tda7264a.pdf

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25 + 25W STEREO AMPLIFIER WITH MUTE/ST-BY
[
TDA7264
TDA7264A
25 + 25W STEREO AMPLIFIER WITH MUTE/ST-BY
WIDE SUPPLY VOLTAGE RANGE (UP TO
50V ABS MAX.)
SPLIT SUPPLY
HIGH OUTPUT POWER:
25 + 25W @ THD =10%, R L =8 W ,V S = +20V
NO POP AT TURN-ON/OFF
MUTE (POP FREE)
STAND-BY FEATURE (LOW I Q )
FEW EXTERNAL COMPONENTS
SHORT CIRCUIT PROTECTION
THERMAL OVERLOAD PROTECTION
Multiwatt 8
Multiwatt 11
ORDERING NUMBER: TDA7264 (Multiwatt 8)
TDA7264A (Multiwatt 11)
DESCRIPTION
The TDA7264/TDA7264A is class AB dual Audio
power amplifier assembled in the Multiwatt pack-
age, specially designed for high quality sound ap-
plication as Hi-Fi music centers and stereo TV
sets.
Figure 1: Typical Application Circuit for TDA7264
+V S
15K
1
m
F
+V S
1000
m
F
MUTE/
ST-BY
4
6
2
IN (L)
+
3
OUT (L)
1
m
F
-
4.7
W
RL (L)
100nF
15K
18K
GND
7
+5V
m
P
1
m
F
IN (R)
8
-
1
OUT (R)
+
5
4.7
W
RL (R)
-V S
1000
m
F
100nF
D94AU069A
April 1999
1/12
11041448.002.png
TDA7264 - TDA7264A
Figure 2: Typical Application Circuit for TDA7264A
+V S
1000 m F
15K
1
m
F
MUTE/
ST-BY
5
7
3
IN (L)
+
4
OUT (L)
1 m F
-
4.7
W
RL (L)
100nF
15K
18K
GND
9
+5V
m
P
1 m F
-
2
OUT (R)
IN (R)
11
+
4.7
W
1
6
RL (R)
-V S
100nF
1000 m F
D98AU955
ABSOLUTE MAXIMUM RATINGS
Symbol
Parameter
Value
Unit
V S
DC Supply Voltage
50
V
I O
Output Peak Current (internally limited)
4.5
A
P tot
Power Dissipation T case =70
°
C
30
W
T stg ,T j
Storage and Junction Temperature
-40 to +150
°
C
PIN CONNECTION (Top view)
Multiwatt 8
Multiwatt 11
11
IN(1)
NOT CONNECTED
GND
NOT CONNECTED
IN(2)
-V S
STBY/MUTE
OUTPUT(2)
+V S
OUTPUT(1)
-V S
8
IN (1)
GND
IN (2)
-V S
MUTE/ST-BY
OUTPUT (2)
+V S
OUTPUT (1)
10
7
9
6
8
7
5
6
4
5
3
4
2
3
2
1
1
Tab connected to pin 5
D94AU096
TAB CONNECTED TO PIN 6
D98AU956
THERMAL DATA
Symbol
Description
Value
Unit
R th j-case
Thermal Resistance Junction-case
Max
2
°
C/W
2/12
11041448.003.png
TDA7264 - TDA7264A
ELECTRICAL CHARACTERISTICS (Refer to the test circuit, V S + 20V; R L =8 W ;R s =50 W ;
f = 1KHz; T amb =25 ° C, unless otherwise specified.)
Symbol
Parameter
Test Condition
Min.
Typ.
Max.
Unit
V S
Supply Range
+5
+22.5
V
I q
Total Quiescent Current
80
130
mA
P O
Music Output Power (*)
THD = 10%; R L =8
W
;
32
W
V S + 22.5V
P O
Output Power
;
V S + 16V; R L =4
W
20
25
25
W
W
W
;
V S + 16V; R L =4
W
20
20
W
W
W
THD
Total Harmonic Distortion
R L =8
W
;P O = 1W; f = 1KHz
0.02
%
;
P O = 0.1 to 15W;
f = 100Hz to 15KHz
W
0.5
%
R L =4
W
;P O = 1W; f = 1KHz
0.03
%
;V S + 16V;
P O = 0.1 to 12W;
f = 100Hz to 15KHz
W
1
%
C T
Cross Talk
f = 1KHz
f = 10KHz
70
60
dB
dB
SR
Slew Rate
10
V/
m
s
G V
Closed Loop Voltage Gain
29
30
31
dB
D
G V
Voltage Gain Matching
0.2
dB
e N
Total Input Noise
A Curve
f = 20Hz to 22KHz
2.5
3.5
m
V
8
m
V
R i
Input Resistance
15
20
K
W
SVR
Supply Voltage Rejection
(each channel)
fr = 100Hz; Vripple = 0.5V RMS
60
dB
T j
Thermal Shut-down
Junction Temperature
145
°
C
MUTE FUNCTION [ref: +V S ]
VT MUTE
Mute / Play Threshold
-7
-6
-5
V
A M
Mute Attenuation
60
90
dB
STAND-BY FUNCTION [ref: +V S ]
VT ST-BY
Stand-by / Mute Threshold
-3.5
-2.5
-1.5
V
A ST-BY
Stand-by Attenuation
110
dB
I q ST-BY
Quiescent Current @ Stand-by
3
mA
W
MUSIC POWER is the maximal power which the amplifier is capable of producing across the rated load resistance (regardless of non linearity)
1 sec after the application of a sinusoidal input signal of frequency 1KHz.
±
22.5V with R L =8
W
and V S =
±
16V with R L =4
3/12
THD = 10%
R L =8
THD = 1%
R L =8
R L =8
R L =4
Note :
(*) FULL POWER up to .V S =
11041448.004.png
TDA7264 - TDA7264A
Figure 3: Demo Board Schematic TDA7264
+V S
R2
15K
C3
1
F
MUTE/
ST-BY
+V S
C4
1000
m
F
C5
100nF
4
6
2
R1
Q1
C1 1 m F
IN (L)
+
3
OUT (L)
SW1
ST-BY
-
R5
4.7 W
DZ
R4
15K
R3
18K
RL (L)
C8
100nF
GND
7
SW2
MUTE
C2 1
m
F
-
1
OUT (R)
IN (R)
8
+
5
R6
4.7
-V S
W
RL (R)
C9
100nF
C7
100nF
C6
1000 m F
D94AU068B
Figure 3a: P.C. Board And Component Layout of the Demo Board Schematic TDA7264 (1:1 Scale)
4/12
m
11041448.005.png
TDA7264 - TDA7264A
Figure 4: Demo Board Schematic TDA7264A
+V S
C4
C5
R2
C3
+V S
MUTE/
ST-BY
5
7
3
R1
Q1
IN (L)
+
4
OUT (L)
SW1
C1
-
ST-BY
DZ
R7
RL (L)
C8
R4
R3
GND
9
SW2
MUTE
C2
-
2
OUT (R)
IN (R)
11
+
R10
1
6
RL (R)
-V S
C9
C7
C6
D98AU957
Figure 4a: P.C. Board And Component Layout of the Demo Board Schematic TDA7264A (1:1 Scale)
TDA7264A
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11041448.001.png

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