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®
12 +12W STEREO AMPLIFIER WITH MUTING
WIDE SUPP LY VOLTAGE RANGE
HIGH OUTPUT POWER
12+12W @ V
MUTE FACILITY (POP FREE) WITH LOW
CONSUMPTION
AC SHORT CIRCUIT PROTECTION
THERMAL OVERLOAD PROTECTION
=28V, RL = 8Ω, THD=10%
S
TDA7263
DESCRIPTION
The TDA7263 is class AB dual audio power amplifier assembled in the new Clipwatt package,
specially designed for high quality sound application as HI-FI music centers and stereo TV sets.
TEST AND APPLICATION CIRCUIT
Clipwatt11
ORDERING NUMBER:
TDA7263
September 2003
This is advanced information on a new product now in development or undergoing evaluation. Details are subject to change without notice.
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TDA7263
ABSOLUTE MAXIMUM RATINGS
Symbol Parameter Value Unit
Supply Voltage without Load 35 V
Output Peak Current (repetitive f >20Hz) 2 A
Total Power Dissipation (T
= 70°C) 25 W
case
Operating Temperature Range 0 to 70 °C
Storage & Junction Temperature -40 to 150 °C
T
V
I
O
P
T
op
stg,Tj
S
tot
PIN CONNECTION
BLOCK DIAGRAM
(Top view)
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THERMAL DATA
Symbol Parameter Value Unit
R
th j-case
Thermal resistance junction to case Max 3 °C/W
TDA7263
ELECTRICAL CHARACTERISTICS
Gv = 30dB; f = 1KHz; T
= 25°C unless otherwise specified.)
amb
(Refer to the stereo test and application circuit, V
= 28V; R
S
Symbol Parameter Test Condition Min. Typ. Max. Unit
V
S
V
O
I
q
P
O
d Total Harmonic Distortion P
Supply Voltage 10 30 V
Quiescent Output Voltage 13.5 V
Total Quiescent Current 70 95 mA
Output Power (RMS) d = 10% Tamb = 85°C
d = 1%
= 1W, f = 1kHz
O
f = 10 0Hz to 1 0KHz ; P
O
= 0.1 to 8W
10 12
9.5
0.02 0.2
0.5
CT Cross Talk RS = 10KΩ; f = 1KHz 70 dB
= 10KΩ; f = 10KHz 60 dB
R
S
R
f
L
f
H
e
N
Input Resistance 100 200 KΩ
I
Low Frequency Roll-off (-3dB) 40 Hz
High Frequency Roll-off (-3dB) 80 KHz
Total Input Noise Voltage A Curve; RS = 10KΩ 1.5 mV
f = 22Hz to 22KHz; RS = 10KΩ 310µV
SVR Supply Voltage Rejection
= 10KΩ; f = 100Hz; Vr = 0.5V 45 60 dB
R
S
(each channel)
T
j
Thermal Shutdown Junction
145 °C
Temperature
MUTE FUNCTION
VT
VT
ATT
I
qMUTE
MUTE
PLAY
Mute Threshold 1 1.6 V
Play Threshold 4.5 V
Mute Attenuation 70 100 dB
AM
Quiescent Current @ Mute 7 10 mA
= 8
Ω;
L
W
W
%
TYPICAL CHARACTERISTICS
otherwise specified)
Figure 1:
Output Power vs. Supply Voltage
(referred to the typical Application Circuit, V
Figure 2:
Distortion vs. Output Power
= 28V, RL = 8Ω, unless
S
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TDA7263
Figure 3:
Figure 5:
Quiescent Current vs. Supply Voltage
Crosstalk vs. Frequency
Figure 4:
Figure 6:
Supply Voltage Rejection vs.
Frequency
Output Attenuation & Quiescent
Current vs. V
pin3
Figure 7:
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Total Power Dissipation vs. Output
Power
Figure 8:
Maximum allowable Power dissipation
vs. Ambient Temperature
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TDA7263
APPLICATION SUGGES TION
The recommended values of the components ar e those shown on the typical application circuit. Different
values can be used; the following table can help the designer.
Component
R1 and R3 1.5KΩ Close loop gain setting (*) Increase of gain Decrease of gain
R2 and R4 47Ω Close loop gain setting (*) Decrease of gain Increase of gain
R5 and R6 4.7Ω Frequency stability Danger of oscillations
C1 and C2 100nF Input DC decoupling Higher SVR Higher low frequency cutoff
C3 47µF - Ripple Rejection
C4 100nF Supply Voltage Bypass Danger of oscillations
C5 1000µF Supply Voltage Bypass
C6 and C7 47µF Feedback input DC
C8 and C9 0.1µF Frequency stability Danger of oscillations
C10 and C11 1000µF Output DC decoupling Higher low-frequency cut-off
(*) Closed loop gain must be higher than 26dB
Figure 9:
Recomm.
Value
- Mute time constant
decoupling
P.C. Board and Component Layout (1:1 scale)
Purpose Larger Than Smaller Than
Increase of the Switch-on
time
Increase of the Switch-on
time
- Degradation of SVR
- Worse turn-off pop by mut ing
Danger of Switch-on time
Note:
Use either C1, C2 (Polyester) or C1(*), C2(*) (Electrolytic) but not both.
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TDA7263
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 excessive junction temperature; if for any
reason the junction temperature increases up
to 145°C. the thermal shutdown simply re-
duces the output power and therefore the
power dissipation.
The maximum allowable power dissipation depends upon the thermal resistance junction-ambient. Figure 8 shows the dissipable power as a
function of ambient temperature for different
heatsink thermal resistance.
SHORT CIRCUIT (AC CONDITIONS)
The TDA7263 can withstand accidental short cir-
cuits across the speaker made by a wrong connection during normal play operation.
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TDA7263
DIM.
MIN. TYP. MAX. MIN. TYP. MAX.
A 3.2 0.126
B 1.05 0.041
C 0.15 0.006
D 1.5 0.059
E 0.49 0.55 0.019 0.002
F 0.77 0.8 0.88 0.030 0.031 0.035
F1 0.15 0.006
G 1.57 1.7 1.83 0.062 0.067 0.072
G1 16.87 17 17.13 0.664 0.669 0.674
H1 12 0.480
H2 18.6 0.732
H3 19.85 0.781
L 17.9 0.700
L1 14.55 0.580
L2 10.7 11 11.2 0.421 0.433 0.441
L3 5.5 0.217
M 2.54 0.100
M1 2.54 0.100
mm inch
OUTLINE AND
MECHANICAL DATA
Weight: 1.80gr
Clipwatt11
0044448
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TDA7263
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