SGS Thomson Microelectronics TDA7296S Datasheet

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TDA7296S

60V - 60W DMOS AUDIO AMPLIFIER WITH MUTE/ST-BY

VERY HIGH OPERATING VOLTAGE RANGE
(±30V)

DMOSPOWER STAGE
HIGH OUTPUT POWER (THD = 10%, UP TO

60W)
MUTING/STAND-BY FUNCTIONS
NO SWITCHON/OFFNOISE
VERY LOW DISTORTION
VERY LOW NOISE
SHORTCIRCUIT PROTECTION
THERMAL SHUTDOWN
CLIPDETECTOR
MODULARITY (MORE DEVICES CAN BE

EASILY CONNECTED IN PARALLEL TO
DRIVEVERY LOW IMPEDANCES)

DESCRIPTION

The TDA7296S is a monolithic integrated circuit
in Multiwatt15 package,intended for use as audio
class AB amplifier in Hi-Fi field applications
(Home Stereo, self powered loudspeakers, Top-

Figure1: Typical Application andTest Circuit

MULTIPOWERBCD TECHNOLOGY

Multiwatt15

ORDERING NUMBER: TDA7296SV

class TV). Thanks to the wide voltage range and
to the high out current capability it is able to sup­ply the highest powerinto both4Ω and8Ω loads.

The built in muting function with turn on delay
simplifiesthe remote operation avoiding switching
on-off noises.
Parallel mode is made possible by connecting
more device through of pin11. High output power
can be delivered to very low impedance loads,so
optimizingthe thermal dissipationof the system.

VMUTE

VSTBY

June 2000

C7 100nF C6 1000µF

R3 22K

C2

R2

22µF

680Ω

C1 470nF

R1 22K

R5 10K

R4 22K

C3 10µFC410µF

IN- 2

IN+

3

4

SGND
(**)

10

MUTE

9

STBY

(*) see Application
(**) for SLAVE function

note

MUTE

STBY

1
STBY-GND

+Vs

BUFFER DRIVER

713

11

-

+

THERMAL

SHUTDOWN

-Vs -PWVs

C9 100nF C8 1000µF

+PWVs+Vs

PROTECTION

158

-Vs

S/C

14

12

6
5

D97AU805A

OUT

BOOT
LOADER

C5

22µF

BOOTSTRAP

CLIP DET

(*)

VCLIP

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TDA7296S

PIN CONNECTION (Top view)

TAB CONNECTED TO PIN 8

15
14
13
12
11
10

9
8
7
6
5
4
3
2
1

D97AU806

-V

(POWER)

S

OUT

(POWER)

+V

S

BOOTSTRAP LOADER
BUFFER DRIVER
MUTE
STAND-BY

-V

(SIGNAL)

S

+VS(SIGNAL)
BOOTSTRAP
CLIP AND SHORT CIRCUIT DETECTOR
SIGNAL GROUND
NON INVERTING INPUT
INVERTING INPUT
STAND-BY GND

QUICK REFERENCEDATA

Symbol Parameter Test Conditions Min. Typ. Max. Unit

V

G

LOOP

P

tot

SVR Supply Voltage Rejection 75 dB

Supply Voltage Operating ±12 ± 30 V

S

Closed Loop Gain 26 40 dB
Output Power VS=±30V; RL=8Ω; THD = 10% 60 W

= ±25V; RL =4Ω; THD = 10% 60 W

V

S

ABSOLUTE MAXIMUM RATINGS

Symbol Parameter Value Unit

V
V
V

2 -V3 Maximum Differential Inputs ±30 V

V

V
V
V
V
V

V

10
11 Buffer Voltage Referredto -VS 60 V

V

12 Bootstrap Loader Voltage Referred to -VS 60 V

V

I

O

P

tot

T

op

T

stg,Tj

Supply Voltage (No Signal) ±35 V

S

VSTAND-BY GND Voltage Referred to -VS (pin 8) 60 V

1

Input Voltage (inverting) Referred to -V

2

3 Input Voltage (non inverting) Referred to-VS 60 V

Signal GND Voltage Referredto -V

4

Clip Detector Voltage Referred to -V

5
6 Bootstrap Voltage Referred to -VS 60 V
9 Stand-by Voltage Referredto -VS 60 V

Mute Voltage Referred to -V

S

S

S

S

60 V

60 V
60 V

60 V

Output Peak Current 10 A
Power Dissipation T

=70°C50W

case

Operating Ambient Temperature Range 0to 70 °C
Storage and JunctionTemperature 150 °C

THERMALDATA

Symbol Description Typ Max Unit

R

th j-case

Thermal Resistance Junction-case 1 1.5 °C/W

2/11

TDA7296S

ELECTRICAL CHARACTERISTICS (Referto the Test Circuit VS= ±24V,RL=8Ω,GV= 30dB;

R

=50Ω;T

g

Symbol Parameter Test Condition Min. Typ. Max. Unit

V

S

I

q

I

b

V

OS

I

OS

P

O

d Total Harmonic Distortion (**) P

SR Slew Rate 7 10 V/µs

G

V

G

V

e

N

f

L,fH

R

i

SVR Supply Voltage Rejection f = 100Hz; V

T

S

STAND-BY FUNCTION (Ref: -V

V

ST on

V

ST off

ATT

st-by

I

q st-by

MUTE FUNCTION (Ref: -V

V

Mon

V

Moff

ATT

mute

Note (**):

MUSIC POWER is themaximal power which the amplifieris capable of producing across the rated load resistance (regardless of non linearity)
1 sec after the applicationof a sinusoidal input signal of frequency 1KHz.

Note (**): Tested withoptimized Application Board (see fig. 2)

=25°C,f = 1 kHz; unlessotherwisespecified).

amb

Operating Supply Range ±10 ±30 V
Quiescent Current 20 30 60 mA
Input Bias Current 500 nA
Input Offset Voltage ±10 mV
Input Offset Current ±100 nA
RMS Continuous OutputPower d = 0.5%:

W
W
W

W
W
W

%
%

%
%

Music Power (RMS) (*)

∆t=1s

V

= ± 24V, RL=8Ω

S

V

=±21V, RL=6Ω

S

V

=±18V, RL=4

S

Ω

d = 10%;
R

=8Ω ;VS=±30V

L

R

=6Ω ;VS=±24V

L

R

=4Ω;VS=±23V

L

= 5W; f = 1kHz

O

P

=0.1to20W;f = 20Hzto 20kHz

O

= ±18V, RL=4Ω:

V

S

P

= 5W; f = 1kHz

O

P

=0.1to20W;f = 20Hzto 20kHz

O

27
27
27

30
30
30

60
60
60

0.005

0.1

0.01

0.1

Open Loop Voltage Gain 80 dB
Closed Loop Voltage Gain 24 30 40 dB
Total Input Noise A = curve

f = 20Hz to 20kHz

1
25

µV
µV

Frequency Response (-3dB) PO= 1W 20Hz to 20kHz
Input Resistance 100 kΩ

= 0.5Vrms 60 75 dB

ripple

Thermal Shutdown 150

or GND)

S

°

Stand-by on Threshold 1.5 V
Stand-by off Threshold 3.5 V
Stand-by Attenuation 70 90 dB
Quiescent Current @ Stand-by 1 3 mA

or GND)

S

Mute on Threshold 1.5 V
Mute off Threshold 3.5 V
Mute Attenuation 60 80 dB

C

3/11

TDA7296S

Figure2: Typical ApplicationP.C. Board and ComponentLayout (scale1:1)

4/11