TDA7269
10 + 10W STEREO AMPLIFIER WITH MUTE & ST-BY
WIDE SUPPLY VOLTAGE RANGE UP TO
20V
SPLIT SUPPLY
HIGH OUTPUT POWER
10 + 10W @ THD =10%, R
L
= 8
, V
S
= +14V
NO POP AT TURN-ON/OFF
MUTE (POP FREE)
STAND-BY FEATURE (LOW I
q
)
THERMAL OVERLOAD PROTECTION
SHORT CIRCUIT PROTECTION TO GND
DESCRIPTION
The TDA7269 is class AB dual Audio power am-
plifier assembled in the Multiwatt package, spe-
cially designed for high quality sound application
as Hi-Fi music centers and stereo TV sets.
July 1998
Multiwatt11
ORDERING NUMBER: TDA7269
+5V
18K
15K
IN (L)
1
F
15K
1
F
MUTE/
ST-BY
GND
IN (R)
1
F
4.7
4.7
100nF
100nF
OUT (L)
OUT (R)
1000
F
1000
F
+V
S
3
5
7
9
6
11
2
4
+
+
-
-
D94AU085
RL (L)
RL (R)
-V
S
P
560
18K
IN- (L)
8
10
IN- (R)
1
560
18K
Figure 1: Typical Application Circuit
1/7
ABSOLUTE MAXIMUM RATINGS
Symbol
Parameter
Value
Unit
V
S
DC Supply Voltage
22
V
I
O
Output Peak Current (internally limited)
3
A
P
tot
Power Dissipation T
case
= 70
C
40
W
T
op
Operating Temperature
0 to 70
C
T
stg
, T
j
Storage and Junction Temperature
-40 to +150
C
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
PIN CONNECTION (Top view)
THERMAL DATA
Symbol
Description
Value
Unit
R
th j-case
Thermal Resistance Junction-case
Max
2.8
C/W
PLAY
5V
R2
15K
IN (L)
C3 1
F
R1
10K
C1
1
F
MUTE/ST-BY
IN (R)
C4 1
F
R8
4.7
R7
1K
C7
0.1
F
OUT (L)
OUT (R)
C5
1000
F
+V
S
3
5
7
9
6
11
2
4
+
+
-
-
D96AU444
OUT
(L)
OUT
(R)
GND
R4
30K
IN- (L)
8
10
IN- (R)
1
R5
1K
R6
30K
R9
4.7
C9 470
F
C10 470
F
C8
0.1
F
R3
15K
0
MUTE
Q1
BSX33
C6
0.1
F
D1 5.1V
C2
100
F
SINGLE SUPPLY APPLICATION
TDA7269
2/7
ELECTRICAL CHARACTERISTICS (Refer to the test circuit, V
S
= + 14V; R
L
= 8
; R
S
= 50
;
G
V
= 30dB; f = 1KHz;
T
amb
= 25
C, unless otherwise specified.)
Symbol
Parameter
Test Condition
Min.
Typ.
Max.
Unit
V
S
Supply Range
+5
+20
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
= 8
;
V
S
+ 12.5V; R
L
= 4
8
7.5
10
10
W
W
THD = 1%
R
L
= 8
;
V
S
+ 12.5V; R
L
= 4
7.5
7.5
W
W
THD
Total Harmonic Distortion
R
L
= 8
; P
O
= 1W; f = 1KHz
0.03
%
R
L
= 8
;
P
O
= 0.1 to 5W;
f = 100Hz to 15KHz
0.7
%
R
L
= 4
; P
O
= 1W; f = 1KHz
0.02
%
R
L
= 4
; V
S
+ 10V;
P
O
= 0.1 to 5W;
f = 100Hz to 15KHz
1
%
C
T
Cross Talk
f = 1KHz
f = 10KHz
50
70
60
dB
dB
SR
Slew Rate
6.5
10
V/
s
G
OL
Open Loop Voltage Gain
80
dB
e
N
Total Input Noise
A Curve
f = 20Hz to 22KHz
3
4
8
V
V
R
i
Input Resistance
15
20
K
SVR
Supply Voltage Rejection
(each channel)
fr = 100Hz
Vr = 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
M
Mute Attenuation
60
70
dB
STAND-BY FUNCTION [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
q ST-BY
Quiescent Current @ Stand-by
3
6
mA
(*) In mute condition the current drawn from Pin 5 must be
650
A.
TDA7269
3/7
MUTE STAND-BY FUNCTION
The pin 5 (MUTE/STAND-BY) controls the ampli-
fier status by two different thresholds, referred to
+V
S
.
- When V
pin5
higher than = +V
S
- 2.5V the
amplifier is in Stand-by mode and the final
stage generators are off
- when V
pin5
is between +V
S
- 2.5V and +V
S
- 6V the final stage current generators are
switched on and the amplifier is in mute
mode
- when V
pin5
is lower than +V
S
- 6V the am-
plifier is play mode.
t
OFF
STDBY
MUTE
MUTE
MUTE
MUTE
PLAY
STDBY
PLAY
OFF
STDBY
20
+V
S
(V)
-20
-V
S
V
IN
(mV)
Vpin5
(V)
V
S
V
S
-2.5
V
S-
6
V
S
-10
I
q
(mA)
0
VOUT
(V)
D94AU086
Figure 2
TDA7269
4/7
APPLICATIONS SUGGESTION
(Demo Board Schematic)
The recommended values of the external compo-
nents are those shown are the demo board sche-
matic different values can be used: the following
table can help the designer.
R3
IN (L)
C1
R2
C3
MUTE/
ST-BY
GND
IN (R)
C2
R7
R10
C8
C9
OUT (L)
OUT (R)
C6
C4
+V
S
3
5
7
9
6
11
2
4
+
+
-
-
D94AU087
RL (L)
RL (R)
+V
S
-V
S
R9
R5
IN- (L)
8
10
IN- (R)
1
SW1
R1
DZ
R4
SW2
C7
R8
R6
C5
Figure 3: Test and Application Circuit (Stereo Configuration)
COMPONENTS
RECOMMENDED
VALUE
PURPOSE
LARGER THAN
RECOMMENDED VALUE
SMALLER THAN
RECOMMENDED VALUE
R1
10K
Mute Circuit
Increase of Dz
Biasing Current
R2
15K
Mute Circuit
V
pin
# 5 Shifted Downward
V
pin
# 5 Shifted Upward
R3
18K
Mute Circuit
V
pin
# 5 Shifted Upward
V
pin
# 5 Shifted Downward
R4
15K
Mute Circuit
V
pin
# 5 Shifted Upward
V
pin
# 5 Shifted Downward
R5, R8
18K
Closed Loop Gain
Setting (*)
Increase of Gain
R6, R9
560
Decrease of Gain
R7, R10
4.7
Frequency Stability
Danger of Oscillations
Danger of Oscillations
C1, C2
1
F
Input DC
Decoupling
Higher Low Frequency
Cutoff
C3
1
F
St-By/Mute Time
Constant
Larger On/Off Time
Smaller On/Off Time
C4, C6
1000
F
Supply Voltage
Bypass
Danger of Oscillations
C5, C7
0.1
F
Supply Voltage
Bypass
Danger of Oscillations
C8, C9
0.1
F
Frequency Stability
Dz
5.1V
Mute Circuit
(*) Closed loop gain has to be => 25dB
TDA7269
5/7
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