1/7
TDA7497S
June 2002
■
8+8W (RL = 8
Ω
) + 15W ( RL = 4
Ω
)
OUTPUT POWER @THD = 10%, Vcc = 25V
■
INDEPENDENT MUTE FOR CENTER
CHANNEL AND MAIN CHANNELS
■
NO TURN-ON TURN-OFF POP NOISE
■
NO BOUCHEROT CELL
■
SINGLE SUPPLY RANGING UP TO 35V
■
SHORT CIRCUIT PROTECTION
■
THERMAL OVERLOAD PROTECTION
■
INTERNALLY FIXED GAIN
■
SOFT CLIPPING
■
MULTIWATT 15 PACKAGE
DESCRIPTION
The TDA7497S is a triple 8+8+15W class AB power
amplifier assembled in the @ Multiwatt 15 package,
specially designed for high quality sound, TV applica-
tions.
Features of the TDA7497S include mute functions,
independently controller for main and center chan-
nels.
Multiwatt15
ORDERING NUMBER: TDA7497S
8W+8W+15W TRIPLE AMPLIFIER
BLOCK DIAGRAM
OP AMP
+
-
MUTE
PROTECTIONS
1
470nF
C1
C11
0.1
µ
F
C2
C3
C4
INR
30K
OP AMP
+
-
30K
C10
0.1
µ
F
C9
1000
µ
F
C8 1000
µ
F
C6 1000
µ
F
C7
1
µ
F
10K R1
10K R2
5
470nF
INL
8
S_GND
14
9
10
12
OUTR
MUTE2
MUTE1
OUTL
11
PW_GND
470
µ
F
SVR
7
D98AU961B
V
S
PW_GND
15
13
S1 MUTE2
(CENTER)
+5V
+V
S
S2 MUTE1
(L/R)
+5V
S_GND
60K
C12 1
µ
F
OP AMP
+
-
30K
1000
µ
F
C5
6
470nF
INC
3
OUTC
4
PW_GND_C
V
S_C
2
MULTIPOWER BI50II TECHNOLOGY
TDA7497S
2/7
ABSOLUTE MAXIMUM RATINGS
(1) Operation between -20 to 85
°
C guaranteed by correlation with 0 to 70
°
C.
PIN CONNECTION (Top view)
THERMAL DATA
Symbol
Parameter
Value
Unit
V
S
DC Supply Voltage
35
V
P
tot
Total Power Dissipation (Tamb = 70
°
C)
20
W
T
amb
Ambient Operating Temperature (1)
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
Typ.=1.3 max = 1.9
°
C/W
R
th j-amb
Thermal Resistance Junction-ambient
max = 35
°
C/W
1
2
3
4
5
6
7
9
10
11
8
PW_GND
MUTE1 (L/R)
MUTE2 (CENTER)
S_GND
SVR
INC
INL
PW_GND_C
OUTC
V
S_C
INR
13
14
15
12
PW_GND
OUTR
V
S
OUTL
D98AU962A
3/7
TDA7497S
ELECTRICAL CHARACTERISTCS (Refer to the test circuit V
S
= 25V; R
g
= 50
Ω
, T
amb
= 25
°
C)
Symbol
Parameter
Test Condition
Min.
Typ.
Max.
Unit
V
S
Supply Voltage Range
11
30
V
I
q
Total Quiescent Current
60
100
mA
V
O
Quiescent Output Voltage
11.5
12.5
13.5
V
P
O_L/R
Output Power Left /
RightChannels
THD = 10%; RL = 8
Ω
;
THD = 1%; RL = 8
Ω
;
6
5
8
6
W
W
P
O_C
Output Power Center Channel
THD = 10%; RL = 4
Ω
THD = 1%; RL = 4
Ω
12
10
15
12
W
W
THD
Total Harmonic Distortion
PO = 1W; f = 1KHz;
0.4
%
I
peak L/R
Output Peak Current
(internally limited)
2.0
A
I
peak C
Output Peak Current Central
Channel
(internally limited)
2.5
A
GV
Closed Loop Gain
28.5
29.5
30.5
dB
∆
GV
L/R Voltage GainMatching
-1
1
dB
BW
0.6
MHz
e
N
Total Output Noise
f = 20Hz to 22KHz
60
150
µ
V
SR
Slew Rate
5
8
V/
µ
s
R
i
Input Resistance
22.5
30
K
Ω
SVR
Supply Voltage Rejection
f = 1kHzCSVR = 470mF; VRIP =
1Vrms
50
60
dB
T
M
Thermal Muting
150
°
C
T
s
Thermal Shut-down
160
°
C
MUTE & INPUT SELECTION FUNCTIONS
V
MUTE1
Mute 1 ON threshold (L/R)
3.5
V
Mute 1 OFF threshold (L/R)
1.5
V
V
MUTE2
Mute 2 ON Threshold (center)
3.5
V
Mute 2 OFF Threshold (center)
1.5
V
A
MUTE
Mute Attenuation
50
65
dB
I
muteBIAS
Mute bias current Mute1/Mute2
Mute
1
5
mA
Play
0.2
2
mA
TDA7497S
4/7
Figure 1. PC Boar and Component Layout
5/7
TDA7497S
Figure 2. Output Power vs Supply Voltage
Figure 3. Frequency Response
Figure 4. THD+N vs Output Power
Figure 5. Pdiss vs Output Power
0
2
4
6
8
10
W
+10
+12
+14
+16
+18
+20
+22
+24
Vdc
TDA7497
Rl = 80hm
f = 1KHz
THD=10%
THD=1%
Pout vs Vcc : RL=8ohm, F=1KHz (filter 22Hz-22KHz),
THD= 1%, 10%, channels L/R/C
+25
-5
+5l
-4
-3
-2
-1
+0
+1
+2
+3
+4
20
100k
50
100
200
500
1k
2k
5k
10k
20k
50k
Amp.
(dB)
Frequency( Hz )
TDA7497
Vcc=25Vdc
Rl =8ohm
0dB = 1W
T.H.D.
(%)
0.01
10
0.02
0.05
0.1
0.2
0.5
1
2
5
60m
10
100m
200m
500m
1
2
5
TDA7497
Vcc=26Vdc
Rl = 8ohm
f = 1KHz
0
5
10
15
20
25
30
9
10
11
12
13
14
15
16
Pdiss. (W)helv
TDA7497
Vcc= 26V
Right/Left/Center=8 ohm
X axisis 3XPout
Pout. (W)
TDA7497S
6/7
Multiwatt15 V
DIM.
mm
inch
MIN.
TYP.
MAX.
MIN.
TYP.
MAX.
A
5
0.197
B
2.65
0.104
C
1.6
0.063
D
1
0.039
E
0.49
0.55
0.019
0.022
F
0.66
0.75
0.026
0.030
G
1.02
1.27
1.52
0.040
0.050
0.060
G1
17.53
17.78
18.03
0.690
0.700
0.710
H1
19.6
0.772
H2
20.2
0.795
L
21.9
22.2
22.5
0.862
0.874
0.886
L1
21.7
22.1
22.5
0.854
0.870
0.886
L2
17.65
18.1
0.695
0.713
L3
17.25
17.5
17.75
0.679
0.689
0.699
L4
10.3
10.7
10.9
0.406
0.421
0.429
L7
2.65
2.9
0.104
0.114
M
4.25
4.55
4.85
0.167
0.179
0.191
M1
4.63
5.08
5.53
0.182
0.200
0.218
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
OUTLINE AND
MECHANICAL DATA
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. Specifications 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
2002 STMicroelectronics - All Rights Reserved
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TDA7497S