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TDA7496SSA
5W+5W AMPLIFIER
PRODUCT PREVIEW
s
5+5W OUTPUT POWER RL = 8 @THD = 10% VCC = 22V 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 CLIPWATT 15 PACKAGE tions.
MULTIPOWER BI50II TECHNOLOGY
s s s s s s s s s s
Clipwatt 15 ORDERING NUMBER: TDA7496SSA
DESCRIPTION The TDA7496SSA is a stereo 5+5W class AB power amplifier assembled i the @Clipwatt 15 package, specially designed for high quality sound TV applicaBLOCK DIAGRAM
VS 13 INR 470nF 1 30K + OP AMP
Features of the TDA7496SSA include, Stand-by and Mute functions. The TDA7496SSA is pin to pin compatible with TDA7496, TDA7496S, TDA7496SA, TDA7495, TDA7495SA, TDA7494S, TDA7494SA, TDA96SA.
14
1000F OUTR S1 ST-BY
S_GND
8 MUTE/STBY PROTECTIONS
9
STBY 10K
+5V S_GND
PW_GND
11 5
60K
10
MUTE
1F S2 MUTE
+5V
INL 470nF
+ 30K OP AMP
12
OUTL 1000F
SVR 470F
7
15
PW_GND
D99AU1015
September 2003
This is preliminary information on a new product now in development. Details are subject to change without notice.
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TDA7496SSA
ABSOLUTE MAXIMUM RATINGS
Symbol VS VIN Ptot Tamb Tstg,TJ V3 DC Supply Voltage Maximum Input Voltage Total Power Dissipation (Tamb = 70C) Ambient Operating Temperature (1) Storage and Junction Temperature Volume Control DC Voltage Parameter Value 35 8 15 0 to 70 -40 to 150 7 Unit V Vpp W C C V
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
D02AU1412A
THERMAL DATA
Symbol Rth j-case Rth j-amb Parameter Thermal Resistance junction-case Thermal Resistance junction-ambient Max. Value Typ. = 4.5; Max. = 5 48 Unit C/W C/W
ELECTRICAL CHARACTERISTCS (Refer to the test circuit VS = 22V, RL = 8, f = 1KHz, Rg = 50, Tamb = 25C)
Symbol Parameter Supply Voltage Range Total Quiescent Current Output DC Offset Referred to SVR No Input Signal Potential Quiescent Output Voltage Test Condition Min. 10 25 200 11 Typ. Max. 32 50 Unit V mA mV
Vs
Iq DCVos
VO
V
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TDA7496SSA
ELECTRICAL CHARACTERISTCS (continued) (Refer to the test circuit VS = 22V, RL = 8, f = 1KHz, Rg = 50, Tamb = 25C)
Symbol Parameter Output Power Test Condition THD = 10%; RL = 8; THD = 1%; RL = 8; THD = 10%; RL = 4; VS = 12V THD = 1%; RL = 4; VS = 12V Min. 5 Typ. 5.5 4 2.1 1.0 0.4 1.0 1.3 2.8 VOl Ctrl >4.5V 28.5 30 0.6 Total Output Noise f = 20Hz to 22KHz PLAY f = 20Hz to 22KHz MUTE SR Ri SVR TM TS Slew Rate Input Resistance Supply Voltage Rejection Thermal Muting Thermal Shut-down f = 1KHz; max volume CSVR = 470F; VRIP = 1Vrms 5 22.5 35 500 60 8 30 39 150 160 800 150 31.5 Max. Unit W W
PO
THD Ipeak
VIN GV BW eN
Total Harmonic Distortion Output Peak Current Input Signal Closed Loop Gain
Gv = 30dB; PO = 1W; f = 1KHz
(internally limited)
%
A Vrms dB MHz V V V/s K dB C C
MUTE & INPUT SELECTION FUNCTIONS VST-ON VST-OFF Stand-by ON Threshold Stand-by OFF Threshold 3.5 1.5 50 65 0.6 Stand by ON: VST-BY = 5V; Vmute = 5V Play or Mute ImuteBIAS Mute Bias Current Mute Play -20 80 -5 1 0.2 5 2 1 3.5 1.5 V V V V dB mA A A A A
VMUTEON Mute ON threshold VMUTEOFF Mute OFF threshold AMUTE IqST-BY IstbyBIAS Mute Attenuation Quiescent Current @ Stand-by Stand-by bias current
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TDA7496SSA
APPLICATION SUGGESTIONS The recommended values of the external components are those shown on the application circuit of figure 1. 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 Output DC decoupling Mute time constant Output DC decoupling Supply voltage bypass LARGER THAN SUGGESTION Larger mute on/off time SMALLER THAN SUGGESTION Smaller mute on/off time Danger of oscillation Lower low frequency cutoff Higher low frequency cutoff Lower low frequency cutoff Higher low frequency cutoff Better SVR Worse SVR
Lower low frequency cutoff Higher low frequency cutoff Larger mute on/off time Smaller mute on/off time
Lower low frequency cutoff Higher low frequency cutoff Danger of oscillation
Figure 1. Application Circui
+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
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TDA7496SSA
MUTE STAND-BY TRUTH TABLE
MUTE H L H L St-BY H H L L OPERATING CONDITION STAND-BY STAND-BY MUTE PLAY
Turn ON/OFF Sequences (for optimizing the POP performances) Figure 1. USING ONLY THE MUTE FUNCTION
VS (V)
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)
D97AU684
USING ONLY THE MUTE FUNCTION To semplify the application, the stand-by pin can be connected directly to Ground. During the ON/OFF transitions is recommended to respect the following conditions: - At the turn-on the transition mute to mute - play must be made when the SVR pin is higher than 2.5V - At the turn-off the TDA7496SSA must be brought to mute from the play condition when the SVR pin is higher than 2.5V.
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TDA7496SSA
Figure 2. P.C.B. and Component layoutPCB and Component Layout
Figure 3.
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TDA7496SSA
Figure 4. Quiescent Current vs. Supply Voltage
Iq (mA) 30 28 26 24 22 20 18 16 10 12 14 16 18 20 22 24 26 Supply Voltage (V) 28 30 32 Vi=0
Figure 7. Output DC Offset vs. Supply Voltage
Vodc-Vsvr (mV) 280 260 240 220 200 180 160 140 120 100 10 12 14 16 18 20 22 24 Supply Voltage (V) 26 28 30 32
D03AU1494
D03AU1496/mod
Vi=0
Figure 5. Output DC Voltage vs. Supply Voltage
Vodc (V) 16 15 14 13 12 11 10 9 8 7 6 5 4 Vi=0
Figure 8. Output Power vs Supply Voltage
Output Power (W) 3.2 2.8 2.4 2.0 1.6 1.2 0.8 0.4 0 THD=1% Rl=4 F=1KHz THD=10%
D03AU1498
D03AU1495
10
12
14
16
18 20 22 24 Supply Voltage (V)
26
28
30
32
10
10.5
11
11.5 12 12.5 Supply Voltage (V)
13
13.5
14
Figure 6. Output Power vs. Supply Voltage
Figure 9. Distortion vs Output Power
Output Power (W) 8 7 6 5 4 3 2 1 0 10 12 14 16 18 20 Supply Voltage (V) 22 Rl=8 F=1KHz THD=10%
D03AU1497
Distortion (%) Vs=22V Rl=8
D03AU1499
1
F=15KHz 0.1
THD=1%
F=1KHz
24
26
0.01
0
0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5 Output Power (W)
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TDA7496SSA
Figure 10. Distortion vs Output Power
Distortion (%)
D03AU1500
Figure 13. Mute Attenuation vs Vpin 10
Mute Attenuation (dB) 0
D03AU1503
1
F=15KHz Vs=12V Rl=4 F=1KHz
-20 -40 -60 -80 -100 -120
Rl=8 0dB @ Pout=1W
0.1
0.01
0
0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 1.8 2.0 Output Power (W)
0 0.4 0.8 1.2 1.6 2.0 2.4 2.8 3.2 3.6 4.0 4.4 4.8 5.2 Vpin # 10 (V)
Figure 11. Closed Loop Gain vs. Frequency
Closed loop Gain (dB) 30 28 26 24 22 20 0.02 0.2 2 Frequency (KHz) 20
D03AU1501
PINS DESCRIPTION Figure 14. PIN SVR
VS VS VS
Rl=8 Pout=0.5W Cin=470nF Cout=1000F Csvr=470F
SVR
+ 30K
OUT L
20K
6K
1K
20K
6K
1K 30K OUT R -
100A
Figure 12. St-By Attenuation vs Vpin 9
St-by Attenuation (dB) 0 -20 -40 -60 -80 -100 -120 -140 0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 Vpin # 9 (V) 4.0 4.5 5.0
D97AU589
Figure 15. PINS: INL,INR
D03AU1502
VS
Rl=8 0dB @ Pout=1W
6K INn 30K
SVR
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+
D97AU585A
500A
TDA7496SSA
Figure 17. PIN ST-BY
VS
Figure 19. PINS: OUT R, OUT L
VS
10A STBY 200
OUT
65K
D97AU594
D97AU588
Figure 18. PIN: MUTE
VS MUTE 200 10K
Figure 20. PINS: PW-GND, S-GND
VS GND
D97AU593
50A
D97AU592
HEAT SINK DIMENSIONING: In order to avoid the thermal protection intervention, that is placed approximatively at Tj = 150C, it is important the dimensioning of the Heat Sinker RTh (C/W). The parameters that influence the dimensioning are: - Maximum dissipated power for the device (Pdmax) - Max thermal resistance Junction to case (RTh j-c) - Max. ambient temperature Tamb max - Quiescent current Iq (mA) Example: VCC = 22V, Rload = 8ohm, RTh j-c = 5 C/W , Tamb max = 50C V cc Pdmax = (N channels) * ----------------------------- + I q V cc 2 2 R lo ad Pdmax = 2 * ( 3.0 ) + 0.5 = 6.5 W 150 - T am b max 150 - 50 (Heat Sinker) R Th c-a = ---------------------------------------- - R T h j-c = --------------------- - 5.0 = 10C /W 6.5 P d max In figure 21 is shown the Power derating curve for the device.
2
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TDA7496SSA
Figure 21. Power derating curve
20
15 (a) Pd (W) a) 10 (b) 5 (c) b) c) Infinite Heatsink 7 C/ W 10 C/ W
0 0 40 80 Tamb (C) 120 160
Clipwatt Assembling Suggestions The suggested mounting method of Clipwatt on external heat sink, requires the use of a clip placed as much as possible in the plastic body center, as indicated in the example of figure 22. A thermal grease can be used in order to reduce the additional thermal resistance of the contact between package and heatsink. A pressing force of 7 - 10 Kg gives a good contact and the clip must be designed in order to avoid a maximum contact pressure of 15 Kg/mm2 between it and the plastic body case. As example, if a 15Kg force is applied by the clip on the package , the clip must have a contact area of 1mm2 at least. Figure 22. Example of right placement of the clip
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TDA7496SSA
mm DIM. MIN. A B C D E F G G1 H1 H2 H3 L L1 L2 L3 M M1 10.7 19.85 17.95 14.45 11 5.5 2.54 2.54 11.2 0.421 0.49 0.67 1.14 17.57 1.27 17.78 12 18.6 0.781 0.707 0.569 0.433 0.217 0.100 0.100 0.441 0.15 1.55 0.55 0.73 1.4 17.91 0.019 0.026 0.045 0.692 0.050 0.700 0.480 0.732 TYP. MAX. 3.2 1.05 0.006 0.061 0.022 0.029 0.055 0.705 MIN. TYP. MAX. 0.126 0.041 Weight: 1.92gr inch
OUTLINE AND MECHANICAL DATA
Clipwatt15
0044538
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TDA7496SSA
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. All other names are the property of their respective owners (c) 2003 STMicroelectronics - All rights reserved STMicroelectronics GROUP OF COMPANIES Australia - Belgium - Brazil - Canada - China - Czech Republic - Finland - France - Germany - Hong Kong - India - Israel - Italy - Japan Malaysia - Malta - Morocco - Singapore - Spain - Sweden - Switzerland - United Kingdom - United States www.st.com
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