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TDA7495S
11W+11W AMPLIFIER
11+11W OUTPUT POWER RL = 8 @THD = 10% VCC = 28V ST-BY AND MUTE FUNCTIONS LOW TURN-ON TURN-OFF POP NOISE NO BOUCHEROT CELL NO ST-BY RC INPUT NETWORK SINGLE SUPPLY RANGING UP TO 35V SHORT CIRCUIT PROTECTION THERMAL OVERLOAD PROTECTION INTERNALLY FIXED GAIN SOFT CLIPPING MULTIWATT 15 PACKAGE DESCRIPTION The TDA7495S is a stereo 11+11W class AB power amplifier assembled in the @ Multiwatt 15 package, specially designed for high quality sound, TV applications.
MULTIPOWER BI50II TECHNOLOGY
Multiwatt15 ORDERING NUMBER: TDA7495S
Features of the TDA7495S include linearStand-by and mute functions.
BLOCK AND APPLICATION DIAGRAM
VS 13 INR 470nF 1 30K + OP AMP S1 ST-BY S_GND 8 MUTE/STBY PROTECTIONS PW_GND 11 5 470nF 30K 60K 10 MUTE 9 STBY 10K 1F S2 MUTE INL + OP AMP SVR 470F
D99AU1015
14
1000F OUTR
+5V S_GND
+5V
12
OUTL 1000F
7
15
PW_GND
Jenuary 2000
1/11
TDA7495S
ABSOLUTE MAXIMUM RATINGS
Symbol VS VIN Ptot Tamb Tstg, Tj DC Supply Voltage Maximum Input Voltage Total Power Dissipation (Tamb = 70C) Ambient Operating Temperature (1) Storage and Junction Temperature Parameter Value 40 8 20 -20 to 85 -40 to 150 Unit V Vpp W C C
(1) Operation between -20 to 85 C guaranteed by correlation with 0 to 70C.
PIN CONNECTION (Top view)
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 PW_GND OUTR VS OUTL PW_GND MUTE STBY S_GND SVR N.C. INL N.C. N.C. N.C. INR
D99AU1016
THERMAL DATA
Symbol Rth j-case Rth j-amb Parameter Thermal Resistance Junction-case Thermal Resistance Junction-ambient max Typ. = 2 35 Value Max. = 2.8 Unit C/W C/W
ELECTRICAL CHARACTERISTICS (Refer to the test circuit VS = 20V; RL = 8, Rg = 50, Tamb = 25C).
Symbol VS Iq DCVOS VO PO Parameter Supply Voltage Range Total Quiescent Current Output DC Offset Referred to SVR Potenial Quiescent Output Voltage Output Power No Input Signal VS = 20V THD = 10%; RL = 8; VS = 28V THD = 1%; RL = 8; VS = 28V THD = 10%; RL = 4; VS = 20V THD = 1%; RL = 4; VS = 20V THD = 10%; RL = 8; VS = 18V THD = 1%; RL = 8; VS = 18V 2/11 Test Condition Min. 11 70 -750 8.5 9.5 7.5 7 5 3.5 2.2 10 11 8.8 8.7 6.8 4 3.2 Typ. Max. 35 100 750 11.5 Unit V mA mV V W W W W W W
TDA7495S
ELECTRICAL CHARACTERISTICS (continued)
Symbol THD Ipeak Vin AMin VOL BW eN Parameter Total Harmonic Distortion Output Peak Current Input Signal Attenuation at Minimum Volume Total Output Noise Vol Ctrl < 0.5V f = 20Hz to 22KHz Play f = 20Hz to 22KHz Mute SR Ri SVR Slew Rate Input Resistance Supply Voltage Rejection f = 1kHz; max volume CSVR = 470F; VRIP = 1Vrms f = 1kHz; max attenuation CSVR = 470F; VRIP =1Vrms TM Ts VST-BY VMUTE IqST-BY AMUTE IstbyBIAS Thermal Muting Thermal Shut-down Stand-by threshold Mute Threshold Quiescent Current @ Stand-by Mute Attenuation Stand-by bias current Stand by on VST-BY = 5V VMUTE = 5V Play or Mute Mute Play -20 50 2.3 2.3 5 22.5 35 55 80 0.6 60 60 8 30 39 65 150 160 2.5 2.5 0.6 65 80 -5 1 0.2 2.7 2.7 1 150 150 Test Condition GV = 30dB; PO = 1W; f = 1KHz; (internally limited) 1.7 2.4 2.8 Min. Typ. Max. 0.4 Unit % A Vrms dB MHz V V V/s K dB dB C C V V mA dB A A 5 2 A A A
MUTE STAND-BY & INPUT SELECTION FUNCTIONS
ImuteBIAS
Mute bias current
3/11
TDA7495S
Figure 1a: Application Circuit.
+VS C1 1000F VS PW_GND 11 1 C2 470nF 30K + OP AMP 13 15 14 C8 1000F S1 STBY S_GND 8 MUTE/STBY PROTECTIONS 9 10 C7 1F + 30K OP AMP SVR C4 470F
D99AU1017
C9 0.1F PW_GND PW_GND OUTR
INR
+5V
R2 10K
S_GND +5V
INL C3 470nF
5
S2 MUTE OUTL
12 C6 1000F
PW_GND
7
Figure 1b: P.C.B. and Component Layout.
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TDA7495S
APPLICATION 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 designer.
COMPONENT R2 C1 C2 C3 C4 C6 C7 C8 C9 SUGGESTION VALUE 10K 1000F 470nF 470nF 470F 1000F 1F 1000F 100nF PURPOSE Mute time constant Supply voltage bypass Input DC decoupling Input DC decoupling Ripple rejection Mute time costant Supply voltage bypass Lower low frequency cutoff Lower low frequency cutoff Better SVR Larger mute on/off time LARGER THAN SUGGESTION Larger mute on/off time SMALLER THAN SUGGESTION Smaller mute on/off time Danger of oscillation Higher low frequency cutoff Higher low frequency cutoff Worse SVR Higher low frequency cutoff Smaller mute on/off time Higher low frequency cutoff Danger of oscillation
Output DC decoupling Lower low frequency cutoff Output DC decoupling Lower low frequency cutoff
TYPICAL CHARACTERISTICS: Refer to the application circuit of fig.1A Tamb = 25C; VS = 20V; RL = 8; F = 1KHz; RS = 50; unless otherwise specified. Figure 2: Output Power vs Supply Voltage
POUT (W) 16 14 RL=8 12 10 8 6 4 2 0 d=1% d=10%
D97AU559
Figure 3: Distortion vs Output Power
d (%)
D97AU560
VS=28V RL=8
1
f=15KHz
0.1
f=1KHz
0.01
11 15 19 23 27 31 VS(V)
0
2
4
6
8
POUT(W)
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TDA7495S
Figure 4: Output Power vs Supply Voltage
POUT (W) 14 12
RL=4
D97AU561
Figure 5: Distortion vs Output Power
d (%)
VS=20V RL=4
D97AU562
10 8
d=10%
1
f=15KHz
f=1KHz
d=1%
6 4 2 0 10 12 14 16 18 20 22 24 VS(V)
0.1
0.01 0 2 4 6 POUT(W)
Figure 6: Stand-by Attenuation vs Vpin #9
ATT (dB) 0 -20
0dB=1W
D97AU565
Figure 7: Mute Attenuation vs V pin #10
ATT (dB) 0 -20
0dB=1W
D97AU566
-40
-40
-60 -80 -100 -120 0 1 2 3 4 Vpin#9(V)
-60 -80 -100 0 1 2 3 4 Vpin#10(V)
Figure 8: Power dissipation vs Output Power
PDISS (W) 10 8 6 4 2 0 0.1 1 10 POUT(W)
RL=2 x 8 f=1KHz VS=28V
D97AU567
Figure 9: Power Dissipation vs Output Power
PDISS (W) 16
RL=2 x 4 f=1KHz VS=26V
D97AU568
12
VS=24V VS=20V
8
VS=18V VS=14V
4
0 0.1 1 10 POUT(W)
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TDA7495S
MUTE STAND-BY TRUTH TABLE
MUTE H L H L ST-BY H H L L OPERATING CONDITION STANDBY STANDBY MUTE PLAY
Turn ON/OFF Sequences (for optimizing the POP performances) A) USING MUTE AND STAND-BY FUNCTIONS
VS (V) 28
ST-BY pin#9 (V) 5
VSVR pin#7(V)
2.5V MUTE pin#10 (V) 5
INPUT (mV)
VOUT (V)
OFF
STBY MUTE
PLAY
MUTE STBY
OFF
IQ (mA)
D96AU531A
B) USING ONLY THE MUTE FUNCTION To semplify the application, the stand-by pin can be connected directly to Ground. During the ON/OFF transitions we recommend to respect the following conditions:
- At the turn-on the transition mute to play must be made when the SVR pin is higher than 2.5V - At the turn-off the TDA7495S must be brought to mute from the play condition when the SVR pin is higher than 2.5V.
7/11
TDA7495S
PINS: INL, INR
VS
PIN: MUTE
VS
6K INn 30K
D97AU592
D97AU589
500A
MUTE
200
10K
50A
SVR
PINS: PW-GND, S-GND
PINS: OUT R, OUT L
VS
VS GND
D97AU593
OUT
D97AU588
PIN: STBY
VS
10A STBY 200
65K
D97AU594
8/11
TDA7495S
PIN: SVR
VS
VS
VS
+ 30K
OUT L
20K SVR 20K
6K
1K
6K
1K 30K OUT R -
100A
+
D97AU585A
9/11
TDA7495S
DIM. MIN. A B C D E F G G1 H1 H2 L L1 L2 L3 L4 L7 M M1 S S1 Dia1 21.9 21.7 17.65 17.25 10.3 2.65 4.25 4.63 1.9 1.9 3.65 4.55 5.08 17.5 10.7 22.2 22.1 0.49 0.66 1.02 17.53 19.6 20.2 22.5 22.5 18.1 17.75 10.9 2.9 4.85 5.53 2.6 2.6 3.85 0.862 0.854 0.695 0.679 0.406 0.104 0.167 0.182 0.075 0.075 0.144 0.179 0.200 0.689 0.421 0.874 0.870 1.27 17.78 1 0.55 0.75 1.52 18.03 0.019 0.026 0.040 0.690 0.772 0.795 0.886 0.886 0.713 0.699 0.429 0.114 0.191 0.218 0.102 0.102 0.152 0.050 0.700 mm TYP. MAX. 5 2.65 1.6 0.039 0.022 0.030 0.060 0.710 MIN. inch TYP. MAX. 0.197 0.104 0.063
OUTLINE AND MECHANICAL DATA
Multiwatt15 V
10/11
TDA7495S
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 (c) 2000 STMicroelectronics - Printed in Italy - All Rights Reserved STMicroelectronics GROUP OF COMPANIES Australia - Brazil - China - Finland - France - Germany - Hong Kong - India - Italy - Japan - Malaysia - Malta - Morocco Singapore - Spain - Sweden - Switzerland - United Kingdom - U.S.A. http://www.st.com
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