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| (R) TDA7264 TDA7264A 25 + 25W STEREO AMPLIFIER WITH MUTE/ST-BY WIDE SUPPLY VOLTAGE RANGE (UP TO 50V ABS MAX.) SPLIT SUPPLY HIGH OUTPUT POWER: 25 + 25W @ THD =10%, RL = 8, VS = +20V NO POP AT TURN-ON/OFF MUTE (POP FREE) STAND-BY FEATURE (LOW IQ) FEW EXTERNAL COMPONENTS SHORT CIRCUIT PROTECTION THERMAL OVERLOAD PROTECTION DESCRIPTION The TDA7264/TDA7264A is class AB dual Audio power amplifier assembled in the Multiwatt package, specially designed for high quality sound apFigure 1: Typical Application Circuit for TDA7264 Multiwatt 8 Multiwatt 11 ORDERING NUMBER: TDA7264 (Multiwatt 8) TDA7264A (Multiwatt 11) plication as Hi-Fi music centers and stereo TV sets. +V S 1000F 15K 1F MUTE/ ST-BY IN (L) 1F +VS 4 6 + 2 3 OUT (L) 4.7 100nF RL (L) 15K +5V P 18K GND 7 1F IN (R) 8 + 5 -VS 1 OUT (R) 4.7 100nF RL (R) 1000F D94AU069A April 1999 1/12 TDA7264 - TDA7264A Figure 2: Typical Application Circuit for TDA7264A +V S 1000F MUTE/ ST-BY IN (L) 1F 3 15K 1F 5 7 + - 4 OUT (L) 4.7 100nF RL (L) 15K +5V P 18K GND 9 1F IN (R) 11 + 1 6 -V S 1000F 2 OUT (R) 4.7 100nF RL (R) D98AU955 ABSOLUTE MAXIMUM RATINGS Symbol VS IO Ptot Tstg, Tj DC Supply Voltage Output Peak Current (internally limited) Power Dissipation T case = 70C Storage and Junction Temperature Parameter Value 50 4.5 30 -40 to +150 Unit V A W C PIN CONNECTION (Top view) Multiwatt 8 Multiwatt 11 11 IN(1) NOT CONNECTED GND NOT CONNECTED IN(2) -VS STBY/MUTE OUTPUT(2) +VS OUTPUT(1) -VS 8 7 6 5 4 3 2 1 Tab connected to pin 5 D94AU096 IN (1) GND IN (2) -VS MUTE/ST-BY OUTPUT (2) +VS OUTPUT (1) 10 9 8 7 6 5 4 3 2 1 TAB CONNECTED TO PIN 6 D98AU956 THERMAL DATA Symbol Rth j-case 2/12 Description Thermal Resistance Junction-case Max Value 2 Unit C/W TDA7264 - TDA7264A ELECTRICAL CHARACTERISTICS (Refer to the test circuit, VS + 20V; RL = 8; Rs =50; f = 1KHz; Tamb = 25C, unless otherwise specified.) Symbol VS Iq PO PO Parameter Supply Range Total Quiescent Current Music Output Power (*) Output Power THD = 10%; RL = 8 ; VS + 22.5V THD = 10% R L = 8 ; VS + 16V; RL = 4 THD = 1% R L = 8 ; VS + 16V; RL = 4 THD Total Harmonic Distortion RL = 8 ; PO = 1W; f = 1KHz R L = 8 ; PO = 0.1 to 15W; f = 100Hz to 15KHz R L = 4 ; PO = 1W; f = 1KHz R L = 4 ; VS + 16V; PO = 0.1 to 12W; f = 100Hz to 15KHz CT SR GV GV eN Ri SVR Tj Cross Talk Slew Rate Closed Loop Voltage Gain Voltage Gain Matching Total Input Noise Input Resistance Supply Voltage Rejection (each channel) Thermal Shut-down Junction Temperature Mute / Play Threshold Mute Attenuation Stand-by / Mute Threshold Stand-by Attenuation Quiescent Current @ Stand-by -7 60 -3.5 fr = 100Hz; Vripple = 0.5VRMS A Curve f = 20Hz to 22KHz 15 29 f = 1KHz f = 10KHz 70 60 10 30 0.2 2.5 3.5 20 60 145 8 31 0.03 1 20 Test Condition Min. +5 80 32 Typ. Max. +22.5 130 Unit V mA W 25 25 20 20 0.02 0.5 W W W W % % % % dB dB V/s dB dB V V K dB C MUTE FUNCTION [ref: +VS] VTMUTE AM VTST-BY AST-BY Iq ST-BY -6 90 -2.5 110 3 -1.5 -5 V dB V dB mA STAND-BY FUNCTION [ref: +VS] Note : (*) FULL POWER up to. VS = 22.5V with RL = 8 and VS = 16V with RL = 4 MUSIC POWER is the maximal power which the amplifier is capable of producing across the rated load resistance (regardless of non linearity) 1 sec after the application of a sinusoidal input signal of frequency 1KHz. 3/12 TDA7264 - TDA7264A Figure 3: Demo Board Schematic TDA7264 +VS R2 15K C3 1F C1 1F C4 1000F C5 100nF MUTE/ ST-BY IN (L) +VS 4 6 + 2 R1 SW1 ST-BY Q1 3 OUT (L) R5 4.7 C8 100nF DZ R4 15K SW2 MUTE R3 18K GND 7 RL (L) C2 1F IN (R) 8 + 5 -VS C7 100nF 1 OUT (R) R6 4.7 C9 100nF RL (R) D94AU068B C6 1000F Figure 3a: P.C. Board And Component Layout of the Demo Board Schematic TDA7264 (1:1 Scale) 4/12 TDA7264 - TDA7264A Figure 4: Demo Board Schematic TDA7264A +VS C4 C5 R2 C3 MUTE/ ST-BY IN (L) C1 +VS 5 7 + 3 R1 SW1 ST-BY DZ Q1 4 OUT (L) R7 C8 RL (L) R4 SW2 MUTE R3 GND 9 C2 IN (R) 11 + 1 6 -VS C7 2 OUT (R) R10 C9 RL (R) C6 D98AU957 Figure 4a: P.C. Board And Component Layout of the Demo Board Schematic TDA7264A (1:1 Scale) TDA7264A 5/12 TDA7264 - TDA7264A APPLICATIONS SUGGESTION for TDA7264 (Demo Board Schematic) The recommended values of the external compoCOMPONENTS R1 R2 R3 R4 R5, R6 C1, C2 C3 C4, C6 C5, C7 C8, C9 Dz Q1 RECOMMENDED VALUE 10K 15K 18K 15K 4.7 1F 1F 1000F 0.1F 0.1F 5.1V BC107 PURPOSE Mute Circuit Mute Circuit Mute Circuit Mute Circuit Frequency Stability Input DC Decoupling St-By/Mute Time Constant Supply Voltage Bypass Supply Voltage Bypass Frequency Stability Mute Circuit Mute Circuit Larger On/Off Time nents are those shown on the demo board schematic. Different values can be used: the following table can help the designer. LARGER THAN RECOMMENDED VALUE Increase of Dz Biasing Current Vpin # 4 Shifted Downward Vpin # 4 Shifted Upward Vpin # 4 Shifted Upward Danger of Oscillations Vpin # 4 Shifted Upward Vpin # 4 Shifted Downward Vpin # 4 Shifted Downward Danger of Oscillations Higher Low Frequency Cutoff Smaller On/Off Time Danger of Oscillations Danger of Oscillations SMALLER THAN RECOMMENDED VALUE APPLICATIONS SUGGESTION for TDA7264A (Demo Board Schematic) The recommended values of the external compoCOMPONENTS R1 R2 R3 R4 R7, R10 C1, C2 C3 C4, C6 C5, C7 C8, C9 Dz Q1 RECOMMENDED VALUE 10K 15K 18K 15K 4.7 1F 1F 1000F 0.1F 0.1F 5.1V BC107 PURPOSE Mute Circuit Mute Circuit Mute Circuit Mute Circuit Frequency Stability Input DC Decoupling St-By/Mute Time Constant Supply Voltage Bypass Supply Voltage Bypass Frequency Stability Mute Circuit Mute Circuit nents are those shown are the demo board schematic different values can be used: the following table can help the designer. LARGER THAN RECOMMENDED VALUE Increase of Dz Biasing Current Vpin # 5 Shifted Downward Vpin # 5 Shifted Upward Vpin # 5 Shifted Upward Danger of Oscillations Vpin # 5 Shifted Upward Vpin # 5 Shifted Downward Vpin # 5 Shifted Downward Danger of Oscillations Higher Low Frequency Cutoff Larger On/Off Time Smaller On/Off Time Danger of Oscillations Danger of Oscillations SMALLER THAN RECOMMENDED VALUE MUTE, STAND-BY TRUTH TABLE SW1 A A B B 6/12 SW2 A B B A STAND-BY STAND-BY MUTE PLAY TDA7264 - TDA7264A Figure 5: Quiescent Current vs. Supply Voltage Figure 6: Frequency Response Figure 7: Output Power vs Supply Voltage Figure 8: Distortion vs. Output Power Figure 9: Crosstalk vs. Frequency Figure 10: Supply Voltage Rejection vs. Fequency 7/12 TDA7264 - TDA7264A Figure 11: Attenuation& Total Quiescent Current vs. Vpin4 Voltage Figure 12: Power Dissipation vs. Output Power 8/12 TDA7264 - TDA7264A MUTE STAND-BY FUNCTION The pin 4 (MUTE/STAND-BY) controls the amplifier status by two different thresholds, referred to +VS. - When Vpin4 higher than = +VS - 2.5V the amplifier is in Stand-by mode and the final stage generators are off Figure 13 +VS (V) 20 - when Vpin4 is between +VS - 2.5V and +VS - 6V the final stage current generators are switched on and the amplifier is in mute mode - when Vpin4 is lower than +VS - 6V the amplifier is play mode. t -VS -20 VIN (mV) Vpin4 (V) VS VS-2.5 VS-6 VS-10 Iq (mA) 0 VOUT (V) OFF STDBY MUTE PLAY STDBY PLAY OFF STDBY D94AU084 MUTE MUTE MUTE 9/12 TDA7264 - TDA7264A DIM. MIN. A B C E F G G1 H1 H2 L L2 L3 L4 L7 S S1 U Z Dia1 20.35 17.05 17.25 10.3 2.65 1.9 1.9 0.40 0.70 3.65 0.49 0.78 2.40 17.64 19.6 mm TYP. MAX. 5 2.65 1.6 0.55 0.85 2.54 17.78 2.68 17.92 0.019 0.030 0.094 0.69 0.772 20.2 20.65 17.20 17.5 10.7 17.35 17.75 10.9 2.9 2.6 2.6 0.55 0.85 3.85 0.80 0.67 0.679 0.406 0.104 0.075 0.075 0.015 0.028 0.144 MIN. inch TYP. MAX. 0.197 0.104 0.063 0.022 0.033 0.10 0.70 0.105 0.71 OUTLINE AND MECHANICAL DATA 0.795 0.81 0.68 0.689 0.421 0.68 0.699 0.429 0.114 0.102 0.102 0.022 0.034 0.152 Multiwatt8 (Pin. 5 Gnd) 10/12 TDA7264 - TDA7264A DIM. 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 mm 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 OUTLINE AND MECHANICAL DATA Multiwatt11 V 11/12 TDA7264 - TDA7264A 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 (c) 1999 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. http://www.st.com 12/12 |
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