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TDA7263SA
September 2003
s
WIDE SUPPLY VOLTAGE RANGE
s
HIGH OUTPUT POWER
12+12W @ V
S
=28V, R
L
= 8
, THD=10%
s
MUTE FACILITY (POP FREE) WITH LOW
CONSUMPTION
s
AC SHORT CIRCUIT PROTECTION
s
THERMAL OVERLOAD PROTECTION
DESCRIPTION
The TDA7263SA is class AB dual audio power am-
plifier assembled in the Clipwatt package, specially
designed for high quality sound application as HI-FI
music centers and stereo TV sets.
Pin to pin compatible with the TDA7253L,
TDA7263L
Clipwatt15
ORDERING NUMBER: TDA7263SA
12 + 12W STEREO AMPLIFIER WITH MUTING
TEST AND APPLICATION DIAGRAM
=
MUTE
SW
IN (R)
+V
S
R7 1K
27K
R1
1.5K
R2
47
R5
4.7
R6
4.7
C3
47
F
C4
0.1
F
C5
1000
F
47
F
C1 100nF
C6
TDA7263SA
5
10
14
9
13
7
15
3
+
-
IN (L)
27K
C2 100nF
1
+
-
C8
0.1
F
C10 1000
F
RL
(R)
R3
1.5K
R4
47
47
F
C7
C9
0.1
F
C11 1000
F
RL
(L)
8
D02AU1441
TDA7263SA
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ABSOLUTE MAXIMUM RATINGS
PIN CONNECTION (Top view)
BLOCK DIAGRAM
Symbol
Parameter
Value
Unit
V
S
Supply Voltage without Load
35
V
I
O
Output Peak Current (repetitive f >20Hz)
2.5
A
I
O
Output Peak Current (non repetitive, t = 100
s)
3.5
A
P
tot
Total Power Dissipation (T
case
= 70C)
20
W
T
op
Operating Temperature Range
0 to 70
C
T
stg
,T
j
Storage & Junction Temperature
-40 to 150
C
N.C.
GND
NON INVERTING INPUT(2)
GND
INVERTING INPUT(2)
N.C.
SVR/MUTING
N.C.
INVERTING INPUT(1)
N.C.
NON INVERTING INPUT(1)
OUT1
+V
S
OUT2
N.C.
D03AU1464
1
2
3
4
5
6
7
9
10
11
8
13
14
15
12
IN- L
IN+ L
SVR
IN- R
IN+ R
+V
S
OUT L
CF
COUP1
CF
COUP1
RFI 27K
RFI 27K
L
R
RF1
RF2
MUTE
8
3
1
5
14
15
13
+
-
9
7
+
-
RF3
RF4
10
D02AU1443
OUT R
GND
TURN-ON
AND OFF
REFERENCES
SC
PROTECTION
TH
PROTECTION
Tj
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TDA7263SA
THERMAL DATA
ELECTRICAL CHARACTERISTCS (Refer to the stereo test and application circuit, V
S
= 28V; R
L
= 8
;
G
v
= 30dB; f = 1KHz; T
amb
= 25C unless otherwise specified.)
TYPICAL CHARACTERISTICS (referred to the typical Application Circuit, V
S
= 28V, R
L
= 8
, unless oth-
erwise specified)
Symbol
Parameter
Value
Unit
R
th j-case
Thermal resistance junction to case
Max
3.5
C/W
Symbol
Parameter
Test Condition
Min.
Typ.
Max.
Unit
V
S
Supply Voltage
10
32
V
V
O
Quiescent Output Voltage
13.5
V
I
q
Total Quiescent Current
70
95
mA
P
O
Output Power (RMS)
d = 10%; T
amb
= 85
C
10
12
W
d = 1%
9.5
W
d
Total Harmonic Distortion
P
O
= 1W, f = 1kHz
0.02
0.2
%
f = 100Hz to 10KHz; P
O
= 0.1 to 8W
0.5
%
C
T
Cross Talk
R
S
= 10K
; f = 1KHz
70
dB
R
S
= 10K
; f = 10KHz
60
dB
R
I
Input Resistance
100
200
K
f
L
Low Frequency Roll-off (-3dB)
40
Hz
f
H
High Frequency Roll-off (-3dB)
80
KHz
e
N
Total Input Noise Voltage
A Curve; R
S
= 10K
1.5
mV
f = 22Hz to 22KHz; R
S
= 10K
3
10
V
SVR
Supply Voltage Rejection
(each channel)
R
S
= 10K
; f = 100Hz; V
r
= 0.5V
45
60
dB
T
j
Thermal Shutdown Junction
Temperature
145
C
MUTE FUNCTION
VT
MUTE
Mute Threshold
1
1.6
V
VT
PLAY
Play Threshold
4.5
V
ATT
AM
Mute Attenuation
70
100
dB
I
qMUTE
Quiescent Current @ Mute
7
10
mA
Figure 1. Output Power vs. Supply Voltage
Figure 2. Distortion vs. Output Power
TDA7263SA
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Figure 3. Quiescent Current vs. Supply Voltage
Figure 4. Supply Voltage Rejection vs. Freq.
Figure 5. Crosstalk vs. Frequency
Figure 6. Output Attenuation & Quiescent
Current vs. V
pin5
Figure 7. Total Power Dissipation vs. Output
Power
BUILT-IN PROTECTION SYSTEMS
Thermal Shut-down
The presence of a thermal limiting circuit offers the
following advantages:
1 an overload on the output (even if it is perma-
nent), or an excessive ambient temperature can
be easily withstood.
2 the heatsink can have a smaller factor of safety
compared with that of a conventional circuit.
There is no device damage in the case of exces-
sive junction temperature; all that happens is
that P
O
(and therefore P
O
) and I
O
are reduced.
Short Circuit (AC Conditions)
The TDA7263SA can withstand accidental short
circuits across the speaker made by a wrong con-
nection during normal play operation.
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TDA7263SA
HEAT SINK DIMENSIONING:
In order to avoid the thermal protection intervention, that is placed approximatively at T
j
= 150C, it is important
the dimensioning of the Heat Sinker R
Th
(C/W).
The parameters that influence the dimensioning are:
Maximum dissipated power for the device (P
dmax
)
Max thermal resistance Junction to case (R
Th j-c
)
Max. ambient temperature T
amb max
Quiescent current I
q
(mA)
Example:
V
CC
= 28V, R
load
= 8ohm, R
Th j-c
= 3.5 C/W , T
amb max
= 50C
P
dmax
= (N channels)
P
dmax
= 2 ( 4.9 ) + 1.9 = 11.3W
(Heat Sinker)
In figure 8 is shown the Power derating curve for the device.
Figure 8. Power derating curve
V
cc
2
2
2
R
lo ad
------------------------------
I
q
V
cc
+
R
Th c-a
150
T
a mb max
P
d max
-----------------------------------------
R
Th j-c
150
50
11.3
----------------------
3.5
5.3
C/W
=
=
=
a)
Infinite Heatsink
b)
5.0 C/ W
c)
7.0 C/ W
(c)
(a)
(b)
0
5
10
15
20
25
30
0
40
80
120
160
Tamb (C)
Pd
(
W
)
a)
Infinite Heatsink
b)
5.0 C/ W
c)
7.0 C/ W
(c)
(a)
(b)
0
5
10
15
20
25
30
0
40
80
120
160
Tamb (C)
Pd
(
W
)
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