STMICROELECTRONICS TDA7269A

TDA7269A

14 + 14W STEREO AMPLIFIER WITH MUTE & ST-BY
WIDE SUPPLY VOLTAGE RANGE UP TO
±20V
SPLIT SUPPLY
HIGH OUTPUT POWER
14 + 14W @ THD =10%, RL = 8Ω, VS = +16V
NO POP AT TURN-ON/OFF
MUTE (POP FREE)
STAND-BY FEATURE (LOW Iq)
SHORT CIRCUIT PROTECTION TO GND
THERMAL OVERLOAD PROTECTION
Multiwatt11
ORDERING NUMBER: TDA7269A
DESCRIPTION
The TDA7269A is class AB dual Audio power amplifier assembled in the Multiwatt package, specially designed for high quality sound application
as Hi-Fi music centers and stereo TV sets.
Figure 1: Typical Application Circuit
+VS
15K
1000µF
1µF
MUTE/
ST-BY
IN (L)
3
5
7
+
15K
+5V
4
OUT (L)
8
IN- (L)
-
1µF
18K
GND
18K
9
4.7Ω
RL (L)
100nF
560Ω
µP
10
IN- (R)
560Ω
18K
1µF
IN (R)
11
-
2
+
1
6
-VS
OUT (R)
4.7Ω
RL (R)
100nF
1000µF
D94AU085
July 1998
1/7
TDA7269A
ABSOLUTE MAXIMUM RATINGS
Symbol
Parameter
Value
Unit
±22
V
VS
DC Supply Voltage
IO
Output Peak Current (internally limited)
3
A
Ptot
Power Dissipation T case = 70°C
40
W
Top
Operating Temperature
0 to 70
°C
-40 to +150
°C
Tstg, Tj
Storage and Junction Temperature
PIN CONNECTION (Top view)
11
IN+(1)
10
IN-(1)
9
GND
8
IN-(2)
7
IN+(2)
6
-VS
5
MUTE
4
OUTPUT(2)
3
+VS
2
OUTPUT(1)
1
-VS
TAB CONNECTED TO PIN 6
D95AU316
THERMAL DATA
Symbol
Description
Thermal Resistance Junction-case
Rth j-case
Max
Value
Unit
2.8
°C/W
SINGLE SUPPLY APPLICATION
+VS
D1 5.1V
R1
10K
C1
1µF
R3
15K
C5
1000µF
MUTE/ST-BY
PLAY
5V
0
MUTE
R2
15K
C2
100µF
IN (L)
Q1
BSX33
3
5
7
+
4
OUT (L)
8
IN- (L)
-
C3 1µF
9
C4 1µF
IN (R)
11
C6
0.1µF
C9 470µF
R4
30K
R5
1K
+
2
IN- (R)
R8
4.7Ω
C7
0.1µF
OUT
(L)
C10 470µF
10
1
6
GND
OUT (R)
R6
30K
R7
1K
R9
4.7Ω
C8
0.1µF
D96AU444
2/7
OUT
(R)
TDA7269A
ELECTRICAL CHARACTERISTICS (Refer to the test circuit, VS = + 16V; RL = 8Ω; RS = 50Ω;
GV = 30dB; f = 1KHz; Tamb = 25°C, unless otherwise specified.)
Symbol
VS
Iq
VOS
Parameter
Supply Range
Min.
Non Inverting Input Bias Current
Output Power
Total Harmonic Distortion
+15
V
100
mA
+25
mV
60
–25
THD = 10%
R L = 8Ω ;
VS + 12.5V; RL = 4Ω
THD = 1%
R L = 8Ω ;
VS + 12.5V; RL = 4Ω
500
nA
12
8
14
10
W
W
9
6
11
7.5
W
W
R L = 8Ω ; PO = 1W; f = 1KHz
0.03
SR
Slew Rate
Open Loop Voltage Gain
eN
Total Input Noise
Ri
Input Resistance
SVR
Tj
Supply Voltage Rejection
(each channel)
f = 1KHz
f = 10KHz
0.02
%
%
1
%
50
70
60
dB
dB
6.5
10
V/µs
A Curve
f = 20Hz to 22KHz
15
fr = 100Hz
%
0.7
R L = 4Ω ; VS + 10V;
PO = 0.1 to 5W;
f = 100Hz to 15KHz
GOL
V
+20
+5
R L = 4Ω ; PO = 1W; f = 1KHz
Cross Talk
Unit
+5
R L = 8Ω ;
PO = 0.1 to 7W;
f = 100Hz to 15KHz
CT
Max.
R L = 8Ω ;
Input Offset Voltage
Ib
Typ.
R L = 4Ω ;
Total Quiescent Current
PO
THD
Test Condition
Vr = 0.5V
Thermal Shut-down
Junction Temperature
80
dB
3
4
µV
µV
8
20
KΩ
60
dB
145
°C
MUTE FUNCTION [ref: +VS] (*)
VTMUTE
AM
Mute / Play Threshold
-7
-6
Mute Attenuation
60
70
-5
V
dB
STAND-BY FUNCTION [ref: +V S] (Only for Split Supply)
VTST-BY
Stand-by / Mute Threshold
AST-BY
Stand-by Attenuation
Iq ST-BY
Quiescent Current @ Stand-by
-3.5
-2.5
-1.5
110
3
V
dB
6
mA
(*) In mute condition the current drawn from pin 5 must be ≤ 650µA.
3/7
TDA7269A
- when Vpin5 is between +VS - 2.5V and +VS
- 6V the final stage current generators are
switched on and the amplifier is in mute
mode
- when Vpin5 is lower than +VS - 6V the amplifier is play mode.
MUTE STAND-BY FUNCTION
The pin 5 (MUTE/STAND-BY) controls the amplifier status by two different thresholds, referred to
+VS.
- When Vpin5 higher than = +VS - 2.5V the
amplifier is in Stand-by mode and the final
stage generators are off
Figure 2
+VS
(V)
20
t
-VS
-20
VIN
(mV)
Vpin5
(V)
VS
VS-2.5
VS-6
VS-10
Iq
(mA)
0
VOUT
(V)
OFF
PLAY
STDBY
PLAY
OFF
STDBY
STDBY
MUTE
4/7
D94AU086
MUTE
MUTE
MUTE
TDA7269A
Figure 3: Test and Application Circuit (Stereo Configuration)
+VS
R2
C3
MUTE/
ST-BY
R1
SW1
IN (L)
7
R4
C5
3
5
+
4
OUT (L)
8
IN- (L)
-
C1
DZ
C4
+VS
R7
R5
RL (L)
C8
R3
GND
9
R6
SW2
10
R9
IN- (R)
R8
C2
IN (R)
11
-
2
OUT (R)
+
1
R10
6
-VS
C7
RL (R)
C9
C6
D94AU087
APPLICATIONS SUGGESTION
(Demo Board Schematic)
The recommended values of the external compo-
nents are those shown are the demo board schematic different values can be used: the following
table can help the designer.
COMPONENTS
RECOMMENDED
VALUE
R1
10KΩ
Mute Circuit
Increase of Dz
Biasing Current
R2
15KΩ
Mute Circuit
Vpin # 5 Shifted Downward
Vpin # 5 Shifted Upward
R3
18KΩ
Mute Circuit
Vpin # 5 Shifted Upward
Vpin # 5 Shifted Downward
R4
15KΩ
Mute Circuit
Vpin # 5 Shifted Upward
Vpin # 5 Shifted Downward
R5, R8
18KΩ
560Ω
Closed Loop Gain
Setting (*)
Increase of Gain
R6, R9
R7, R10
4.7Ω
Frequency Stability
Danger of Oscillations
C1, C2
1µF
Input DC
Decoupling
C3
1µF
St-By/Mute Time
Constant
C4, C6
1000µF
Supply Voltage
Bypass
Danger of Oscillations
C5, C7
0.1µF
Supply Voltage
Bypass
Danger of Oscillations
C8, C9
0.1µF
Frequency Stability
Dz
5.1V
Mute Circuit
PURPOSE
LARGER THAN
RECOMMENDED VALUE
SMALLER THAN
RECOMMENDED VALUE
Decrease of Gain
Danger of Oscillations
Higher Low Frequency
Cutoff
Larger On/Off Time
Smaller On/Off Time
(*) Closed loop gain has to be => 25dB
5/7
TDA7269A
MULTIWATT11 PACKAGE MECHANICAL DATA
DIM.
mm
MIN.
TYP.
MIN.
TYP.
MAX.
A
5
B
2.65
0.104
C
1.6
0.063
D
0.197
1
E
0.49
0.039
0.55
0.019
0.022
F
0.88
0.95
0.035
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
19.6
0.037
0.772
H2
6/7
inch
MAX.
20.2
0.795
L
21.5
22.3
0.846
0.878
L1
21.4
22.2
0.843
0.874
L2
17.4
18.1
0.685
0.713
L3
17.25
17.5
17.75
0.679
0.689
L4
10.3
10.7
10.9
0.406
0.421
L7
2.65
2.9
0.104
0.699
0.429
0.114
M
4.1
4.3
4.5
0.161
0.169
0.177
M1
4.88
5.08
5.3
0.192
0.200
0.209
S
1.9
2.6
0.075
0.102
S1
1.9
2.6
0.075
0.102
Dia1
3.65
3.85
0.144
0.152
TDA7269A
Information furnished is believed to be accurate and reliable. However, STMicroelectronics assumes no responsibility for the consequences
of use of such information nor for any infringement of patents or other rights of third parties which may result from its use. No license is
granted by implication or otherwise under any patent or patent rights of STMicroelectronics. Specification mentioned in this publication are
subject to change without notice. This publication supersedes and replaces all information previously supplied. STMicroelectronics products
are not authorized for use as critical components in life support devices or systems without express written approval of STMicroelectronics.
The ST logo is a registered trademark of STMicroelectronics
 1998 STMicroelectronics – Printed in Italy – All Rights Reserved
STMicroelectronics GROUP OF COMPANIES
Australia - Brazil - Canada - China - France - Germany - Italy - Japan - Korea - Malaysia - Malta - Mexico - Morocco - The Netherlands Singapore - Spain - Sweden - Switzerland - Taiwan - Thailand - United Kingdom - U.S.A.
7/7