SGS Thomson Microelectronics TDA7264A, TDA7264 Datasheet

TDA7264



25 + 25W STEREO AMPLIFIER WITH MUTE/ST-BY

WIDE SUPPLY VOLTAGE RANGE (UP TO
50V ABSMAX.)

SPLIT SUPPLY
HIGHOUTPUTPOWER:

25 + 25W @ THD =10%, R
NO POPAT TURN-ON/OFF
MUTE(POP FREE)
STAND-BY FEATURE (LOWI
FEWEXTERNALCOMPONENTS
SHORTCIRCUITPROTECTION
THERMALOVERLOAD PROTECTION

DESCRIPTION

The TDA7264/TDA7264A is class AB dual Audio
power amplifier assembled in the Multiwatt pack­age, speciallydesigned for high quality sound ap-

=8Ω,VS= +20V

L

Q)

TDA7264A

Multiwatt 8 Multiwatt 11

ORDERING NUMBER: TDA7264 (Multiwatt 8)

TDA7264A (Multiwatt 11)

plication as Hi-Fi music centers and stereo TV
sets.

Figure 1: Typical ApplicationCircuit for TDA7264

+5V

15K 1µF

µP

1µF

1µF

MUTE/

ST-BY

IN (L)

18K15K

GND

IN (R)

D94AU069A

4
6

7

8

-

-

+

1000µF

+V

S

OUT (L)

4.7Ω

OUT (R)

4.7Ω

1000µF

RL (L)

100nF

RL (R)

100nF

+V
2

5

-V

S

3+

1

S

April 1999

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TDA7264 - TDA7264A

Figure 2: Typical ApplicationCircuit for TDA7264A

+V

S

1000µF

OUT (L)

4.7Ω

100nF

OUT (R)

4.7Ω

100nF

+5V

15K 1µF

µP

1µF

1µF

MUTE/

ST-BY

IN (L)

18K15K

GND

IN (R)

D98AU955

5
7

9

11

-

-

+

1

1000µF

3

4+

2

6

-V

S

ABSOLUTE MAXIMUM RATINGS

Symbol Parameter Value Unit

V

I

O

P

tot

T

stg,Tj

DC Supply Voltage 50 V

S

Output Peak Current (internally limited) 4.5 A
Power Dissipation T

=70°C30W

case

Storage and Junction Temperature -40 to +150 °C

RL (L)

RL (R)

PIN CONNECTION (Topview)

Tab connected to pin 5

Multiwatt 8

8 IN (1)
7
6
5
4
3
2
1

D94AU096

GND
IN (2)

-V

S

MUTE/ST-BY
OUTPUT (2)
+V

S

OUTPUT (1)

TAB CONNECTEDTOPIN 6

Multiwatt 11

11
10

9
8
7
6
5
4
3
2
1

D98AU956

IN(1)
NOT CONNECTED
GND
NOT CONNECTED
IN(2)

-V

S

STBY/MUTE
OUTPUT(2)
+V

S

OUTPUT(1)

-V

S

THERMAL DATA

Symbol Description Value Unit

Thermal Resistance Junction-case Max 2

2/12

R

th j-case

C/W

°

TDA7264 - TDA7264A

ELECTRICALCHARACTERISTICS (Refer to the test circuit, VS+ 20V; RL=8Ω;Rs=50Ω;

f = 1KHz; T

Symbol Parameter Test Condition Min. Typ. Max. Unit

V

S

I

q

P

O

P

O

THD Total Harmonic Distortion R

C

T

SR Slew Rate 10 V/µs
G

V

∆G

V

e

N

R

i

SVR Supply Voltage Rejection

T

j

MUTE FUNCTION [ref: +V

VT

MUTE

A

M

STAND-BY FUNCTION [ref:+V

VT

ST-BY

A

ST-BY

I

q ST-BY

Note :

(*) FULL POWER up to.V

MUSIC POWER is the maximal power which the amplifier is capable of producing across theratedloadresistance (regardless of non linearity)

1 sec after the application of a sinusoidal input signal of frequency 1KHz.

=25°C, unless otherwise specified.)

amb

Supply Range +5 +22.5 V
Total Quiescent Current 80 130 mA
Music Output Power (*) THD = 10%; RL=8Ω ;

V

+ 22.5V

S

32 W

Output Power THD = 10%

R

=8Ω ;

L

V

+ 16V; RL=4

S

Ω

20 25

25

THD = 1%
R

=8Ω ;

L

V

+ 16V; RL=4

S

=8Ω ;PO= 1W; f = 1KHz 0.02 %

L

=8Ω ;

R

L

P

= 0.1 to 15W;

O

Ω

20
20

0.5 %

f = 100Hz to 15KHz
R

=4Ω;PO= 1W; f = 1KHz 0.03 %

L

=4Ω ;VS+ 16V;

R

L

P

= 0.1 to 12W;

O

1%

f = 100Hz to 15KHz

Cross Talk f = 1KHz

f = 10KHz

70
60

Closed Loop Voltage Gain 29 30 31 dB
Voltage Gain Matching 0.2 dB
Total Input Noise A Curve

f = 20Hz to 22KHz

2.5

3.5 8

Input Resistance 15 20 KΩ

fr = 100Hz; Vripple= 0.5V

RMS

60 dB

(each channel)
Thermal Shut-down

145

Junction Temperature

S]

Mute / PlayThreshold -7 -6 -5 V
Mute Attenuation 60 90 dB

]

S

Stand-by / Mute Threshold -3.5 -2.5 -1.5 V
Stand-by Attenuation 110 dB
Quiescent Current@ Stand-by 3 mA

=±22.5V with RL=8Ωand VS= ±16V with RL=4Ω

S

W
W

W
W

dB
dB

µV
µ

°

V

C

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TDA7264 - TDA7264A

Figure 3: Demo Board Schematic TDA7264

R2

C3

1µF

R4

15K

SW2

MUTE

C1 1µF

MUTE/

ST-BY

IN (L)

R3

18K

GND

SW1
ST-BY

R1

15K

Q1

DZ

+V

S

+V

S

4
6

-

7

2

3+

C4

1000µF

OUT (L)

R5

4.7Ω
C8

100nF

C5

100nF

RL (L)

C2 1µF

IN (R)

D94AU068B

8

-

+

C7

100nF

1

OUT (R)

5

-V

S

C6

1000µF

R6

4.7Ω

100nF

RL (R)

C9

Figure 3a: P.C.Board And ComponentLayout of the Demo Board Schematic TDA7264 (1:1 Scale)

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Figure 4: Demo Board Schematic TDA7264A

+V

TDA7264 - TDA7264A

S

SW1

ST-BY

R1

DZ

SW2

MUTE

R2 C3

Q1

R4

R3

C1

C2

MUTE/

ST-BY

IN (L)

GND

IN (R)

D98AU957

+V

S

C7

3

4+

2

6

-V

S

C6

5
7

-

9

11

-

+

1

C4

OUT (L)

OUT (R)

R10

C9

C5

R7

C8

RL (L)

RL (R)

Figure 4a: P.C.Board And ComponentLayout of the Demo Board Schematic TDA7264A (1:1 Scale)

TDA7264A

5/12

TDA7264 - TDA7264A

APPLICATIONS SUGGESTIONfor TDA7264

(Demo Board Schematic)
The recommended values of the external compo-

COMPONENTS

R1 10KΩ Mute Circuit
R2 15KΩ Mute Circuit V

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

R5, R6 4.7Ω Frequency Stability Danger of Oscillations Danger of Oscillations
C1, C2 1µF

C3 1µF

C4, C6 1000µF

C5, C7 0.1µF
C8, C9 0.1µF Frequency Stability

Dz 5.1V Mute Circuit

Q1 BC107 Mute Circuit

RECOMMENDED

VALUE

PURPOSE

Input DC
Decoupling

St-By/Mute Time
Constant

Supply Voltage
Bypass

Supply Voltage
Bypass

APPLICATIONS SUGGESTIONfor TDA7264A

(Demo Board Schematic)
The recommended values of the external compo-

COMPONENTS

R1 10K
R2 15KΩ Mute Circuit V

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

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

C1, C2 1µF

C3 1µF

C4, C6 1000µF

C5, C7 0.1µF
C8, C9 0.1µF Frequency Stability

Dz 5.1V Mute Circuit

Q1 BC107 Mute Circuit

RECOMMENDED

VALUE

Ω

PURPOSE

Mute Circuit

Input DC
Decoupling

St-By/Mute Time
Constant

Supply Voltage
Bypass

Supply Voltage
Bypass

nents are those shown on the demo board sche­matic. Different values can be used: the following
table can help the designer.

LARGER THAN

RECOMMENDED VALUE

Increase of Dz
Biasing Current

pin # 4 Shifted Downward Vpin # 4 Shifted Upward
pin # 4 Shifted Upward Vpin # 4 Shifted Downward
pin # 4 Shifted Upward Vpin # 4 Shifted Downward

Larger On/Off Time Smaller On/OffTime

SMALLER THAN

RECOMMENDED VALUE

Higher Low Frequency
Cutoff

Danger of Oscillations

Danger of Oscillations

nents are those shown are the demo board sche­matic different values can be used: the following
table can help the designer.

LARGER THAN

RECOMMENDED VALUE

Increase of Dz
Biasing Current

pin # 5 Shifted Downward Vpin # 5 Shifted Upward
pin # 5 Shifted Upward Vpin # 5 Shifted Downward
pin # 5 Shifted Upward Vpin # 5 Shifted Downward

Larger On/Off Time Smaller On/OffTime

SMALLER THAN

RECOMMENDED VALUE

Higher Low Frequency
Cutoff

Danger of Oscillations

Danger of Oscillations

MUTE, STAND-BY TRUTH TABLE

SW1 SW2

A A STAND-BY
A B STAND-BY
B B MUTE
B A PLAY

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TDA7264 - TDA7264A

Figure 5: QuiescentCurrent vs. Supply Voltage Figure6: FrequencyResponse

Figure 7: OutputPower vs SupplyVoltage

Figure8: Distortionvs. OutputPower

Figure 9: Crosstalkvs. Frequency Figure10: SupplyVoltageRejection vs.Fequency

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TDA7264 - TDA7264A

Figure 11: Attenuation& Total QuiescentCur-

rent vs. V

pin4

Voltage

Figure12: Power Dissipation vs. Output Power

8/12

TDA7264 - TDA7264A

MUTE STAND-BY FUNCTION

The pin 4 (MUTE/STAND-BY) controls the ampli­fier status by two different thresholds, referred to

.

+V

S

- When V

higher than = +VS- 2.5V the

pin4

amplifier is in Stand-by mode and the final
stage generatorsare off

Figure 13

+V

S

(V)

20

-V

S

-20

V

IN

(mV)

- when V

is between +VS- 2.5V and +V

pin4

- 6V the final stage current generators are
switched on and the amplifier is in mute
mode

- when V

is lower than +VS- 6V the am-

pin4

plifier is play mode.

t

S

Vpin4

(V)

V

S

VS-2.5

VS-6

VS-10

I

q

(mA)

0

VOUT

(V)

STDBY

OFF

PLAY STDBY PLAY OFF

STDBY

MUTE MUTE

D94AU084

MUTE

MUTE

9/12

TDA7264 - TDA7264A

DIM.

A 5 0.197
B 2.65 0.104
C 1.6 0.063
E 0.49 0.55 0.019 0.022
F 0.78 0.85 0.030 0.033

G 2.40 2.54 2.68 0.094 0.10 0.105
G1 17.64 17.78 17.92 0.69 0.70 0.71
H1 19.6 0.772
H2 20.2 0.795

L 20.35 20.65 0.80 0.81
L2 17.05 17.20 17.35 0.67 0.68 0.68
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

S 1.9 2.6 0.075 0.102

S1 1.9 2.6 0.075 0.102

U 0.40 0.55 0.015 0.022
Z 0.70 0.85 0.028 0.034

Dia1 3.65 3.85 0.144 0.152

mm inch

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

OUTLINE AND

MECHANICALDATA

Multiwatt8 (Pin. 5 Gnd)

10/12

TDA7264 - TDA7264A

DIM.

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

A5
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
L2 17.4 18.1 0.685
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

0.197

0.886

0.713

OUTLINE AND

MECHANICAL DATA

Multiwatt11 V

11/12

TDA7264 - TDA7264A

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