SGS Thomson Microelectronics TDA7264A, TDA7264 Datasheet
TDA7264
25 + 25W STEREO AMPLIFIER WITH MUTE/ST-BY
WIDE SUPPLY VOLTAGE RANGE (UP TO
50V ABSMAX.)
SPLIT SUPPLY
HIGHOUTPUTPOWER:
25 + 25W @ THD =10%, R
NO POPAT TURN-ON/OFF
MUTE(POP FREE)
STAND-BY FEATURE (LOWI
FEWEXTERNALCOMPONENTS
SHORTCIRCUITPROTECTION
THERMALOVERLOAD PROTECTION
DESCRIPTION
The TDA7264/TDA7264A is class AB dual Audio
power amplifier assembled in the Multiwatt package, speciallydesigned for high quality sound ap-
=8Ω,VS= +20V
L
Q)
TDA7264A
Multiwatt 8 Multiwatt 11
ORDERING NUMBER: TDA7264 (Multiwatt 8)
TDA7264A (Multiwatt 11)
plication as Hi-Fi music centers and stereo TV
sets.
Figure 1: Typical ApplicationCircuit for TDA7264
+5V
15K 1µF
µP
1µF
1µF
MUTE/
ST-BY
IN (L)
18K15K
GND
IN (R)
D94AU069A
4
6
7
8
-
-
+
1000µF
+V
S
OUT (L)
4.7Ω
OUT (R)
4.7Ω
1000µF
RL (L)
100nF
RL (R)
100nF
+V
2
5
-V
S
3+
1
S
April 1999
1/12
TDA7264 - TDA7264A
Figure 2: Typical ApplicationCircuit for TDA7264A
+V
S
1000µF
OUT (L)
4.7Ω
100nF
OUT (R)
4.7Ω
100nF
+5V
15K 1µF
µP
1µF
1µF
MUTE/
ST-BY
IN (L)
18K15K
GND
IN (R)
D98AU955
5
7
9
11
-
-
+
1
1000µF
3
4+
2
6
-V
S
ABSOLUTE MAXIMUM RATINGS
Symbol Parameter Value Unit
V
I
O
P
tot
T
stg,Tj
DC Supply Voltage 50 V
S
Output Peak Current (internally limited) 4.5 A
Power Dissipation T
=70°C30W
case
Storage and Junction Temperature -40 to +150 °C
RL (L)
RL (R)
PIN CONNECTION (Topview)
Tab connected to pin 5
Multiwatt 8
8 IN (1)
7
6
5
4
3
2
1
D94AU096
GND
IN (2)
-V
S
MUTE/ST-BY
OUTPUT (2)
+V
S
OUTPUT (1)
TAB CONNECTEDTOPIN 6
Multiwatt 11
11
10
9
8
7
6
5
4
3
2
1
D98AU956
IN(1)
NOT CONNECTED
GND
NOT CONNECTED
IN(2)
-V
S
STBY/MUTE
OUTPUT(2)
+V
S
OUTPUT(1)
-V
S
THERMAL DATA
Symbol Description Value Unit
Thermal Resistance Junction-case Max 2
2/12
R
th j-case
C/W
°
TDA7264 - TDA7264A
ELECTRICALCHARACTERISTICS (Refer to the test circuit, VS+ 20V; RL=8Ω;Rs=50Ω;
f = 1KHz; T
Symbol Parameter Test Condition Min. Typ. Max. Unit
V
S
I
q
P
O
P
O
THD Total Harmonic Distortion R
C
T
SR Slew Rate 10 V/µs
G
V
∆G
V
e
N
R
i
SVR Supply Voltage Rejection
T
j
MUTE FUNCTION [ref: +V
VT
MUTE
A
M
STAND-BY FUNCTION [ref:+V
VT
ST-BY
A
ST-BY
I
q ST-BY
Note :
(*) FULL POWER up to.V
MUSIC POWER is the maximal power which the amplifier is capable of producing across theratedloadresistance (regardless of non linearity)
1 sec after the application of a sinusoidal input signal of frequency 1KHz.
=25°C, unless otherwise specified.)
amb
Supply Range +5 +22.5 V
Total Quiescent Current 80 130 mA
Music Output Power (*) THD = 10%; RL=8Ω ;
V
+ 22.5V
S
32 W
Output Power THD = 10%
R
=8Ω ;
L
V
+ 16V; RL=4
S
Ω
20 25
25
THD = 1%
R
=8Ω ;
L
V
+ 16V; RL=4
S
=8Ω ;PO= 1W; f = 1KHz 0.02 %
L
=8Ω ;
R
L
P
= 0.1 to 15W;
O
Ω
20
20
0.5 %
f = 100Hz to 15KHz
R
=4Ω;PO= 1W; f = 1KHz 0.03 %
L
=4Ω ;VS+ 16V;
R
L
P
= 0.1 to 12W;
O
1%
f = 100Hz to 15KHz
Cross Talk f = 1KHz
f = 10KHz
70
60
Closed Loop Voltage Gain 29 30 31 dB
Voltage Gain Matching 0.2 dB
Total Input Noise A Curve
f = 20Hz to 22KHz
2.5
3.5 8
Input Resistance 15 20 KΩ
fr = 100Hz; Vripple= 0.5V
RMS
60 dB
(each channel)
Thermal Shut-down
145
Junction Temperature
S]
Mute / PlayThreshold -7 -6 -5 V
Mute Attenuation 60 90 dB
]
S
Stand-by / Mute Threshold -3.5 -2.5 -1.5 V
Stand-by Attenuation 110 dB
Quiescent Current@ Stand-by 3 mA
=±22.5V with RL=8Ωand VS= ±16V with RL=4Ω
S
W
W
W
W
dB
dB
µV
µ
°
V
C
3/12
TDA7264 - TDA7264A
Figure 3: Demo Board Schematic TDA7264
R2
C3
1µF
R4
15K
SW2
MUTE
C1 1µF
MUTE/
ST-BY
IN (L)
R3
18K
GND
SW1
ST-BY
R1
15K
Q1
DZ
+V
S
+V
S
4
6
-
7
2
3+
C4
1000µF
OUT (L)
R5
4.7Ω
C8
100nF
C5
100nF
RL (L)
C2 1µF
IN (R)
D94AU068B
8
-
+
C7
100nF
1
OUT (R)
5
-V
S
C6
1000µF
R6
4.7Ω
100nF
RL (R)
C9
Figure 3a: P.C.Board And ComponentLayout of the Demo Board Schematic TDA7264 (1:1 Scale)
4/12
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