Download: 14 + 14W STEREO AMPLIFIER WITH MUTE & ST-BY
TDA7269A 14 + 14W STEREO AMPLIFIER WITH MUTE & ST-BY WIDE SUPPLY VOLTAGE RANGE UP TO ±20V SPLIT SUPPLY HIGH OUTPUT POWER 14 + 14W @ THD =10%, RL = 8Ω, VS = +16V NO POP AT TURN-ON/OFF MUTE (POP FREE) STAND-BY FEATURE (LOW Iq) SHORT CIRCUIT PROTECTION TO GND THERMAL OVERLOAD PROTECTION Multiwatt11 ORDERING NUMBER: TDA7269A DESCRIPTION The TDA7269A is class AB dual Audio power am- plifier assembled in the Multiwatt package, spe- cially designed for high quality sound application as Hi-Fi music centers and stereo TV sets. Figure 1: Typical Application Circuit +VS 1000µF 15K 1µF MUTE/ ST-BY 35 IN ...
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TDA7269A 14 + 14W STEREO AMPLIFIER WITH MUTE & ST-BY WIDE SUPPLY VOLTAGE RANGE UP TO ±20V SPLIT SUPPLY HIGH OUTPUT POWER 14 + 14W @ THD =10%, RL = 8Ω, VS = +16V NO POP AT TURN-ON/OFF MUTE (POP FREE) STAND-BY FEATURE (LOW Iq) SHORT CIRCUIT PROTECTION TO GND THERMAL OVERLOAD PROTECTION Multiwatt11 ORDERING NUMBER: TDA7269A
DESCRIPTION
The TDA7269A is class AB dual Audio power am- plifier assembled in the Multiwatt package, spe- cially designed for high quality sound application as Hi-Fi music centers and stereo TV sets. Figure 1: Typical Application Circuit +VS 1000µF 15K 1µF MUTE/ ST-BY 35 IN (L) 7 + 4 OUT (L) 1µF - 18K 4.7Ω RL (L) 8 IN- (L) 100nF 15K 18K GND 9 560Ω +5V µP 10 IN- (R) 560Ω 18K 1µF - 2 OUT (R) IN (R) 11 + 4.7Ω16RL (R) -VS 100nF 1000µF D94AU085 July 1998 1/7,ABSOLUTE MAXIMUM RATINGS
Symbol Parameter Value Unit VS DC Supply Voltage ±22 V IO Output Peak Current (internally limited) 3 A Ptot Power Dissipation Tcase = 70°C 40 W Top Operating Temperature 0 to 70 °C Tstg, Tj Storage and Junction Temperature -40 to +150 °CPIN CONNECTION (Top view)
11 IN+(1) 10 IN-(1) 9 GND 8 IN-(2) 7 IN+(2) 6 -VS 5 MUTE 4 OUTPUT(2) 3 +VS 2 OUTPUT(1) 1 -VS TAB CONNECTED TO PIN 6 D95AU316THERMAL DATA
Symbol Description Value Unit Rth j-case Thermal Resistance Junction-case Max 2.8 °C/WSINGLE SUPPLY APPLICATION
+V D1 5.1V S R1 C1 R3 C5 C6 10K 1µF 15K 1000µF 0.1µF MUTE/ST-BY 3PLAY
5V Q1 IN (L) 7 C9 470µF BSX33 + 4 OUT (L) 0 C3 1µF - MUTE R2 R4 R8 OUT 15K 30K 4.7Ω 8 IN- (L) (L) C7 C2 R5 0.1µF 100µF C4 1µF 1K IN (R) 11 + C10 470µF2 IN- (R) - R6 R9 OUT 30K 4.7Ω 10 OUT (R) (R) C8 1 0.1µF6 R7 1KGND
D96AU444 2/7,ELECTRICAL CHARACTERISTICS (Refer to the test circuit, VS = + 16V; RL = 8Ω; RS = 50Ω; GV = 30dB; f = 1KHz; Tamb = 25°C, unless otherwise specified.)
Symbol Parameter Test Condition Min. Typ. Max. Unit VS Supply Range RL = 8Ω ; +5 +20 V RL = 4Ω ; +5 +15 V Iq Total Quiescent Current 60 100 mA VOS Input Offset Voltage –25 +25 mV Ib Non Inverting Input Bias Current 500 nA PO Output Power THD = 10% RL = 8Ω ; 12 14 W VS + 12.5V; RL = 4Ω 8 10 W THD = 1% RL = 8Ω ; 9 11 W VS + 12.5V; RL = 4Ω 6 7.5 W THD Total Harmonic Distortion RL = 8Ω ; PO = 1W; f = 1KHz 0.03 % RL = 8Ω ; 0.7 % PO = 0.1 to 7W; f = 100Hz to 15KHz RL = 4Ω ; PO = 1W; f = 1KHz 0.02 % RL = 4Ω ; VS + 10V; 1 % PO = 0.1 to 5W; f = 100Hz to 15KHz CT Cross Talk f = 1KHz 70 dB f = 10KHz 50 60 dB SR Slew Rate 6.5 10 V/µs GOL Open Loop Voltage Gain 80 dB eN Total Input Noise A Curve 3 µV f = 20Hz to 22KHz48µV Ri Input Resistance 15 20 KΩ SVR Supply Voltage Rejection fr = 100Hz Vr = 0.5V 60 dB (each channel) Tj Thermal Shut-down 145 °C Junction Temperature MUTE FUNCTION [ref: +VS] (*) VTMUTE Mute / Play Threshold -7 -6 -5 V AM Mute Attenuation 60 70 dB STAND-BY FUNCTION [ref: +VS] (Only for Split Supply) VTST-BY Stand-by / Mute Threshold -3.5 -2.5 -1.5 V AST-BY Stand-by Attenuation 110 dB Iq ST-BY Quiescent Current @ Stand-by36mA (*) In mute condition the current drawn from pin 5 must be ≤ 650µA. 3/7, MUTE STAND-BY FUNCTION - when Vpin5 is between +VS - 2.5V and +VS - 6V the final stage current generators are The pin 5 (MUTE/STAND-BY) controls the ampli- switched on and the amplifier is in mute fier status by two different thresholds, referred to mode +VS. - when Vpin5 is lower than +VS - 6V the am- - When Vpin5 higher than = +VS - 2.5V the plifier is play mode. amplifier is in Stand-by mode and the final stage generators are off Figure 2 +VS (V) t -VS -20VIN
(mV) Vpin5 (V)VS
VS-2.5 VS-6 VS-10 Iq (mA)VOUT
(V) OFF PLAY STDBY PLAY OFF STDBY STDBY MUTE D94AU086 MUTE MUTE MUTE 4/7,Figure 3: Test and Application Circuit (Stereo Configuration)
+VS C4 C5 R2 C3 +VS MUTE/ ST-BY 35 R1 IN (L) 7 + 4 OUT (L) SW1 C1 - DZ R5 R7 RL (L) 8 IN- (L) C8 R4 R3 GND 9 R6 SW2 10 IN- (R) R9 R8 C2 - 2 OUT (R) IN (R) 11 + R1016RL (R) -VS C9 C7 C6 D94AU087APPLICATIONS SUGGESTION nents are those shown are the demo board sche-
(Demo Board Schematic) matic different values can be used: the following table can help the designer.The recommended values of the external compo-
COMPONENTS RECOMMENDED PURPOSE LARGER THAN SMALLER THANVALUE RECOMMENDED VALUE RECOMMENDED VALUE R1 10KΩ Mute Circuit Increase of DzBiasing Current R2 15KΩ Mute Circuit Vpin # 5 Shifted Downward Vpin # 5 Shifted Upward R3 18KΩ Mute Circuit Vpin # 5 Shifted Upward Vpin # 5 Shifted Downward R4 15KΩ Mute Circuit Vpin # 5 Shifted Upward Vpin # 5 Shifted Downward R5, R8 18KΩ Closed Loop Gain Increase of Gain R6, R9 560Ω Setting (*) Decrease of Gain R7, R10 4.7Ω Frequency Stability Danger of Oscillations Danger of Oscillations C1, C2 1µF Input DC Higher Low FrequencyDecoupling Cutoff µ St-By/Mute TimeC31FConstant Larger On/Off Time Smaller On/Off Time C4, C6 1000µF Supply VoltageBypass Danger of Oscillations µ Supply VoltageC5, C7 0.1 F Bypass Danger of Oscillations C8, C9 0.1µF Frequency Stability Dz 5.1V Mute Circuit (*) Closed loop gain has to be => 25dB 5/7,MULTIWATT11 PACKAGE MECHANICAL DATA
mm inch DIM. MIN. TYP. MAX. MIN. TYP. MAX. A 5 0.197 B 2.65 0.104 C 1.6 0.063D10.039 E 0.49 0.55 0.019 0.022 F 0.88 0.95 0.035 0.037 G 1.57 1.7 1.83 0.062 0.067 0.072 G1 16.87 17 17.13 0.664 0.669 0.674 H1 19.6 0.772 H2 20.2 0.795 L 21.5 22.3 0.846 0.878 L1 21.4 22.2 0.843 0.874 L2 17.4 18.1 0.685 0.713 L3 17.25 17.5 17.75 0.679 0.689 0.699 L4 10.3 10.7 10.9 0.406 0.421 0.429 L7 2.65 2.9 0.104 0.114 M 4.1 4.3 4.5 0.161 0.169 0.177 M1 4.88 5.08 5.3 0.192 0.200 0.209 S 1.9 2.6 0.075 0.102 S1 1.9 2.6 0.075 0.102 Dia1 3.65 3.85 0.144 0.152 6/7, 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. Specification 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 1998 STMicroelectronics – Printed in Italy – All Rights Reserved STMicroelectronics GROUP OF COMPANIES Australia - Brazil - Canada - China - France - Germany - Italy - Japan - Korea - Malaysia - Malta - Mexico - Morocco - The Netherlands - Singapore - Spain - Sweden - Switzerland - Taiwan - Thailand - United Kingdom - U.S.A. 7/7]15
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