Junction Temperature -40 to 150 °C

V6 Volume CTRL DC voltage 7 V

0 4 8 12 Area(cm2)30

40

50

60

Rthj-a(˚C/W)

D97AU675

COPPER AREA 35µTHICKNESS

PC BOARD

Rth with "on board" Square Heatsink vs. copperarea.

TDA7496L

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ELECTRICAL CHARACTERISTICS (continued)

Symbol Parameter Test Condition Min. Typ. Max. UniteN Total Output Noise f = 20Hz to 22KHz

Play, max volume500 800 µV

f = 20Hz to 22KHzPlay, max attenuation

100 250 µV

f = 20Hz to 22KHzMute

60 150 µV

SR Slew Rate 5 8 V/µsRi Input Resistance 22.5 30 KΩ

RVar Out Variable Output Resistance 30 100 ΩRload Var Out Variable Output Load 2 KΩ

SVR Supply Voltage Rejection f = 1kHz; max volumeCSVR = 470µF; VRIP = 1Vrms

35 39 dB

f = 1kHz; max attenuationCSVR = 470µF; VRIP =1Vrms

55 65 dB

TM Thermal Muting 150 °CTs Thermal Shut-down 160 °C

MUTE STAND-BY & INPUT SELECTION FUNCTIONSVST ON Stand-by ON Threshold 3.5 VVST OFF Stand-by OFF Threshold 1.5 VVM ON Mute ON Threshold 3.5 VVM OFF Mute OFF Threshold 1.5 VIqST-BY Quiescent Current @ Stand-by 0.6 1 mAAMUTE Mute Attenuation 50 65 dB

IstbyBIAS Stand-by bias current Stand by on VST-BY = 5V VMUTE = 5V

80 µAµA

Play or Mute -20 -5 µA

ImuteBIASMute bias current Mute 1 5 µA

Play 0.2 2 µA

APPLICATION SUGGESTIONSThe recommended values of the external components are those shown on the application circuit of fig-ure 1A. Different values can be used, the following table can help the designer.

COMPONENT SUGGESTIONVALUE PURPOSE LARGER THAN

SUGGESTIONSMALLER THAN

SUGGESTIONR1 300K Volume control

circuitLarger volume regulationtime

Smaller volume regulationtime

R2 10K Mute time constant Larger mute on/off time Smaller mute on/off timeP1 50K Volume control

circuitC1 1000µF Supply voltage

bypassDanger of oscillation

C2 470nF Input DC decoupling Lower low frequency cutoff Higher low frequency cutoffC3 470nF Input DC decoupling Lower low frequency cutoff Higher low frequency cutoffC4 470µF Ripple rejection Better SVR Worse SVRC5 100nF Volume control time

costantLarger volume regulationtime

Smaller volume regulationtime

C6 1000µF Output DCdecoupling

Lower low frequency cutoff Higher low frequency cutoff

C7 1µF Mute time costant Larger mute on/off time Smaller mute on/off timeC8 1000µF Output DC

decouplingLower low frequency cutoff Higher low frequency cutoff

C9 100nF Supply voltagebypass

Danger of oscillation

TDA7496L

3/10

VOLUME

OP AMP

+

-

MUTE/STBYPROTECTIONS

9

C2 470nF

INR

30K

VOLUME

OP AMP

+

-30K

C8 1000µF

C6 1000µF

C71µF

R2 10K

4

C3 470nF

INL

7

14

11

12

17

6 5

R1 300KC5

100nF

VOLUME

OUTR

S1 STBY

S2 MUTE

OUTL

1,2,3,13,18,19,20

C4 470µF

SVR 10

D97AU598A

VSVAROUT_R

15,16

C90.1µF

C11000µF

+VS

PW_GND

VOLP1

50KLOG

+5V

TP1

PW_GND

PW_GND

S_GND

+5V

+5V

VAROUT_L

60K

Figure 1A. Application Circuit.

Figure 1B. PCB and Component Layout of the Fig. 1A (1.25:1 scale)

TDA7496L

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MUTE STAND-BY TRUTH TABLE

MUTE ST-BY OPERATING CONDITION

H H STANDBY

L H STANDBY

H L MUTE

L L PLAY

OFFSTBY MUTE PLAY STBYOFF MUTE

VS (V)

5

ST-BYpin#11 (V)

5

MUTEpin#12 (V)

INPUT(mV)

VOUT(V)

IQ(mA)

D97AU683

VSVRpin#10(V)

2.5V

Turn ON/OFF Sequences (for optimizing the POP performances)A) USING MUTE AND STAND-BY FUNCTIONS

B) USING ONLY THE MUTE FUNCTIONTo simplify the application, the stand-by pin canbe connected directly to Ground.During the ON/OFF transitions is recommend torespect the following conditions.

- At the turn-on, the transition mute - play must bemade when the SVR pin is higher than 2.5V- At the turn-off, the TDA7496L must be broughtto mute from the play condition when the SVR pinis higher than 2.5V.

TDA7496L

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10 11 12 13 14 15 16 17 18

Supply Voltage (V)

16

18

20

22

24

26

28

30

32

34Iq (mA)

Vi=0

Quiescent current vs. Supply Voltage

10 11 12 13 14 15 16 17 18

Supply Voltage (V)

4

4.5

5

5.5

6

6.5

7

7.5

8

8.5

9

9.5

10Vodc (V)

Vi=0

Output DC Voltage vs. Supply Voltage

10 11 12 13 14 15 16 17 18

Supply Voltage (V)

100

120

140

160

180

200

220

240

260

280

300Vodc-Vsvr (V)

Vi=0

Output DC Offset vs. Supply Voltage

10 11 12 13 14 15 16 17 18

Supply Voltage (V)

0

0.5

1

1.5

2

2.5

3

3.5

4Ouput Power (W)

THD=10 %

THD=1 %

Rl=8 OhmF= 1 KHz

Output Power vs. Supply Voltage

0 0.2 0.4 0.6 0.8 1 1.2 1.4 1.6 1.8 2

Output Power (W)

0.01

0.1

1

10Distortion (%)

Rl=8 OhmVs=12V

F=15 KHz

F=1 KHz

Distortion vs. Output Power

0.02 0.2 2 20

Frequency (KHz)

20

21

22

23

24

25

26

27

28

29

30

31

32Closed Loop Gain (dB)

Rl=8 OhmPout=0.5WCin=470nFCout =1000uFCsvr=470 uF

Closed Loop gain vs. Frequency

TDA7496L

6/10

0 0.5 1 1.5 2 2.5 3 3.5 4 4.5 5

Vpin # 11 (V)

01020

-10-20-30-40-50-60-70-80-90

-100-110-120-130-140

Stand-by Attenuation (dB)

Rl=8 Ohm0 dB @ Pout=1W

St-By Attenuation vs. Vpin 11

0 0.4 0.8 1.2 1.6 2 2.4 2.8 3.2 3.6 4 4.4 4.8 5.2

Vpin # 12 (V)

010

20

-10-20-30

-40-50-60-70-80

-90-100-110-120

Mute Attenuation (dB)

Rl=8 Ohm

0 dB @ Pout=1W

Mute Attenuation vs. Vpin 12

+

-

+

-

6K

6K

1K

1K

30K

30K

SVR

20K

20K

VS VS VS

OUT L

OUT R

100µA

D97AU585A

PIN: SVR

PIN DESCRIPTION

TDA7496L

7/10

500µA

30K

VS

INn

SVRD97AU589

6K

PINS: INL, INR

VAROUT-L

D97AU590

VS

PINS: VAROUT-L, VAROUT-R

VOL

D97AU591

VS

10µA

PIN: VOLUME

50µA

200MUTE

D97AU592

10K

VS

PIN: MUTE

GNDD97AU593

VS

PINS: PW-GND, S-GND

OUT

D97AU588

VS

PINS: OUT R, OUT L

10µA

65K

VS

STBY

D97AU594

200

PIN: STBY

TDA7496L

8/10

DIM.mm inch

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

a1 0.51 0.020

B 0.85 1.40 0.033 0.055

b 0.50 0.020

b1 0.38 0.50 0.015 0.020

D 24.80 0.976

E 8.80 0.346

e 2.54 0.100

e3 22.86 0.900

F 7.10 0.280

I 5.10 0.201

L 3.30 0.130

Z 1.27 0.050Powerdip 20

OUTLINE ANDMECHANICAL DATA

TDA7496L

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

The ST logo is a registered trademark of STMicroelectronics.All other names are the property of their respective owners

© 2003 STMicroelectronics - All rights reserved

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TDA7496L

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