规格书

1/13 TDA7495SSA January 2004 This is preliminary information on a new product now in development. Details are subject to change without notice. ■ 11+11W OUTPUT POWER RL = 8Ω @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 ■ CLIPWATT 15 PACKAGE DESCRIPTION The TDA7495SSA is a stereo 11+11W class AB power amplifier assembled i the @Clipwatt 15 pack- age, specially designed for high quality sound TV ap- plications. Features of the TDA7495SSA include, Stand-by and Mute functions. The TDA7495SSA is pin to pin compatible with TDA7496, TDA7496S, TDA7496SA, TDA7495, TDA7495SA, TDA7494S, TDA7494SA, TDA7496SSA. Clipwatt 15 ORDERING NUMBER: TDA7495SSA PRODUCT PREVIEW 11W+11W AMPLIFIER BLOCK DIAGRAM OP AMP + - MUTE/STBY PROTECTIONS 1 470nF INR 30K OP AMP + -30K 1000µF 1000µF 1µF 10K 5 470nF INL 8 S_GND 14 9 10 12 OUTR STBY MUTE OUTL 11 PW_GND 470µF SVR 7 D99AU1015 VS PW_GND 15 13 S1 ST-BY +5V S2 MUTE +5V S_GND 60K MULTIPOWER BI50II TECHNOLOGY TDA7495SSA 2/13 ABSOLUTE MAXIMUM RATINGS PIN CONNECTION (top view) THERMAL DATA Symbol Parameter Value Unit VS DC Supply Voltage 40 V VIN Maximum Input Voltage 8 Vpp Ptot Total Power Dissipation (Tamb = 70°C) 15 W Tamb Ambient Operating Temperature (1) 0 to 70 °C Tstg,TJ Storage and Junction Temperature -40 to 150 °C Symbol Parameter Value Unit Rth j-case Thermal Resistance junction-case Typ. = 4.5; Max. = 5 °C/W Rth j-amb Thermal Resistance junction-ambient Max. 48 °C/W ELECTRICAL CHARACTERISTCS (Refer to the test circuit VS = 20V, RL = 8Ω, f = 1KHz, Rg = 50Ω, Tamb = 25°C) Symbol Parameter Test Condition Min. Typ. Max. Unit Vs Supply Voltage Range 11 35 V Iq Total Quiescent Current 70 100 mA DCVos Output DC Offset Referred to SVR Potential No Input Signal 200 mV VO Quiescent Output Voltage 8.5 10 11.5 V 1 2 3 4 5 6 7 9 10 11 8 PW_GND MUTE STBY S_GND SVR N.C. INL N.C. N.C. N.C. INR 13 14 15 12 PW_GND OUTR VS OUTL D02AU1412A 3/13 TDA7495SSA PO Output Power THD = 10%; RL = 8Ω; VS = 28V THD = 1%; RL = 8Ω; VS = 28V 9.5 7.5 11 8.8 W THD = 10%; RL = 4Ω; THD = 1%; RL = 4Ω; 7 5 8.7 6.8 W THD Total Harmonic Distortion Gv = 30dB; PO = 1W; f = 1KHz 0.4 % Ipeak Output Peak Current (internally limited) 1.7 2.4 A VIN Input Signal 2.8 Vrms GV Closed Loop Gain VOl Ctrl >4.5V 28.5 30 31.5 dB BW 0.6 MHz eN Total Output Noise f = 20Hz to 22KHz PLAY 500 800 µV f = 20Hz to 22KHz MUTE 60 150 µV SR Slew Rate 5 8 V/µs Ri Input Resistance 22.5 30 KΩ SVR Supply Voltage Rejection f = 1KHz; max volume CSVR = 470µF; VRIP = 1Vrms 35 39 dB TM Thermal Muting 150 °C TS Thermal Shut-down 160 °C MUTE & INPUT SELECTION FUNCTIONS VST-ON Stand-by ON Threshold 3.5 V VST-OFF Stand-by OFF Threshold 1.5 V VMUTEON Mute ON threshold 3.5 V VMUTEOFF Mute OFF threshold 1.5 V AMUTE Mute Attenuation 50 65 dB IqST-BY Quiescent Current @ Stand-by 0.6 1 mA IstbyBIAS Stand-by bias current Stand by ON: VST-BY = 5V; Vmute = 5V 80 µA Play or Mute -20 -5 µA ImuteBIAS Mute Bias Current Mute 1 5 µA Play 0.2 2 µA ELECTRICAL CHARACTERISTCS (continued) (Refer to the test circuit VS = 20V, RL = 8Ω, f = 1KHz, Rg = 50Ω, Tamb = 25°C) Symbol Parameter Test Condition Min. Typ. Max. Unit TDA7495SSA 4/13 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. Figure 1. Application Circui COMPONENT SUGGESTION VALUE PURPOSE LARGER THAN SUGGESTION SMALLER THAN SUGGESTION R2 10K Mute time constant Larger mute on/off time Smaller mute on/off time C1 1000µF Supply voltage bypass Danger of oscillation C2 470nF Input DC decoupling Lower low frequency cutoff Higher low frequency cutoff C3 470nF Input DC decoupling Lower low frequency cutoff Higher low frequency cutoff C4 470µF Ripple rejection Better SVR Worse SVR C6 1000µF Output DC decoupling Lower low frequency cutoff Higher low frequency cutoff C7 1µF Mute time constant Larger mute on/off time Smaller mute on/off time C8 1000µF Output DC decoupling Lower low frequency cutoff Higher low frequency cutoff C9 100nF Supply voltage bypass Danger of oscillation OP AMP + - MUTE/STBY PROTECTIONS 1 C2 470nF INR 30K OP AMP + -30K C8 1000µF C6 1000µF C7 1µF R2 10K 5 C3 470nF INL 8 S_GND 14 9 10 12 OUTR S1 STBY S2 MUTE OUTL 11 C4 470µF SVR 7 D99AU1017 VS PW_GND 15 13 C9 0.1µF C1 1000µF +VS PW_GND PW_GND PW_GND S_GND +5V +5V 5/13 TDA7495SSA MUTE STAND-BY TRUTH TABLE Turn ON/OFF Sequences (for optimizing the POP performances) Figure 1. USING ONLY THE MUTE FUNCTION USING ONLY THE MUTE FUNCTION To semplify the application, the stand-by pin can be connected directly to Ground. During the ON/OFF transi- tions 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 TDA7495SSA must be brought to mute from the play condition when the SVR pin is higher than 2.5V. MUTE St-BY OPERATING CONDITION H H STAND-BY L H STAND-BY H L MUTE L L PLAY OFFSTBY MUTE PLAY STBYOFF MUTE VS (V) 5 ST-BY pin#9 (V) 5 MUTE pin#10 (V) INPUT (mV) VOUT (V) IQ (mA) D97AU684 VSVR pin#7(V) 2.5V TDA7495SSA 6/13 Figure 2. P.C.B. and Component layoutPCB and Component Layout Figure 3. 7/13 TDA7495SSA Figure 4. Output Power vs. Supply Voltage Figure 5. Output DC Offset vs. Supply Voltage Figure 6. Output Power vs Supply Voltage Figure 7. Distortion vs Output Power Figure 8. Distortion vs Output Power Figure 9. Closed Loop Gain vs. Frequency 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 10 12 14 16 18 20 22 24 26 28 30 32 100 120 140 160 180 200 220 240 260 280 Supply Voltage (V) Vi=0 Vodc-Vsvr (mV) D03AU1496/mod 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% 0 2 4 6 8 POUT(W) 0.01 0.1 1 d (%) D97AU560 f=15KHz VS=28V RL=8Ω f=1KHz 0 2 4 6 POUT(W) 0.01 0.1 1 d (%) D97AU562 f=15KHz VS=20V RL=4Ω f=1KHz 20 0.02 0.2 2 20 22 24 26 28 30 Closed loop Gain (dB) Frequency (KHz) D03AU1501 Rl=8Ω Pout=0.5W Cin=470nF Cout=1000µF Csvr=470µF TDA7495SSA 8/13 Figure 10. St-By Attenuation vs Vpin 9 Figure 11. Mute Attenuation vs Vpin 10 PINS DESCRIPTION Figure 12. PIN SVR Figure 13. PINS: INL,INR Figure 15. PIN ST-BY Figure 16. PIN: MUTE Figure 17. PINS: OUT R, OUT L Figure 18. PINS: PW-GND, S-GND 0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 St-by Attenuation (dB) Vpin # 9 (V) D03AU1502 Rl=8Ω 0dB @ Pout=1W -140 -120 -100 -80 -60 -40 -20 0 0 1 2 3 4 Vpin#10(V) -100 -80 -60 -40 -20 0 ATT (dB) D97AU566 0dB=1W + - + - 6K 6K 1K 1K 30K 30K SVR 20K 20K VS VS VS OUT L OUT R 100µA D97AU585A 500µA 30K VS INn SVR D97AU589 6K 10µA 65K VS STBY D97AU594 200 50µA 200MUTE D97AU592 10K VS OUT D97AU588 VS GND D97AU593 VS 9/13 TDA7495SSA HEAT SINK DIMENSIONING: In order to avoid the thermal protection intervention, that is placed approximatively at Tj = 150°C, 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 = 28V, Rload = 8ohm, RTh j-c = 5 °C/W , Tamb max = 50°C Pdmax = (N° channels) · Pdmax = 12 W (Heat Sinker) Vcc 2 2Π2 Rload⋅ ------------------------------ Iq Vcc⋅+ RTh c-a 150 Tamb max– Pd max ----------------------------------------- RTh j-c– 150 50– 12---------------------- 5.0– 3.3°C/W= = = In figure 21 is shown the Power derating curve for the device. Figure 19. Power derating curve 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 pack- age 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. a) Infinite Heatsink b) 7 °C/ W c) 10 °C/ W (c) (a)(d) 0 5 10 15 20 0 40 80 120 160 Tamb (°C) Pd (W ) a) Infinite Heatsink b) 7 °C/ W c) 10 °C/ W (c) (a) (b) 0 5 10 15 20 0 40 80 120 160 Tamb (°C) Pd (W ) d) 3.3 °C/ W TDA7495SSA 10/13 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 20. Example of right placement of the clip 11/13 TDA7495SSA OUTLINE AND MECHANICAL DATA 0044538 G DIM. mm inch MIN. TYP. MAX. MIN. TYP. MAX. A 3.2 0.126 B 1.05 0.041 C 0.15 0.006 D 1.50 0.061 E 0.49 0.55 0.019 0.022 F 0.67 0.73 0.026 0.029 G 1.14 1.27 1.4 0.045 0.050 0.055 G1 17.57 17.78 17.91 0.692 0.700 0.705 H1 12 0.480 H2 18.6 0.732 H3 19.85 0.781 L 17.9 0.704 L1 14.55 0.572 L2 10.7 11 11.2 0.421 0.433 0.441 L3 5.5 0.217 M 2.54 0.100 M1 2.54 0.100 Clipwatt15 Weight: 1.92gr TDA7495SSA 12/13 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 © 2004 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 13/13 TDA7495SSA