ST MICROELECTRONICS TDA 7269A Datasheet

14W+14W STEREO AMPLIFIER WITH MUTE & ST-BY

■ WIDE SUPPLY VOLTAGE RA NGE UP TO

+20V

■ SPLIT SUPPLY

■ HHIGH OUTPUT POWER 14+14W

@THD = 10%, R

■ NO POP AT TURN-ON/OFF

■ MUTE (POP FREE)

■ STAND-BY FEATURE (LOW I

■ SHORT CIRCUIT PROTECTION TO GND

■ THERMAL OVERLOAD PROTECTION

DESCRIPTION

The TDA7269A is class AB Dual Audio Power amplifier assembled in the Multiwatt package, specially de-

= 8Ω, VS = ±16V

L

q

)

TDA7269A

Multiwatt11

ORDERING NUMBER: TDA7269A

signed for high quality sound application as Hi-Fi music centers and stereo TV sets.

Figure 1. Typical Application Circuit

+5V

15K 1µF

µP

1µF

MUTE/

ST-BY

IN (L)

18K15K

GND

IN (R)

D94AU085

+V

S

1000µF

5 7

9

11

+

-

+

1

1000µF

3

6

-V

S

OUT (L)

4

18K

IN- (L)

8

10 IN- (R)

OUT (R)

2

560Ω

18K

4.7Ω

100nF

4.7Ω

100nF

560Ω

RL (L)

RL (R)

June 2003

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TDA7269A

ABSOLUTE MAXIMUM RATINGS

Symbol Parameter Value Unit

V

I

O

P

tot

T

op

T

stg

PIN CONNECTION

DC Supply Voltage ±22 V

S

Output Power Current (internally limited) 3 A Total Power Dissipation (Tamb = 70°C) 40 W Operating Temperature 0 to 70 °C

, TjStorage and Junction Temperature -40 to 150 °C

(Top view)

11 10

9 8 7 6 5 4 3 2 1

TAB CONNECTED TO PIN 6

D95AU316

IN+(1) IN-(1) GND IN-(2) IN+(2)

-V

S

MUTE OUTPUT(2) +V

S

OUTPUT(1)

-V

S

THERMAL DATA

Symbol Parameter Value Unit

R

th j-case

Thermal Resistance Junction-case Max. 2.8 °C/W

Figure 2. Sin gl e Su pply Applicati on

+V

S

C5

OUT (L)

IN- (L)

IN- (R)

OUT (R)

1000µF

R4

30K

R5 1K

R6

30K

R7 1K

3

4

8

2

10

1

6 GND

C6

0.1µF

C9 470µF

R8

4.7Ω C7

0.1µF

C10 470µF

R9

4.7Ω C8

0.1µF

D96AU444A

OUT

(L)

OUT

(R)

10KC11µF

0

MUTE

R1

PLAY

5V

C2

100µF

Q1

BSX33

R2

15K

R3

15K

C3 1µF

C4 1µF

MUTE

IN (L)

IN (R)

D1 5.1V

5 7

9

11

+

-

+

-

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TDA7269A

ELECTRICAL CHARACTERISTCS

f = 1KHz; T

= 25°C, unless otherwise specified)

amb

(Refer to the test circuit VS = ±16V; RL = 8Ω; RS = 50

Ω;

GV = 30dB,

Symbol Parameter Test Condition Min. Typ. Max. Unit

V

P

Supply Voltage Range RL = 8Ω ±5 ±20 V

S

R

= 4Ω ±5 ±15 V

L

I

Total Quiescent Current 60 100 mA

q

Input Offset Voltage -25 25 mV

OS

I

Non Inverting Input Bias Current 500 nA

b

Output Power THD = 10%;

O

= 8Ω;

R

L

V

= ±12.5V; RL = 4Ω;

S

12

8

10

14

THD = 1%;

THD Total Harmonic Distortion R

= 8Ω;

R

L

VS = ±12.5V; RL = 4Ω;

= 8Ω; PO = 1W; f = 1KHz; 0.03 %

L

R

= 8Ω; PO = 0.1 to 7W;

L

9 6

11

7.5

0.7 %

f = 100Hz to 15KHz; RL = 4Ω; PO = 1W; f = 1KHz; 0.02 % R

= 4Ω; VS = ±10V;

L

1% PO = 0.1 to 5W; f = 100Hz to 15KHz;

W W

C

T

Cross Ta lk f = 1KHz;

f = 10KHz; 50

70 60

SR Slew Rate 6.5 10 V/µs

G

e

SVR Supply Voltage Rejection

Open Loop Voltage Gain 80 dB

OL

Total Output Noise A Curve

N

f = 20Hz to 22KHz

Input Resistance 15 20 KΩ

R

i

f = 100Hz; V

= 0.5V 60 dB

R

3 48

(each channel) Thermal Shut-down Junction

T

j

145 °C

Temperature

MUTE FUNCTION [ref +V

VT

A

MUTE

Mute /Play threshold -7 -6 -5 V

MUTE

Mute Attenuation 60 70 dB

STAND-BY FUNCTIONS [ref: +V

VT

A

ST-BY

I

qST-BY

(*) In mute c ondition the current drawn fr om Pin 5 must be ≤650µA

Stand-by Mute threshold -3.5 -2.5 -1.5 V

ST-BY

Stand-by Attenuation 110 dB Quiescent Current @ Stand-by 3 6 mA

S

] (*)

] (only for Split Supply)

S

dB dB

µV µV

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TDA7269A

MUTE STAND-BY FUNCTION

The pin 5 (MUTE/STAND-BY) controls the amplifier status by two different thresholds, referred to +VS.

– When V

are off.

– When V

the amplifier is in mute mode.

– When V

Figure 3.

higher than = +VS -2.5V the amplifier is in Stand-by mode and the final stage generators

pin5

between +VS -2.5V and +VS -6V the final stage current generators are switched on and

pin5

is lower than +VS -6V the amplifier is play mode.

pin5

+V

S

(V)

20

t

-V

S

-20

V

IN

(mV)

Vpin5

(V) V

S

VS-2.5

V

S-

VS-10

I

q

(mA)

0

VOUT

(V)

6

OFF

STDBY

PLAY STDBY PLAY OFF

STDBY

4/9

MUTE

D94AU086

MUTE

Figure 4. Tes t an d A pplication Circui t (St ereo Configurat i on)

+V

S

TDA7269A

R2 C3

Q1

R1

SW1

ST-BY

DZ

SW2

MUTE

R4

C1

R3

C2

APPLICATION SUGGESTIONS

MUTE/ ST-BY

D94AU087B

IN (L)

GND

IN (R)

5 7

-

9

11

+

(Demo Board Schematic)

+V

S

3

4+

8

10 IN- (R)

2

C7

6

-V

S

C6

1

C4

OUT (L)

R5

IN- (L)

R6

R8

OUT (R)

R10

C9

R9

C5

R7

C8

RL (L)

RL (R)

The recommended values of the exter nal components are thos e shown the demoboar d s chematic differ ent values can be used, the following table can help the designer.

COMPONEN T

SUGGESTIO N

VALUE

PURPOSE

LARGER THAN

RECOMMENDED VALUE

SMALLER THAN

RECOMMENDED VALUE

R1 10KΩ Mute Circuit Increase of Dz Biasing

Current R2 15KΩ Mute Circuit V R3 18KΩ Mute Circuit V R4 15KΩ Mute Circuit V

R5, R8 18KΩ Closed Loop Gain

#5 Shifted Downward V

#5 Shifted Upward V

Increase of Gain

#5 Shifted Upward

#5 Shifted Downward

Setting (*)

R6, R9 560Ω Decrease of Gain

R7, R10 4.7Ω Frequency Stability Danger of Oscillations Danger of Oscillations

C1, C2 1µF Input DC Decoupling Higher Low Frequency Cutoff

C3 1µF S t-By/M ute Time

Larger On/Off Time Smaller On/Off Time

Constant C4, C6 1000µF Supply Voltage Bypass Danger of Oscillations C5, C7 0.1µF Supply Voltage Bypass Danger of Oscillations C8, C9 0.1µF Frequency Stability

Dz 5.1V Mute Circuit

(*) Closed loop gain has to be ≥25dB

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TDA7269A

BRIDGE APPLICATION

Another application suggestion concerns the Bridge configuration , where the two power amplifiers are connected as shown by the schematic diagrams of figure 5 “Split Power Supply” , and figure 6 “Single Power Supply”.

This application shows,however, some operative limits due to dissipation and current capability of the output stage.

For this reason we recommend to use the TDA7269A in BTL with the following supply voltages depending on the used load impedance (for the single supply consider double Vs) :

±Vs (V) Rload (ohm)

14 8 11 6 10 4

The detected characteristics of THD vs Pout are shown in figg: 7, 8 and 9 for the different load impedances. With Rload = 8ohm , Vs = ±14V the maximum output power obtainable is 30W at THD = 10% (fig. 9). With

Rload = 6ohm , Vs = ±12V the maximum output power obtainable is 28W at THD = 10% (fig. 8). With Rload = 4ohm , Vs = ±10V the maximum output power obtainable is 20W at THD=10% (fig. 7).

We suggest not to exceed the suggested supply voltages in order to avoid the current limiter intervention.

Figure 5. Split Power Supply Application Diagram

ST-BY/

MUTE

35

6

IN

D94AU190

C1

1µF

C2

1µF

7

9

11

-

+

1

C5

0.1µF

C3

0.1µF

4+

8

10

2

C6

1000µF

+V

C4

1000µF

R5 4.7Ω

R1

36KΩ

R2

560Ω

R4

560Ω

R3

36KΩ

R6

4.7Ω

-V

S

C9

0.1µF

S

C7

0.1µF

RL

C8

5.6nF

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Figure 6. Single Power Supply Application Diagram

5.1V

+V

TDA7269A

S

10K 1µF

15K

MUTE

0

MUTE

PLAY

5V

BSX33

15K

100µF

1µF

IN (L)

IN (R)

Figure 7. Disto rti on v s Output Power

THD(%)

10

5

5 2

2 1

1

0.5

0.2

0.1

0.05

0.02

0.01

0.01 600m 40123456789 2030

600m 40123456789 2030

Vs =+/- 10V

Vs =+/- 10V Rload =4 ohm

Rload =4 ohm f=1KHz

f=1KHz

Pout (W)

1000µF

5 7

+

-

9

11

+

3

OUT (L)

4

30K

8

IN- (L)

1K

2

IN- (R)

0.1µF

4.7Ω

0.1µF

OUT

30K

OUT (R)

10

1

6

1K

4.7Ω

0.1µF

GND

5.6nF

D03AU1518

Figure 9. Disto rti on v s Output Power

THD(%)

10

5

Vs =+/- 14V

2

2 1

1

0.5

0.2

0.1

0.05

0.02

0.01

0.01 600m 40123456789 2030

600m 40123456789 2030

Vs =+/- 14V Rload =8 ohm

Rload =8 ohm f=1KHz

f=1KHz

Pout (W)

Figure 8. Disto rti on v s Output Power

THD(%)

10

5

5 2

2 1

1

0.5

0.2

0.1

0.05

0.02

0.01

0.01 600m 40123456789 2030

600m 40123456789 2030

Vs =+/- 12V

Vs =+/- 12V Rload =6 ohm

Rload =6 ohm f=1KHz

f=1KHz

Pout (W)

7/9

TDA7269A

DIM.

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

A 5 0.197

B 2.65 0.104 C 1.6 0.063 D 1 0.039

E 0.49 0.55 0.019 0.022

F 0.88 0.95 0.035 0.037 G 1.45 1.7 1.95 0.057 0.067 0.077

G1 16.75 17 17.25 0.659 0.669 0.679 H1 19.6 0.772 H2 20.2 0.795

L 21.9 22.2 22.5 0.862 0.874 0.886

L1 21.7 22.1 22.5 0.854 0.87 0.886 L2 17.4 18.1 0.685 0.713 L3 17.25 17.5 17.75 0.679 0.689 0.699 L4 10.3 10.7 10.9 0.406 0.421 0.429 L7 2.65 2.9 0.104 0.114

M 4.25 4.55 4.85 0.167 0.179 0.191

M1 4.73 5.08 5.43 0.186 0.200 0.214

S 1.9 2.6 0.075 0.102

S1 1.9 2.6 0.075 0.102

Dia1 3.65 3.85 0.144 0.152

mm inch

OUTLINE AND

MECHANICAL DATA

Multiwatt11 V

8/9

TDA7269A

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 implic ation or otherwise under any patent or patent right s of STMicroelectronics . S pecifications mentioned i n this public ation are subj ect to change without notice. This publication supersedes and replaces all information previously supplied. STMicroelectronics products are not authorized for use as criti cal components i n l i f e support device s or systems without express written approval o f STM i croelectronics.

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