ST TDA7269A User Manual
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TDA7269A
June 2003
■ WIDE SUPPLY VOLTAGE RA NGE UP TO
+20V
■ SPLIT SUPPLY
■ HHIGH OUTPUT POWER 14+14W
@THD = 10%, R
L
= 8Ω, V
S
= ±16V
■ NO POP AT TURN-ON/OFF
■ MUTE (POP FREE)
■ STAND-BY FEATURE (LOW I
q
)
■ SHORT CIRCUIT PROTECTION TO GND
■ THERMAL OVERLOAD PROTECTION
DESCRIPTION
The TDA7269A is class AB Dual Audio Power ampli-
fier assembled in the Multiwatt package, specially de-
signed for high quality sound application as Hi-Fi
music centers and stereo TV sets.
Multiwatt11
ORDERING NUMBER: TDA7269A
14W+14W STEREO AMPLIFIER WITH MUTE & ST-BY
Figure 1. Typical Application Circuit
+5V
18K15K
IN (L)
1µF
15K 1µF
MUTE/
ST-BY
GND
IN (R)
1µF
4.7Ω
4.7Ω
100nF
100nF
OUT (L)
OUT (R)
1000µF
1000µF
+V
S
3
5
7
9
6
11
2
4
+
+
-
-
D94AU085
RL (L)
RL (R)
-V
S
µP
560Ω
18K
IN- (L)
8
10 IN- (R)
1
560Ω
18K
TDA7269A
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ABSOLUTE MAXIMUM RATINGS
PIN CONNECTION
(Top view)
THERMAL DATA
Figure 2. Sin gl e Su pply Applicati on
Symbol Parameter Value Unit
V
S
DC Supply Voltage ±22 V
I
O
Output Power Current (internally limited) 3 A
P
tot
Total Power Dissipation (Tamb = 70°C) 40 W
T
op
Operating Temperature 0 to 70 °C
T
stg
, T
j
Storage and Junction Temperature -40 to 150 °C
Symbol Parameter Value Unit
R
th j-case
Thermal Resistance Junction-case Max. 2.8 °C/W
1
2
3
4
5
6
7
9
10
11
8
IN+(1)
IN-(1)
GND
IN-(2)
IN+(2)
-V
S
MUTE
OUTPUT(2)
+V
S
OUTPUT(1)
-V
S
TAB CONNECTED TO PIN 6
D95AU316
PLAY
5V
R2
15K
IN (L)
C3 1µF
R1
10K
C1
1µF
MUTE
IN (R)
C4 1µF
R8
4.7Ω
R7
1K
C7
0.1µF
OUT (L)
OUT (R)
C5
1000µF
+V
S
3
5
7
9
6
11
2
4
+
+
-
-
D96AU444A
OUT
(L)
OUT
(R)
GND
R4
30K
IN- (L)
8
10
IN- (R)
1
R5
1K
R6
30K
R9
4.7Ω
C9 470µF
C10 470µF
C8
0.1µF
R3
15K
0
MUTE
Q1
BSX33
C6
0.1µF
D1 5.1V
C2
100µF
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TDA7269A
ELECTRICAL CHARACTERISTCS
(Refer to the test circuit V
S
= ±16V; R
L
= 8
Ω
; R
S
= 50
Ω;
G
V
= 30dB,
f = 1KHz; T
amb
= 25°C, unless otherwise specified)
(*) In mute c ondition the current drawn fr om Pin 5 must be ≤650µA
Symbol Parameter Test Condition Min. Typ. Max. Unit
V
S
Supply Voltage Range R
L
= 8Ω ±5 ±20 V
R
L
= 4Ω ±5 ±15 V
I
q
Total Quiescent Current 60 100 mA
V
OS
Input Offset Voltage -25 25 mV
I
b
Non Inverting Input Bias Current 500 nA
P
O
Output Power THD = 10%;
R
L
= 8Ω;
V
S
= ±12.5V; R
L
= 4Ω;
12
8
14
10
W
W
THD = 1%;
R
L
= 8Ω;
V
S
= ±12.5V; R
L
= 4Ω;
9
6
11
7.5
W
W
THD Total Harmonic Distortion R
L
= 8Ω; P
O
= 1W; f = 1KHz; 0.03 %
R
L
= 8Ω; P
O
= 0.1 to 7W;
f = 100Hz to 15KHz;
0.7 %
R
L
= 4Ω; P
O
= 1W; f = 1KHz; 0.02 %
R
L
= 4Ω; V
S
= ±10V;
P
O
= 0.1 to 5W;
f = 100Hz to 15KHz;
1%
C
T
Cross Ta lk f = 1KHz;
f = 10KHz; 50
70
60
dB
dB
SR Slew Rate 6.5 10 V/µs
G
OL
Open Loop Voltage Gain 80 dB
e
N
Total Output Noise A Curve
f = 20Hz to 22KHz
3
48
µV
µV
R
i
Input Resistance 15 20 KΩ
SVR Supply Voltage Rejection
(each channel)
f = 100Hz; V
R
= 0.5V 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
MUTE
Mute Attenuation 60 70 dB
STAND-BY FUNCTIONS [ref: +V
S
] (only for Split Supply)
VT
ST-BY
Stand-by Mute threshold -3.5 -2.5 -1.5 V
A
ST-BY
Stand-by Attenuation 110 dB
I
qST-BY
Quiescent Current @ Stand-by 3 6 mA
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