Datasheet TDA7495S Datasheet (SGS Thomson Microelectronics)

®

11+11W OUTPUT POWER
R

= 8Ω @THD = 10% VCC = 28V

L

ST-BY AND MUTE FUNCTIONS
LOW TURN-ON TURN-OFF POP NOIS E
NO BOUCHEROT CELL
NO ST-BY RC INPUT NETWORK
SINGLE SUPPLY RANGING UP TO 35V
SHORT CIRCUIT PROTECTION
THERMAL OVERLOAD PROTECTION
INTERNALLY FIXED GAIN
SOFT CLIPPING
MULTIWATT 15 PACKAGE

DESCRIPTION

The TDA7495S is a stereo 11+11W class AB
power amplifier assembled in the @ Multiwatt 15
package, specially designed for high quality
sound, TV applications.

TDA7495S

11W+11W AMPLIFIER

MULTIPOWER BI50II TECHNOLOGY

Multiwatt15

ORDERING NUMBER:

Features of the TDA7495S include linearStand-by
and mute functions.

TDA7495S

BLOCK AND APPLICATION DIAGRAM

INR

470nF

S_GND

PW_GND

INL

470nF

SVR 7

470µF

1

8

11

5

30K

+

­OP AMP

MUTE/STBY

PROTECTIONS

+

-30K
OP AMP

V
13

S

1000µF

OUTR

STBY

MUTE

OUTL

1000µF

PW_GND

D99AU1015

10K

1µF

S1 ST-BY

+5V

S_GND

+5V

S2 MUTE

60K

14

9

10

12

15

Jenuary 2000

1/11

TDA7495S

ABSOLUTE MAXIMUM RATINGS

Symbol Parameter Value Unit

V

S

V

IN

P

tot

T

amb

, T

T

stg

(1) Operation between -20 to 85 °C guaranteed by correlation with 0 to 70°C.

DC Supply Voltage 40 V
Maximum Input Voltage 8 Vpp
Total Power Dissipation (Tamb = 70°C) 20 W
Ambient Operating Temperature (1) -20 to 85 °C
Storage and Junction Temperature -40 to 150 °C

j

PIN CONNECTION

(Top view)

15
14
13
12
11
10

PW_GND
OUTR
V

S

OUTL
PW_GND

MUTE
9
8
7
6
5
4
3
2
1

D99AU1016

STBY

S_GND

SVR

N.C.

INL

N.C.

N.C.

N.C.

INR

THERMAL DATA

Symbol Parameter Value Unit

R

th j-case

R

th j-amb

Thermal Resistance Junction-case Typ. = 2 Max. = 2.8 °C/W
Thermal Resistance Junction-ambient max 35 °C/W

ELECTRICAL CHARACTERISTICS

(Refer to the te s t ci r cui t V

= 20V; RL = 8Ω, Rg = 50Ω, T

S

= 25°C).

amb

Symbol Parameter Test Condition Min. Typ. Max. Unit

V

DCV

S

I

q

Supply Voltage Range 11 35 V
Total Quiescent Current 70 100 mA
Output DC Offset Referred to

OS

No Input Signal -750 750 mV

SVR Potenial

V

O

P

O

Quiescent Output Voltage VS = 20V 8.5 10 11.5 V
Output Power THD = 10%; RL = 8Ω; VS = 28V 9.5 11 W

THD = 1%; RL = 8Ω; VS = 28V 7.5 8.8 W
THD = 10%; R

= 4Ω; VS = 20V 7 8.7 W

L

THD = 1%; RL = 4Ω; VS = 20V 5 6.8 W
THD = 10%; R
THD = 1%; R

= 8Ω; VS = 18V 3.5 4 W

L

= 8Ω; VS = 18V 2.2 3.2 W

L

2/11

TDA7495S

ELECTRICAL CHARACTERISTICS

(continued)

Symbol Parameter Test Condition Min. Typ. Max. Unit

THD Total Harmonic Distortion G

I

peak

V

A

Min VOL

in

Output Peak Current (internally limited) 1.7 2.4 A
Input Signal 2.8 Vrms
Attenuation at Minimum Volume Vol Ctrl < 0.5V 80 dB

= 30dB; PO = 1W; f = 1KHz; 0.4 %

V

BW 0.6 MHz

e

N

Total Output Noise f = 20Hz to 22KHz

60 150 µV

Play
f = 20Hz to 22KHz

60 150 µV

Mute

SR Slew Rate 5 8 V/µs

R

i

SVR Supply Voltage Rejection f = 1kHz; max volume

T

M

T

s

Input Resistance 22.5 30 KΩ

35 39 dB

C

= 470µF; V

SVR

f = 1kHz; max attenuation
C

= 470µF; V

SVR

RIP

RIP

= 1V

=1V

rms

55 65 dB

rms

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

MUTE STAND-BY & INPUT SELECTION FUNCTIONS

V

ST-BY

V

MUTE

I

qST-BY

A

MUTE

I

stbyBIAS

Stand-by threshold 2.3 2.5 2.7 V
Mute Threshold 2.3 2.5 2.7 V
Quiescent Current @ Stand-by 0.6 1 mA
Mute Attenuation 50 65 dB
Stand-by bias current Stand by on V

V

ST-BY

MUTE

= 5V

= 5V

80 µA

Play or Mute -20 -5 µA

I

muteBIAS

Mute bias current Mute 1 5 µA

Play 0.2 2 µA

µA

3/11

TDA7495S

Figure 1a:

Application Circuit.

+V

S

C4 470µF

INR

INL

C1

1000µF

PW_GND

C2 470nF

S_GND

C3 470nF

SVR 7

C9

0.1µF

V

S

11
1

30K

8

PROTECTIONS

5

13

+

­OP AMP

MUTE/STBY

+

-30K
OP AMP

15

14

10

12

9

PW_GND

C8 1000µF

C7

1µF

C6 1000µF

D99AU1017

R2 10K

PW_GND
OUTR

OUTL
PW_GND

S1 STBY

S2 MUTE

+5V

S_GND

+5V

Figure 1b:

P.C.B. and Component Layout.

4/11

TDA7495S

APPLICATION SUGGES TION S

The recommended values of t he external components are those shown on t he application circuit of fig­ure 1a. Different values can be used, the following table can help the designer.

COMPONENT

SUGGESTION

VALUE

PURPOSE

LARGER THAN

SUGGESTION

SMALLER THAN

SUGGESTION

R2 10K Mute time constant Larger mute on/off time Smaller mute on/off time
C1 1000µF

Supply voltage
bypass

Danger of oscillation

C2 470nF Input DC decoupling Lower low frequency cutoff Higher low frequency cutoff
C3 470nF Input DC decoupling Lower low frequency cutoff Higher low frequency cutoff
C4 470µF Ripple rejection Better SVR Worse SVR
C6 1000µF Output DC decoupling Lower low frequency cutoff Higher low frequency cutoff
C7 1µF Mute time costant Larger mute on/off time Smaller mute on/off time
C8 1000µF Output DC decoupling Lower low frequency cutoff Higher low frequency cutoff

C9 100nF

Supply voltage
bypass

Danger of oscillation

TYPICAL CHARACTERISTICS:

Refer to the application circuit of f ig.1A T
otherwise specified.

Figure 2:

P

Output Power vs Supply Voltage

OUT

(W)

16
14
12
10

8
6
4
2
0

11 15 19 23 27 31 VS(V)

RL=8Ω

d=10%

D97AU559

d=1%

amb

= 25°C; VS = 20V; RL = 8Ω; F = 1KHz; RS = 50Ω; unless

Figure 3:

Distortion vs Output Power

d

(%)

VS=28V

=8Ω

R

1

0.1

0.01
02468P

L

f=15KHz

f=1KHz

D97AU560

OUT

(W)

5/11

TDA7495S

Figure 4:

P

OUT

(W)

14
12
10

8
6
4
2
0

10 12 14 16 18 20 22 24 VS(V)

Figure 6:

ATT
(dB)

0

-20

-40

-60

-80

Output Power vs Supply Voltage

D97AU561

RL=4Ω

d=10%

d=1%

Stand-by Attenuation vs Vpin #9

D97AU565

0dB=1W

Figure 5:

d

(%)

1

0.1

0.01
0246P

Figure 7:

ATT
(dB)

0

-20

-40

-60

Distortion vs Output Power

D97AU562

VS=20V
R

=4Ω

L

f=15KHz

f=1KHz

Mute Attenuation vs V pin #10

D97AU566

0dB=1W

OUT

(W)

-100

-120
0 1 2 3 4 Vpin#9(V)

Figure 8:

P

Power dissipation vs Output Power

DISS

(W)

10

RL=2 x 8Ω
f=1KHz

8

6

4

2

0

0.1 1 10 P

6/11

VS=14V

VS=28V

VS=24V

VS=18V

D97AU567

OUT

(W)

-80

-100
01234Vpin#10(V)

Figure 9:

P

Power Dissipation vs Output Power

DISS

(W)

RL=2 x 4Ω

16

f=1KHz

12

8

4

0

0.1 1 10P

VS=26V

VS=20V

D97AU568

OUT

(W)

MUTE STAND-BY TRUTH TABLE

MUTE ST-BY OPERATING CONDITION

H H STANDBY

L H STANDBY

H L MUTE

L L PLAY

Turn ON/OFF Sequences (for optimizing the POP performances)

A) USING MUTE AND STAND-BY FUNCTION S

(V)

V

S

28

ST-BY

pin#9 (V)

5

V

SVR

pin#7(V)

TDA7495S

2.5V

MUTE

pin#10 (V)

5

INPUT

(mV)

V

OUT
(V)

I

Q

(mA)

B) USING ONLY THE MUTE FUNCTI ON
To semplify the application, the stand-by pin can

be connected directly to Ground.
During the ON/OFF tr ansitions we recommend to

respect the following conditions:

OFFSTBY MUTE PLAY STBYOFF MUTE

D96AU531A

- At the turn-on the transition mute to play must
be made when the SVR pin is higher than

2.5V

- At the turn-off the TDA7495S must be brought
to mute from the play condition when the SVR
pin is higher than 2.5V.

7/11

TDA7495S

PINS:

INL, INR

INn

30K

6K

PIN:

MUTE

V

S

V

S

500µA

200MUTE

10K

50µA

SVR

PINS:

PW-GND, S-GND

PIN:

STBY

STBY

GND

200

D97AU589

V

D97AU593

D97AU592

PINS:

OUT R, OUT L

V

S

S

D97AU588

V

S

OUT

10µA

8/11

65K

D97AU594

PIN:

TDA7495S

SVR

SVR

V

S

20K

20K

100µA

V

S

V

S

+

OUT L

-

6K

6K

1K

1K

30K

30K

-

OUT R

+

D97AU585A

9/11

TDA7495S

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 0.66 0.75 0.026 0.030

G 1.02 1.27 1.52 0.040 0.050 0.060
G1 17.53 17.78 1 8.03 0.690 0.700 0.710
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 0.870 0.886
L2 17.65 18.1 0.695 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 4.63 5.08 5.53 0.182 0.200 0.218

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

Multiwatt15 V

10/11

TDA7495S

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11/11