TDA7496L

TDA7496L ® 2W+2W AMPLIFIER WITH DC VOLUME CONTROL 2W+2W OUTPUT POWER RL = 8Ω @THD = 10% VCC = 14V ST-BY AND MUTE FUNCTIONS LOW TURN-ON TURN-OFF POP NOISE LINEAR VOLUME CONTROL DC COUPLED WITH POWER OP. AMP. NO BOUCHEROT CELL NO ST-BY RC INPUT NETWORK SINGLE SUPPLY RANGING UP TO 15V SHORT CIRCUIT PROTECTION THERMAL OVERLOAD PROTECTION INTERNALLY FIXED GAIN SOFT CLIPPING VARIABLE OUTPUT AFTER VOLUME CONTROL CIRCUIT POWERDIP (14+3+3) PACKAGE ) s ( ct u d o r P e Powerdip (14+3+3) t e l o ORDERING NUMBER: TDA7496L ) (s DESCRIPTION The TDA7496L is a stereo 2W+2W class AB power amplifier assembled in the @ Powerdip t c u BLOCK DIAGRAM let INR so b O d o r P e GND s b O 1,2,3,13, 18,19,20 VAROUT_R VS 7 15,16 VOLUME 9 470nF 14+3+3 package, specially designed for high quality sound, TV and Monitor applications. Features of the TDA7496L include linear volume control, Stand-by and mute functions. 30K 1000µF 14 + OUTR OP AMP S1 ST-BY 11 +5V STBY MUTE/STBY PROTECTIONS 60K VOLUME 470nF 12 MUTE + 30K 17 +5V 1µF OUTL - 1000µF OP AMP SVR S_GND S2 MUTE 4 INL 10K 10 470µF 6 VOLUME 5 VAROUT_L +5V D97AU596A 100nF September 2003 300K 1/10 TDA7496L ABSOLUTE MAXIMUM RATINGS Symbol Parameter VS VIN Ptot Tamb Value DC Supply Voltage 26 V Maximum Input Voltage Total Power Dissipation (Tcase = 60°C) 8 6 Vpp W 0 to 70 °C -40 to 150 °C 7 V Ambient Operating Temperature Tstg, Tj Storage and Junction Temperature Volume CTRL DC voltage V6 PIN CONNECTION Rthj-a (˚C/W) 1 20 GND GND 2 19 GND GND 3 18 GND INL 4 17 OUTL VAROUT_L 5 16 VS VOLUME 6 15 VS VAROUT_R 7 14 OUTR N.C. 8 13 GND INR 9 12 MUTE SVR 10 11 STBY u d o THERMAL DATA Rth j-amb (*) D97AU675 u d o COPPER AREA 35µ THICKNESS r P e 60 let 50 o s b O ) s ( t c D97AU597A Symbol ) s ( ct Rth with "on board" Square Heatsink vs. copper area. GND Rth j-pins Unit PC BOARD 40 30 0 4 8 Area(cm2) Value Unit Thermal Resistance Junction-pins max. 15 °C/W Thermal Resistance Junction-ambient max. 50 °C/W r P e Parameter 12 t e l o (*) Mounted on PCB with no heatsink ELECTRICAL CHARACTERISTICS (Refer to the test circuit VS = 14V; RL = 8Ω, Rg = 50Ω, Tamb = 25°C). s b O Symbol VS Iq DCVOS VO PO THD Ipeak Vin GV GvLine AMin VOL BW 2/10 Parameter Supply Voltage Range Total Quiescent Current Output DC Offset Referred to SVR Potenial Quiescent Output Voltage Output Power Total Harmonic Distortion Output Peak Current Input Signal Closed Loop Gain Monitor Out Gain Attenuation at Minimum Volume Test Condition Min. 10 Typ. 25 200 No Input Signal Max. 18 50 7 2 1.3 THD = 10%; RL = 8Ω; THD = 1%; RL = 8Ω; GV = 30dB; PO = 1W; f = 1KHz; (internally limited) 1.6 0.7 0.9 Vol Ctrl > 4.5V Vol Ctrl > 4.5V; Zload > 30KΩ Vol Ctrl < 0.5V 28.5 -1.5 80 30 0 0.4 0.6 2.8 31.5 1.5 Unit V mA mV V W W % A Vrms dB dB dB MHz TDA7496L ELECTRICAL CHARACTERISTICS (continued) Symbol eN Parameter Total Output Noise SR Ri RVar Out Rload Var Out SVR TM Ts Test Condition f = 20Hz to 22KHz Play, max volume f = 20Hz to 22KHz Play, max attenuation f = 20Hz to 22KHz Mute Slew Rate Input Resistance Variable Output Resistance Variable Output Load Supply Voltage Rejection Min. 5 22.5 f = 1kHz; max volume CSVR = 470µF; VRIP = 1Vrms f = 1kHz; max attenuation CSVR = 470µF; VRIP =1Vrms Thermal Muting Thermal Shut-down VST ON VST OFF VM ON VM OFF IqST-BY AMUTE IstbyBIAS Stand-by ON Threshold Stand-by OFF Threshold Mute ON Threshold Mute OFF Threshold Quiescent Current @ Stand-by Mute Attenuation Stand-by bias current bs u d o -O Stand by on VST-BY = 5V VMUTE = 5V Play or Mute Mute Play ) s ( ct Mute bias current ImuteBIAS t e l o Max. 800 Unit µV 100 250 µV 60 150 µV 100 V/µs KΩ Ω KΩ dB 8 30 30 2 35 39 55 65 ) s ( ct dB u d o r P e MUTE STAND-BY & INPUT SELECTION FUNCTIONS Typ. 500 150 160 °C °C 3.5 1.5 3.5 50 -20 0.6 65 80 -5 1 0.2 1.5 1 5 2 V V V V mA dB µA µA µA µA µA 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. let COMPONENT so R1 b O r P e SUGGESTION VALUE 300K R2 P1 10K 50K C1 1000µF C2 C3 C4 C5 470nF 470nF 470µF 100nF C6 1000µF C7 C8 1µF 1000µF C9 100nF PURPOSE Volume control circuit Mute time constant Volume control circuit Supply voltage bypass Input DC decoupling Input DC decoupling Ripple rejection Volume control time costant Output DC decoupling Mute time costant Output DC decoupling Supply voltage bypass LARGER THAN SUGGESTION Larger volume regulation time Larger mute on/off time SMALLER THAN SUGGESTION Smaller volume regulation time Smaller mute on/off time Danger of oscillation Lower low frequency cutoff Lower low frequency cutoff Better SVR Larger volume regulation time Lower low frequency cutoff Higher low frequency cutoff Higher low frequency cutoff Worse SVR Smaller volume regulation time Higher low frequency cutoff Larger mute on/off time Lower low frequency cutoff Smaller mute on/off time Higher low frequency cutoff Danger of oscillation 3/10 TDA7496L Figure 1A. Application Circuit. +VS C1 1000µF C9 0.1µF VS VAROUT_R PW_GND 7 1,2,3,13, 18,19,20 VOLUME 9 INR C2 470nF 15,16 30K C8 1000µF 14 + PW_GND OUTR OP AMP S1 STBY MUTE/STBY PROTECTIONS INL C3 470nF C7 1µF 60K VOLUME 4 + 30K r P e C6 1000µF 10 C4 470µF 6 C5 100nF t e l o 5 VOLUME VAROUT_L R1 300K TP1 ) (s VOL P1 50K LOG s b O +5V Figure 1B. PCB and Component Layout of the Fig. 1A (1.25:1 scale) t c u d o r P e t e l o s b O 4/10 u d o S2 MUTE 17 OP AMP SVR S_GND R2 10K 12 +5V ) s ( ct 11 OUTL PW_GND D97AU598A +5V TDA7496L MUTE STAND-BY TRUTH TABLE MUTE ST-BY OPERATING CONDITION H L H H STANDBY STANDBY H L MUTE L L PLAY Turn ON/OFF Sequences (for optimizing the POP performances) A) USING MUTE AND STAND-BY FUNCTIONS ) s ( ct VS (V) u d o r P e ST-BY pin#11 (V) t e l o 5 VSVR pin#10(V) ) (s 2.5V s b O t c u MUTE pin#12 (V) 5 d o r P e t e l o s b O INPUT (mV) VOUT (V) OFF STBY MUTE PLAY MUTE STBY OFF IQ (mA) D97AU683 B) USING ONLY THE MUTE FUNCTION To simplify the application, the stand-by pin can be connected directly to Ground. During the ON/OFF transitions is recommend to respect the following conditions. - At the turn-on, the transition mute - play must be made when the SVR pin is higher than 2.5V - At the turn-off, the TDA7496L must be brought to mute from the play condition when the SVR pin is higher than 2.5V. 5/10 TDA7496L Output DC Voltage vs. Supply Voltage Quiescent current vs. Supply Voltage 34 Iq (mA) 10 Vodc (V) 9.5 32 9 30 Vi=0 Vi=0 8.5 8 28 7.5 26 7 24 6.5 6 22 ) s ( ct 5.5 20 5 18 4.5 16 10 11 12 13 14 15 16 17 4 10 18 11 12 13 Vodc-Vsvr (V) 4 280 Vi=0 )- 240 t(s 200 c u d 180 160 140 ro 120 100 10 11 P e 12 13 t e l o 14 15 s b O 2.5 THD=10 % Rl=8 Ohm F= 1 KHz 2 THD=1 % 1 0.5 16 17 0 10 18 11 12 13 14 15 16 17 18 Supply Voltage (V) Supply Voltage (V) bs 10 18 1.5 Distortion vs. Output Power O 17 o r P e t e ol 3 220 16 Ouput Power (W) 3.5 260 15 Output Power vs. Supply Voltage Output DC Offset vs. Supply Voltage 300 du 14 Supply Voltage (V) Supply Voltage (V) Closed Loop gain vs. Frequency Distortion (%) 32 Closed Loop Gain (dB) 31 Vs=12V Rl=8 Ohm 30 29 1 28 F=15 KHz Rl=8 Ohm Pout=0.5W Cin=470nF Cout =1000uF Csvr=470 uF 27 26 25 0.1 24 23 22 F=1 KHz 0.01 0 0.2 0.4 21 0.6 0.8 1 1.2 Output Power (W) 6/10 1.4 1.6 1.8 2 20 0.02 0.2 2 Frequency (KHz) 20 TDA7496L St-By Attenuation vs. Vpin 11 20 10 0 -10 -20 -30 -40 -50 -60 -70 -80 -90 -100 -110 -120 -130 -140 Mute Attenuation vs. Vpin 12 Stand-by Attenuation (dB) 20 10 0 -10 -20 -30 -40 -50 -60 -70 -80 -90 -100 -110 -120 Rl=8 Ohm 0 dB @ Pout=1W 0 0.5 1 1.5 2 2.5 3 3.5 4 4.5 5 Mute Attenuation (dB) Rl=8 Ohm 0 dB @ Pout=1W 0 0.4 0.8 1.2 1.6 e t e ol ) (s PIN DESCRIPTION PIN: SVR t c u od du 2.8 3.2 3.6 4 4.4 4.8 5.2 VS o r P s b O VS VS t e l o s b O 2.4 Vpin # 12 (V) Vpin # 11 (V) r P e 2 ) s ( ct OUT L + - 20K 6K 1K 20K 6K 1K 30K SVR 30K - OUT R + 100µA D97AU585A 7/10 TDA7496L PINS: INL, INR PINS: VAROUT-L, VAROUT-R VS VS 500µA 6K VAROUT-L INn 30K D97AU590 D97AU589 ) s ( ct SVR PIN: VOLUME PIN: MUTE u d o VS ete 10µA MUTE D97AU591 ) (s PINS: PW-GND, S-GND t c u od t e l o 200 l o s VOL r P e Pr b O PINS: OUT R, OUT L VS VS OUT D97AU593 s b O D97AU588 PIN: STBY VS 10µA 200 65K D97AU594 8/10 50µA D97AU592 GND STBY 10K VS TDA7496L mm DIM. MIN. a1 0.51 B 0.85 b TYP. inch MAX. MIN. MAX. 0.020 1.40 0.033 0.50 b1 TYP. 0.38 0.055 0.020 0.50 D 0.015 0.020 24.80 8.80 0.346 e 2.54 0.100 e3 22.86 0.900 u d o F 7.10 0.280 I 5.10 0.201 3.30 Z ) s ( ct 0.976 E L OUTLINE AND MECHANICAL DATA 0.130 1.27 0.050 ) (s r P e s b O t e l o Powerdip 20 t c u d o r P e t e l o s b O 9/10 TDA7496L ) s ( ct u d o r P e t e l o ) (s s b O t c u d o r P e t e l o s b O 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 © 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 10/10