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TDA7495
November 2003
■11+11W OUT PU T POWE R
R
L
= 8Ω @TH D = 10% V
CC
= 28V
■ST-BY AND M UTE FUNCTIONS
■LOW TURN-O N TURN-OFF POP NOISE
■LINEAR VOLUME CONTROL DC COUPLED
WITH POWER OP. AMP.
■NO BOUCHEROT CELL
■NO ST-BY R C INP UT NETW O RK
■SINGLE SUPPLY RANGING UP TO 35V
■SHORT CIRCUIT PROTECTION
■THERMAL OVERLOAD PROTECTION
■INTERNALLY FIXED GAIN
■SOFT CLIPPING
■VARIABLE OUTPUT AFTER VOLUME
CONTROL CIRCUIT
■MULTIWATT 15 PACKAG E
DESCRIPTION
The TDA7495 i s a stereo 11+11W class AB power
amplifier assembled in the Multiwatt 15 package,
specially designed for high quality sound, T V ap-
plications.
Features of the TDA7495 include linear volume
control, Stand-by and mute funct ions.
MULTIWATT15V
ORDERING NUMBER: TDA7495
11W+11W AMPLIFIER WITH DC VOLUME CONTROL
BLOCK AND APPLICATION DIAGRAM
VOLUME
OP AMP
+
-
MUTE/STBY
PROTECTIONS
1
470nF
INR
30K
VOLUME
OP AMP
+
-30K
1000µF
1000µF
1µF
10K
5
470nF
INL
8
S_GND
2
14
9
10
12
34
300K
100nF
VOLUME VAROUT_L
OUTR
STBY
MUTE
OUTL
11
PW_GND
470µF
SVR 7
D96AU440D
VS
VAROUT_R
PW_GND
15
13
+5V
S1 ST-BY +5V
S2 MUTE +5V
S_GND
60K
MULTIPOWER BI50II TECHNOLOGY
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ABSOLUTE MAXIMUM RATINGS
(1) O peration between -20 t o 85 °C guaranteed b y c orrela tion wit h 0 to 70°C.
PIN CONNECTION ( Top v iew)
THE RMAL DA TA
Symbol Parameter Value Unit
V
S
DC Supply Voltage 35 V
V
IN
Maximum Input Voltage 8 Vpp
P
tot
Total Power Dissipation (T
amb
= 70°C) 20 W
T
amb
Ambient Operating Temperature
(1)
-20 to 85 °C
T
stg
, T
j
Storage and Junction Temperature -40 to 150 °C
V
3
Volume CTRL DC voltage 7 V
Symbol Parameter Value Unit
R
th j-case
Thermal Resistance Junction-case Typ. = 2 Max. = 2.8 °C/W
R
th j -am b
Thermal Resistance Junction-ambient max 35 °C/W
1
2
3
4
5
6
7
9
10
11
8
PW_GND
MUTE
STBY
S_GND
SVR
N.C.
INL
VAROUT_L
VOLUME
VAROUT_R
INR
13
14
15
12
PW_GND
OUTR
VS
OUTL
D96AU441B
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TDA7495
ELECTRICAL CHARACT ERISTICS (Refer to the test circuit V
S
= 20V; R
L
= 8Ω, R
g
= 50Ω, T
amb
= 25°C) .
Symbol Parameter Test Condition Min. Typ. Max. Unit
V
S
Supply Voltage Range 11 35 V
I
q
Total Quiescent Current 70 100 mA
DCV
OS
Output DC Offset Referred to
SVR Potenial No Input Signal -650 650 mV
V
O
Quiescent Output Voltage 10 V
P
O
Output Power THD = 10%; R
L
= 8Ω; V
S
= 28V 9.5 11 W
THD = 1%; R
L
= 8Ω; V
S
= 28V 7.5 8 W
THD = 10%; R
L
= 4Ω; V
CC
= 20V 7 8 W
THD = 1%; R
L
= 4Ω; V
CC
= 20V 5 6 W
THD = 10%; R
L
= 8Ω; V
CC
= 18V 3.5 3.8 W
THD = 1%; R
L
= 8Ω; V
CC
= 18V 2.6 2.9 W
THD Total Harmonic Distortion G
V
= 30dB; P
O
= 1W; f = 1KHz; 0.4 %
I
peak
Output Peak Current (internally limited) 1.7 2.4 A
V
in
Input Signa l 2.8 Vrms
G
V
Closed Loop Gain Vol Ctrl > 4.5V 28.5 30 31.5 dB
GvLine Monitor Out Gain Vol Ctrl > 4.5V; Zload > 30KΩ-1.5 0 1.5 dB
A
Min
V
OL
Attenuation at Minimum Volume Vol Ctrl < 0.5V 80 dB
BW 0.6 MHz
e
N
Total Output Noise f = 20Hz to 22KHz
Play, max volume 500 800 µV
f = 20Hz to 22KHz
Play, max attenua tion 100 250 µV
f = 20Hz to 22KHz Mute 60 150 µV
SR Slew Rate 5 8 V/µs
R
i
Input Resis tance 22.5 30 K Ω
R
Var Out
Variable Output Resistance 30 100 Ω
R
load Var
Out
Variable Output Load 2 KΩ
SVR Supply Voltage Rejection f = 1kHz; max volume
C
SVR
= 470µF; V
RIP
= 1Vrms 35 39 dB
f = 1kHz; max attenuation
C
SVR
= 470µF; V
RIP
= 1Vrms 55 65 dB
T
M
Thermal Muting 150 °C
T
s
Thermal Shut-down 160 °C
MUTE STAND-BY & INPUT SELECTION FUNCTIONS
V
ST-BY
Stand -by threshold 2.3 2.5 2 .7 V
V
MUTE
Mute Threshold 2.3 2.5 2.7 V
I
qST-BY
Quiescent Current @ Stand-by 0.6 1 mA
A
MUTE
Mute Attenuation 50 65 dB
I
stbyBIAS
Stand-by bias current Stand by on V
ST-BY
= 5V
V
MUTE
= 5V 80 µA
Play or Mute -20 -5 µA
I
muteBIAS
Mute bias current Mute 1 5 µA
Play 0.2 2 µA
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TDA7495
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Fi gure 1a . Applica tion C i rcui t.
Figure 1b. P.C.B. and Component Layo ut.
VOLUME
OP AMP
+
-
MUTE/STBY
PROTECTIONS
1
C2 470nF
INR
30K
VOLUME
OP AMP
+
-30K
C8 1000µF
C6 1000µF
C7
1µF
R2 10K
5
C3 470nF
INL
8
S_GND
2
14
9
10
12
34
R1 300K
C5
100nF
VOLUME
OUTR
S1 STBY
S2 MUTE
OUTL
11
C4 470µF
SVR 7
D96AU493D
VS
VAROUT_R
PW_GND
15
13
C9
0.1µF
C1
1000µF
+VS
PW_GND
VOL
P1
50K
LOG
+5V
TP1
PW_GND
PW_GND
S_GND
+5V
+5V
VAROUT_L
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TDA7495
APPLICATI ON SUGGESTIONS
The recommended values of the external components are those shown on the application circuit of figure
1a. Different values can be used, the following table can help the des igner.
TYPICAL CHARACTERISTICS:
Refer to the appl ication circuit of fig.1A T
amb
= 25°C; V
S
= 20 V; R
L
= 8Ω; F = 1KHz; R
S
= 50Ω; unless
otherwise spec ifi ed.
COMPONENT SUGGESTION
VALUE PURPOSE LARGER THAN
SUGGESTION SMALLER THAN
SUGGESTION
R1 300K Volume control
circuit L arg er vo lume regulation time Smaller volume regulation time
R2 10K Mute time constant Larger mute on/off time Smaller mute on/off time
P1 50K Volume control
circuit
C1 1000µF Supply voltage
bypass Danger of oscillatio n
C2 470nF Input DC decoupling Lower low frequency
cutoff Hig her low frequency cutoff
C3 470nF Input DC decoupling Lower low frequency
cutoff Hig her low frequency cutoff
C4 470µF Ripple rejection Better SVR Worse SVR
C5 100nF Volume control time
costant Larger volume regulation
time Smaller volume regulation time
C6 1000µF Output DC
decoupling Lower low frequency
cutoff Hig her low frequency cutoff
C7 1µF Mute time costant Larger mute on/off time Smaller mute on/off time
C8 1000µF Output DC
decoupling Lower low frequency
cutoff Hig her low frequency cutoff
C9 100nF Supply voltage
bypass Danger of oscillatio n
Figu re 2. Ou tput P ower v s Su ppl y V ol ta ge Figu re 3. Dis to rti on v s Ou t pu t Power
11 15 19 23 27 31 VS(V)
0
2
4
6
8
10
12
14
POUT
(W)
16
d=10%
d=1%
RL=8Ω
D97AU559
02468P
OUT(W)
0.01
0.1
1
d
(%)
D97AU560
f=15KHz
VS=28V
RL=8Ω
f=1KHz
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Figu re 4. Ou tput P ower v s Su ppl y V ol ta ge
Figu re 5. Dis to rti on v s Ou t pu t Power
Figure 6 . gain vs Volume Control (pin # 3)
Figure 7. Supply Voltage vs Frequency
Figure 8. Stand-by Attenuation vs Vpi n #9
Figure 9. Mute At tenuation vs V pin #10
D97AU561
10 12 14 16 18 20 22 24 VS(V)
0
2
4
6
8
10
12
14
POUT
(W)
RL=4Ω
d=10%
d=1%
0246P
OUT(W)
0.01
0.1
1
d
(%)
D97AU562
f=15KHz
VS=20V
RL=4Ω
f=1KHz
0.0 1.0 2.0 3.0 4.0 Vpin#3
(
V
)
-80
-70
-60
-50
-40
-30
-20
-10
0
10
20
30
Gain
(dB)
D97AU563
POUT=1W
20 100 1K f
(
Hz
)
-100
-80
-60
-40
-20
SVR
(dB)
D97AU564
VRIP=1VRMS
MAX VOLUME
MAX ATTENUATION
0 1 2 3 4 Vpin#9(V)
-120
-100
-80
-60
-40
-20
0
ATT
(dB)
D97AU565
0dB=1W
0 1 2 3 4 Vpin#10
(
V
)
-100
-80
-60
-40
-20
0
ATT
(dB)
D97AU566
0dB=1W
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TDA7495
Figure 10. Pow er dissipation vs Ou tput Pow er Figu re 11. Pow er Dissipatio n vs Output Power
0.1 1 10 POUT(W)
0
2
4
6
8
PDISS
(W)
D97AU567
VS=14V
VS=18V
VS=24V
RL=2 x 8Ω
f=1KHz
10
VS=28V
0.1 1 10 POUT(W)
0
4
8
12
16
PDISS
(W)
D97AU568
VS=20V
VS=26V
RL=2 x 4Ω
f=1KHz
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MUTE STAND-BY TRUTH TABLE
Turn ON/OFF Se quences (for optimizing the POP performances)
A) USING MUTE AND STAND-BY FUNCTIONS
B) USING ONLY THE MUTE F UNCTION
To semplify the application, the stand-by pin can be connec ted directly to Ground.
During the ON/OFF transitions we recommend to respect the f ollowing condi t ions:
– At the turn-on the transition m ute to play must be made when the SVR pin is higher than 2.5V
– At the turn-off the TDA7495 must be brought to mute f rom the play c ondi tion when the SVR pin is higher
than 2.5V.
MUTE ST-BY OPERATING CONDITION
H H STANDBY
L H STANDBY
H L MUTE
L L PLAY
OFFSTBY MUTE PLAY STBYOFF MUTE
28
VS (V)
5
ST-BY
pin#9 (V)
5
MUTE
pin#10 (V)
INPUT
(mV)
VOUT
(V)
IQ
(mA)
D96AU531A
VSVR
pin#7(V)
2.5V
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TDA7495
Figure 12. PINS: INL, INR
Figure 13. PIN: VOLUME
Figure 14. PINS: PW-GND, S-GND
Figure 15. PIN: STBY
Figure 16. PINS: V AROUT-L, VAROUT-R
Figure 17. PIN: MUTE
Figure 18. PINS: OUT R, OUT L
500µA
30K
VS
INn
SVR
D97AU589
6K
VOL
D97AU591
VS
10µA
GND
D97AU593
VS
10µA
65K
VS
STBY
D97AU594
200
VAROUT-L
D97AU590
VS
50µA
200MUTE
D97AU592
10K
VS
OUT
D97AU588
VS
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Figure 19. PIN: SVR
+
-
+
-
6K
6K
1K
1K
30K
30K
SVR 20K
20K
VSVSVS
OUT L
OUT R
100µA
D97AU585A
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TDA7495
OUTLINE AND
M E CHANICAL DA TA
0016036 J
DIM. mm inch
MIN. TYP. MAX. MIN. TYP. MAX.
A5 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 0.87 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 4.73 5.08 5.43 0.186 0.200 0.214
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
Multiw att15 (Vertical )
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Information furnished is believed to be accurate and reliable. However, STMicroelectronics assumes no r esponsibility for the consequences
of use of such information nor for any inf ringement of patents or other rights of third parties which may result from its use. No license is granted
by i m pl i cation or oth erwise under any pat ent or paten t rights of STMi croelectronic s. Specifications m entioned in this publicati on are subject
to change without notice. This publication supersedes and replaces all information previous ly supplied. STMicroelectronics products are not
authorized f or use as c ri tical com ponents in lif e support devices or systems wi t hout exp ress writ ten approval of STM i croelectronics.
Th e ST logo is a register ed tradem ark of STM i croel ectronic s.
All o th er names are the propert y of their re spectiv e owners
© 2003 STMi croelect ronics - A l l ri ghts reserved
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TDA7495
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