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| TDA7269A 14W+14W STEREO AMPLIFIER WITH MUTE & ST-BY s s s WIDE SUPPLY VOLTAGE RANGE UP TO +20V SPLIT SUPPLY HHIGH OUTPUT POWER 14+14W @THD = 10%, RL= 8, VS = 16V NO POP AT TURN-ON/OFF MUTE (POP FREE) STAND-BY FEATURE (LOW Iq) SHORT CIRCUIT PROTECTION TO GND THERMAL OVERLOAD PROTECTION s s s s s Multiwatt11 ORDERING NUMBER: TDA7269A DESCRIPTION The TDA7269A is class AB Dual Audio Power amplifier assembled in the Multiwatt package, specially deFigure 1. Typical Application Circuit signed for high quality sound application as Hi-Fi music centers and stereo TV sets. +VS 1000F MUTE/ ST-BY IN (L) 1F 3 15K 1F 5 7 + - 4 OUT (L) 18K 4.7 100nF 560 8 15K +5V P 18K GND 9 10 IN- (L) RL (L) IN- (R) 560 18K 1F IN (R) 11 + 1 6 -VS 1000F 2 OUT (R) 4.7 100nF RL (R) D94AU085 June 2003 1/9 TDA7269A ABSOLUTE MAXIMUM RATINGS Symbol VS IO Ptot Top Tstg, Tj DC Supply Voltage Output Power Current (internally limited) Total Power Dissipation (Tamb = 70C) Operating Temperature Storage and Junction Temperature Parameter Value 22 3 40 0 to 70 -40 to 150 Unit V A W C C PIN CONNECTION (Top view) 11 10 9 8 7 6 5 4 3 2 1 IN+(1) IN-(1) GND IN-(2) IN+(2) -VS MUTE OUTPUT(2) +VS OUTPUT(1) -VS TAB CONNECTED TO PIN 6 D95AU316 THERMAL DATA Symbol Rth j-case Parameter Thermal Resistance Junction-case Max. Value 2.8 Unit C/W Figure 2. Single Supply Application D1 5.1V R1 10K PLAY 5V 0 MUTE C1 1F R3 15K MUTE Q1 BSX33 R2 15K C2 100F C3 1F IN (L) 5 7 + 8 9 C4 1F IN (R) 11 IN- (L) 3 4 OUT (L) R4 30K R5 1K + 2 IN- (R) R6 30K R7 1K C9 470F +VS C5 1000F C6 0.1F R8 4.7 C7 0.1F C10 470F OUT (L) 10 1 6 GND OUT (R) R9 4.7 C8 0.1F OUT (R) D96AU444A 2/9 TDA7269A ELECTRICAL CHARACTERISTCS (Refer to the test circuit VS = 16V; RL = 8; RS = 50; GV = 30dB, f = 1KHz; Tamb = 25C, unless otherwise specified) Symbol VS Parameter Supply Voltage Range RL = 8 RL = 4 Iq VOS Ib PO Total Quiescent Current Input Offset Voltage Non Inverting Input Bias Current Output Power THD = 10%; RL = 8; VS = 12.5V; RL = 4; THD = 1%; RL = 8; VS = 12.5V; RL = 4; THD Total Harmonic Distortion RL = 8; PO = 1W; f = 1KHz; RL = 8; PO = 0.1 to 7W; f = 100Hz to 15KHz; RL = 4; PO = 1W; f = 1KHz; RL = 4; VS = 10V; PO = 0.1 to 5W; f = 100Hz to 15KHz; CT SR GOL eN Ri SVR Tj Cross Talk Slew Rate Open Loop Voltage Gain Total Output Noise Input Resistance Supply Voltage Rejection (each channel) Thermal Shut-down Junction Temperature f = 100Hz; VR = 0.5V A Curve f = 20Hz to 22KHz 15 f = 1KHz; f = 10KHz; 50 6.5 70 60 10 80 3 4 20 60 145 8 0.02 1 12 8 9 6 -25 500 14 10 11 7.5 0.03 0.7 Test Condition Min. 5 5 60 Typ. Max. 20 15 100 25 Unit V V mA mV nA W W W W % % % % dB dB V/s dB V V K dB C MUTE FUNCTION [ref +VS] (*) VTMUTE AMUTE Mute /Play threshold Mute Attenuation -7 60 -6 70 -5 V dB STAND-BY FUNCTIONS [ref: +VS] (only for Split Supply) VTST-BY AST-BY IqST-BY Stand-by Mute threshold Stand-by Attenuation Quiescent Current @ Stand-by -3.5 -2.5 110 3 6 -1.5 V dB mA (*) In mute condition the current drawn from Pin 5 must be 650A 3/9 TDA7269A MUTE STAND-BY FUNCTION The pin 5 (MUTE/STAND-BY) controls the amplifier status by two different thresholds, referred to +VS. - When Vpin5 higher than = +VS -2.5V the amplifier is in Stand-by mode and the final stage generators are off. - When Vpin5 between +VS -2.5V and +VS -6V the final stage current generators are switched on and the amplifier is in mute mode. - When Vpin5 is lower than +VS -6V the amplifier is play mode. Figure 3. +VS (V) 20 t -VS -20 VIN (mV) Vpin5 (V) VS VS-2.5 VS-6 VS-10 Iq (mA) 0 VOUT (V) OFF STDBY MUTE PLAY STDBY PLAY OFF STDBY D94AU086 MUTE MUTE MUTE 4/9 TDA7269A Figure 4. Test and Application Circuit (Stereo Configuration) +VS C4 C5 R2 C3 MUTE/ ST-BY IN (L) C1 +VS 5 7 + 8 3 R1 SW1 ST-BY DZ Q1 4 OUT (L) R5 IN- (L) R6 R7 C8 RL (L) R4 SW2 MUTE R3 GND 9 10 IN- (R) R8 R9 C2 IN (R) 11 + 1 6 -VS C7 2 OUT (R) R10 C9 RL (R) C6 D94AU087B APPLICATION SUGGESTIONS (Demo Board Schematic) The recommended values of the external components are those shown the demoboard schematic different values can be used, the following table can help the designer. COMPONENT R1 R2 R3 R4 R5, R8 R6, R9 R7, R10 C1, C2 C3 C4, C6 C5, C7 C8, C9 Dz SUGGESTION VALUE 10K 15K 18K 15K 18K 560 4.7 1F 1F 1000F 0.1F 0.1F 5.1V Frequency Stability Input DC Decoupling St-By/Mute Time Constant Supply Voltage Bypass Supply Voltage Bypass Frequency Stability Mute Circuit Larger On/Off Time PURPOSE Mute Circuit Mute Circuit Mute Circuit Mute Circuit Closed Loop Gain Setting (*) LARGER THAN RECOMMENDED VALUE Increase of Dz Biasing Current Vpin #5 Shifted Downward Vpin #5 Shifted Upward Vpin #5 Shifted Upward Increase of Gain Decrease of Gain Danger of Oscillations Danger of Oscillations Higher Low Frequency Cutoff Smaller On/Off Time Danger of Oscillations Danger of Oscillations Vpin #5 Shifted Upward Vpin #5 Shifted Downward Vpin #5 Shifted Downward SMALLER THAN RECOMMENDED VALUE (*) Closed loop gain has to be 25dB 5/9 TDA7269A BRIDGE APPLICATION Another application suggestion concerns the Bridge configuration , where the two power amplifiers are connected as shown by the schematic diagrams of figure 5 "Split Power Supply" , and figure 6 "Single Power Supply". This application shows,however, some operative limits due to dissipation and current capability of the output stage. For this reason we recommend to use the TDA7269A in BTL with the following supply voltages depending on the used load impedance (for the single supply consider double Vs) : Vs (V) 14 11 10 Rload (ohm) 8 6 4 The detected characteristics of THD vs Pout are shown in figg: 7, 8 and 9 for the different load impedances. With Rload = 8ohm , Vs = 14V the maximum output power obtainable is 30W at THD = 10% (fig. 9). With Rload = 6ohm , Vs = 12V the maximum output power obtainable is 28W at THD = 10% (fig. 8). With Rload = 4ohm , Vs = 10V the maximum output power obtainable is 20W at THD=10% (fig. 7). We suggest not to exceed the suggested supply voltages in order to avoid the current limiter intervention. Figure 5. Split Power Supply Application Diagram ST-BY/ MUTE C3 0.1F C1 5 7 + 8 3 4 C4 1000F R5 4.7 +VS IN 1F C7 0.1F R1 36K R2 560 R4 560 R3 36K C8 5.6nF 9 RL 10 C2 11 + 1 6 2 1F R6 4.7 -VS C6 1000F C9 0.1F D94AU190 C5 0.1F 6/9 TDA7269A Figure 6. Single Power Supply Application Diagram 5.1V 10K 1F 15K MUTE PLAY 5V 0 MUTE IN (L) 1F +VS 1000F 3 + 8 IN- (L) 1K + 4 OUT (L) 30K 4.7 0.1F OUT 0.1F 5 7 BSX33 15K 9 100F 1F IN (R) 11 2 IN- (R) 30K 4.7 0.1F 1K Figure 7. Distortion vs Output Power THD(%) 10 5 2 1 0.5 0.2 0.1 0.05 0.02 0.01 600m 1 2 3 4 5 6 7 89 Pout (W) 20 30 40 Vs =+/- 10V Rload =4 ohm f=1KHz Figure 8. Distortion vs Output Power THD(%) 10 5 2 1 0.5 0.2 0.1 0.05 0.02 0.01 600m 1 2 3 4 5 6 7 89 Pout (W) 20 30 40 Vs =+/- 12V Rload =6 ohm f=1KHz 10 1 6 GND 5.6nF D03AU1518 OUT (R) Figure 9. Distortion vs Output Power THD(%) 10 5 2 1 0.5 0.2 0.1 0.05 0.02 0.01 600m 1 2 3 4 5 6 7 89 Pout (W) 20 30 40 Vs =+/- 14V Rload =8 ohm f=1KHz 7/9 TDA7269A mm 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 17.4 17.25 10.3 2.65 4.25 4.73 1.9 1.9 3.65 4.55 5.08 17.5 10.7 22.2 22.1 0.49 0.88 1.45 16.75 19.6 20.2 22.5 22.5 18.1 17.75 10.9 2.9 4.85 5.43 2.6 2.6 3.85 0.862 0.854 0.685 0.679 0.406 0.104 0.167 0.186 0.075 0.075 0.144 0.179 0.200 0.689 0.421 0.874 0.87 1.7 17 1 0.55 0.95 1.95 17.25 0.019 0.035 0.057 0.659 0.772 0.795 0.886 0.886 0.713 0.699 0.429 0.114 0.191 0.214 0.102 0.102 0.152 0.067 0.669 TYP. MAX. 5 2.65 1.6 0.039 0.022 0.037 0.077 0.679 MIN. inch TYP. MAX. 0.197 0.104 0.063 DIM. OUTLINE AND MECHANICAL DATA Multiwatt11 V 8/9 TDA7269A 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 (c) 2002 STMicroelectronics - All Rights Reserved Australia - Brazil - Canada - China - Finland - France - Germany - Hong Kong - India - Israel - Italy - Japan -Malaysia - Malta - Morocco Singapore - Spain - Sweden - Switzerland - United Kingdom - United States. http://www.st.com 9/9 |
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