TDA7496L 2W+2W AMPLIFIER WITH DC VOLUME CONTROL

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1 TDA7496L 2W2W AMPLIFIER WITH DC CONTROL 2W2W OUTPUT POWER RL = = 10% VCC = 14V STBY AND MUTE FUNCTIONS LOW TURNON TURNOFF POP NOISE LINEAR CONTROL DC COUPLED WITH POWER OP. AMP. NO BOUCHEROT CELL NO STBY RC INPUT NETWORK SINGLE SUPPLY RANGING UP TO 15V SHORT CIRCUIT PROTECTION THERMAL OVERLOAD PROTECTION INTERNALLY FIXED GAIN SOFT CLIPPING VARIABLE OUTPUT AFTER CON TROL CIRCUIT POWERDIP (1433) PACKAGE DESCRIPTION The TDA7496L is a stereo 2W2W class AB power amplifier assembled in Powerdip Powerdip (1433) ORDERING NUMBER: TDA7496L 1433 package, specially designed for high quality sound, TV and Monitor applications. Features of the TDA7496L include linear volume control, Standby and mute functions. BLOCK DIAGRAM VAROUT_R 1,2,3,13, 18,19, ,16 INR µF 470nF OUTR OP AMP 11 STBY S1 STBY INL 4 MUTE/STBY PROTECTIONS 60K MUTE OUTL 10K 1µF S_ S2 MUTE 470nF OP AMP 1000µF SVR µF 6 5 VAROUT_L 100nF 300K D97AU596A September /10

2 ABSOLUTE MAXIMUM RATINGS Symbol Parameter Value Unit DC Supply Voltage 26 V V IN Maximum Input Voltage 8 Vpp P tot Total Power Dissipation (T case = 60 C) 6 W Tamb Ambient Operating Temperature 0 to 70 C T stg, T j Storage and Junction Temperature 40 to 150 C V 6 Volume CTRL DC voltage 7 V PIN CONNECTION INL VAROUT_L VAROUT_R OUTL OUTR N.C INR 9 12 MUTE SVR STBY Rth with "on board" Square Heatsink vs. copper area. R thja ( C/W) D97AU675 COPPER AREA 35µ THICKNESS PC BOARD D97AU597A Area(cm 2 ) THERMAL DATA Symbol Parameter Value Unit R th jpins Thermal Resistance Junctionpins max. 15 C/W R th jamb (*) Thermal Resistance Junctionambient max. 50 C/W (*) Mounted on PCB with no heatsink ELECTRICAL CHARACTERISTICS (Refer to the test circuit VS = 14V; RL = 8Ω, Rg = 50Ω, Tamb = 25 C). Symbol Parameter Test Condition Min. Typ. Max. Unit VS Supply Voltage Range V Iq Total Quiescent Current ma DCVOS Output DC Offset Referred to No Input Signal 200 mv SVR Potenial VO Quiescent Output Voltage 7 V PO Output Power THD = 10%; R L = 8Ω; W THD = 1%; R L = 8Ω; 1.3 W THD Total Harmonic Distortion GV = 30dB; P O = 1W; f = 1KHz; 0.4 % Ipeak Output Peak Current (internally limited) A Vin Input Signal 2.8 Vrms GV Closed Loop Gain Vol Ctrl > 4.5V db GvLine Monitor Out Gain Vol Ctrl > 4.5V; Zload > Ω db AMin VOL Attenuation at Minimum Volume Vol Ctrl < 0.5V 80 db BW 0.6 MHz 2/10

3 ELECTRICAL CHARACTERISTICS (continued) Symbol Parameter Test Condition Min. Typ. Max. Unit en Total Output Noise f = 20Hz to 22KHz µv Play, max volume f = 20Hz to 22KHz µv Play, max attenuation f = 20Hz to 22KHz µv Mute SR Slew Rate 5 8 V/µs Ri Input Resistance KΩ RVar Out Variable Output Resistance Ω Rload Var Out Variable Output Load 2 KΩ SVR Supply Voltage Rejection f = 1kHz; max volume db C SVR = 470µF; VRIP = 1Vrms f = 1kHz; max attenuation db C SVR = 470µF; VRIP =1Vrms T M Thermal Muting 150 C Ts Thermal Shutdown 160 C MUTE STANDBY & INPUT SELECTION FUNCTIONS VST ON Standby ON Threshold 3.5 V VST OFF Standby OFF Threshold 1.5 V VM ON Mute ON Threshold 3.5 V VM OFF Mute OFF Threshold 1.5 V IqSTBY Quiescent Standby ma AMUTE Mute Attenuation db IstbyBIAS Standby bias current Stand by on VSTBY = 5V VMUTE = 5V 80 µa µa Play or Mute 20 5 µa Mute bias current Mute 1 5 µa ImuteBIAS Play 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. COMPONENT SUGGESTION LARGER THAN SMALLER THAN PURPOSE VALUE SUGGESTION SUGGESTION R1 300K Volume control circuit Larger volume 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 Danger of oscillation bypass 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 C5 100nF Volume control time costant Larger volume regulation time Smaller volume regulation time C6 1000µF Output DC Lower low frequency cutoff Higher low frequency cutoff decoupling C7 1µF Mute time costant Larger mute on/off time Smaller mute on/off time C8 1000µF Output DC Lower low frequency cutoff Higher low frequency cutoff decoupling C9 100nF Supply voltage bypass Danger of oscillation 3/10

4 Figure 1A. Application Circuit. C1 1000µF VAROUT_R C9 0.1µF PW_ 1,2,3,13, 18,19, ,16 INR C2 470nF 9 14 C8 1000µF PW_ OUTR OP AMP 11 S1 STBY MUTE/STBY PROTECTIONS 12 R2 10K S_ INL C3 470nF 4 OP AMP 60K 17 C7 1µF C6 1000µF OUTL PW_ S2 MUTE SVR 10 C4 470µF C5 100nF 6 5 R1 300K VAROUT_L TP1 VOL P1 50K LOG Figure 1B. PCB and Component Layout of the Fig. 1A (1.25:1 scale) D97AU598A 4/10

5 MUTE STANDBY TRUTH TABLE MUTE STBY OPERATING CONDITION H H STANDBY L H STANDBY H L MUTE L L PLAY Turn ON/OFF Sequences (for optimizing the POP performances) A) USING MUTE AND STANDBY FUNCTIONS (V) STBY pin#11 (V) 5 VSVR pin#10(v) 2.5V MUTE pin#12 (V) 5 INPUT (mv) VOUT (V) IQ (ma) OFF STBY MUTE PLAY MUTE STBY OFF D97AU683 B) USING ONLY THE MUTE FUNCTION To simplify the application, the standby pin can be connected directly to Ground. During the ON/OFF transitions is recommend to respect the following conditions. At the turnon, the transition mute play must be made when the SVR pin is higher than 2.5V At the turnoff, the TDA7496L must be brought to mute from the play condition when the SVR pin is higher than 2.5V. 5/10

6 Quiescent current vs. Supply Voltage Output DC Voltage vs. Supply Voltage Iq (ma) Vi= Supply Voltage (V) Vodc (V) Vi= Supply Voltage (V) Output DC Offset vs. Supply Voltage Output Power vs. Supply Voltage VodcVsvr (V) Vi= Supply Voltage (V) Ouput Power (W) Rl=8 Ohm F= 1 KHz THD=10 % THD=1 % Supply Voltage (V) Distortion vs. Output Power Closed Loop gain vs. Frequency Distortion (%) Vs=12V Rl=8 Ohm F=1 KHz F=15 KHz Output Power (W) Closed Loop Gain (db) Rl=8 Ohm Pout=0.5W Cin=470nF Cout =1000uF Csvr=470 uf Frequency (KHz) 6/10

7 StBy Attenuation vs. Vpin 11 Mute Attenuation vs. Vpin Standby Attenuation (db) Rl=8 Ohm 0 Pout=1W Vpin # 11 (V) Mute Attenuation (db) Rl=8 Ohm 40 0 Pout=1W Vpin # 12 (V) PIN DESCRIPTION PIN: SVR OUT L 20K 6K 1K SVR 20K 6K 1K OUT R 100µA D97AU585A 7/10

8 PINS: INL, INR PINS: VAROUTL, VAROUTR INn 6K 500µA VAROUTL SVR D97AU589 D97AU590 PIN: PIN: MUTE 10µA MUTE K VOL 50µA D97AU591 D97AU592 PINS: PW, S PINS: OUT R, OUT L D97AU593 OUT D97AU588 PIN: STBY 10µA STBY K D97AU594 8/10

9 DIM. mm inch MIN. TYP. MAX. MIN. TYP. MAX. OUTLINE AND MECHANICAL DATA a B b b D E e e F I L Z Powerdip 20 9/10

10 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 10/10

Obsolete Product(s) - Obsolete Product(s)

Obsolete Product(s) - Obsolete Product(s) 11W+11W AMPLIFIER WITH DC CONTROL 11+11W OUTPUT POWER R L = Ω @THD = % V CC = 2V ST-BY AND MUTE FUNCTIONS LOW TURN-ON TURN-OFF POP NOISE LINEAR CONTROL DC COUPLED WITH POWER OP. AMP. NO BOUCHEROT CELL