SGS Thomson Microelectronics TDA7496S Datasheet
®
5+5W OUTPUT POWER
R
= 8Ω @THD = 10% VCC = 22V
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 TDA7496 is a stereo 5+5W class AB power
amplifier assembled in the @ Multiwatt 15 package, specially designed for high quality s ound, TV
applications.
TDA7496S
5W+5W AMPLIFIER
MULTIPOWER BI50II TECHNOLOGY
Multiwatt15
ORDERING NUMBER:
Features of the TDA7496 include Stand-by and
mute functions.
TDA7496
BLOCK AND APPLICATION DIAGRAM
INR
470nF
S_GND
PW_GND
INL
470nF
470µF
1
30K
8
MUTE/STBY
PROTECTIONS
11
5
SVR 7
+
OP AMP
+
-30K
OP AMP
V
S
13
1000µF
OUTR
STBY
MUTE
OUTL
1000µF
PW_GND
10K
1µF
D99AU1015
S1 ST-BY
S2 MUTE
+5V
S_GND
+5V
60K
14
9
10
12
15
Jenuary 2000
1/10
TDA7496S
ABSOLUTE MAXIMUM RATINGS
Symbol Parameter Value Unit
V
S
V
IN
P
tot
T
amb
, T
T
stg
DC Supply Voltage 35 V
Maximum Input Voltage 8 Vpp
Total Power Dissipation (Tamb = 80°C) 15 W
Ambient Operating Temperature 0 to 70 °C
Storage and Junction Temperature -40 to 150 °C
j
PIN CONNECTION
(Top view)
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
D99AU1016
PW_GND
OUTR
V
S
OUTL
PW_GND
MUTE
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. = 4 Max. = 4.6 °C/W
Thermal Resistance Junction-ambient max 35 °C/W
ELECTRICAL CHARACTERISTICS
(Refer to the te s t ci r cui t V
= 22V; 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 10 32 V
Total Quiescent Current 25 50 mA
Output DC Offset Referred to
OS
No Input Signal 200 mV
SVR Potenial
V
O
P
O
THD Total Harmonic Distortion G
I
peak
V
in
G
V
Quiescent Output Voltage Vs = 22V 11 V
Output Power THD = 10%; RL = 8Ω; Vs = 22V 5 5.5 W
THD = 1%; R
THD = 10%; R
THD = 1%; R
= 30dB; PO = 1W; f = 1KHz; 0.4 %
V
= 8Ω; Vs = 22V 4 W
L
= 4Ω; VCC = 12V 2.1 W
L
= 4Ω; VCC = 12V 1.0 W
L
Output Peak Current (internally limited) 1 1.3 A
Input Signal 2.8 Vrms
Closed Loop Gain 28.5 30 31.5 dB
2/10
TDA7496S
ELECTRICAL CHARACTERISTICS
(continued)
Symbol Parameter Test Condition Min. Typ. Max. Unit
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;
T
M
T
s
Input Resistance 22.5 30 KΩ
35 39 dB
C
= 470µF; V
SVR
RIP
= 1V
rms
Thermal Muting 150 °C
Thermal Shut-down 160 °C
MUTE STAND-BY & INPUT SELECTION FUNCTIONS
V
ST-ON
V
ST-OFF
V
M ON
V
M OFF
I
qST-BY
A
MUTE
I
stbyBIAS
Stand-by ON threshold 3.5 V
Stand-by OFF threshold 1.5 V
Mute ON Threshold 3.5 V
Mute OFF Threshold 1.5 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
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
R2 10K Mute time constant Larger mute on/off time Smaller mute on/off time
C1 1000µF
Supply voltage
bypass
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
SMALLER THAN
SUGGESTION
Danger of oscillation
Danger of oscillation
3/10
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