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 = 8Ω, 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 ap- Multiwatt 8 Multiwatt 11 ORDERING NUMBER: TDA7264 (Multiwatt 8) TDA7264A (Multiwatt 11) plication as Hi-Fi music centers and stereo TV sets. Figure 1: Typical Application Circuit for TDA7264 +V S 15K 1µF MUTE/ ST-BY IN (L) +5V 2 4 6 + 3 - 1µF 15K 1000µF +VS 18K OUT (L) 4.7Ω RL (L) 100nF GND 7 µP 1µF IN (R) 8 + 1000µF 1 5 -VS OUT (R) 4.7Ω RL (R) 100nF D94AU069A April 1999 1/12 TDA7264 - TDA7264A Figure 2: Typical Application Circuit for TDA7264A +V S 15K 1000µF 1µF MUTE/ ST-BY 3 5 IN (L) 7 + 1µF 15K 4 OUT (L) - 18K 4.7Ω RL (L) 100nF GND 9 IN (R) 11 µP +5V 1µF - 2 OUT (R) + 1 4.7Ω 6 -V S RL (R) 100nF 1000µF D98AU955 ABSOLUTE MAXIMUM RATINGS Symbol Value Unit VS DC Supply Voltage 50 V IO Output Peak Current (internally limited) 4.5 A Power Dissipation T case = 70°C 30 W -40 to +150 °C Ptot Tstg, Tj Parameter Storage and Junction Temperature PIN CONNECTION (Top view) Multiwatt 8 Multiwatt 11 11 IN(1) 10 NOT CONNECTED 8 IN (1) 7 GND 9 GND 6 IN (2) 8 NOT CONNECTED 5 -VS 7 IN(2) 6 4 MUTE/ST-BY -VS 5 STBY/MUTE 3 OUTPUT (2) 4 OUTPUT(2) 2 +VS 3 +VS 1 OUTPUT (1) 2 OUTPUT(1) 1 -VS Tab connected to pin 5 D94AU096 TAB CONNECTED TO PIN 6 D98AU956 THERMAL DATA Symbol Rth j-case 2/12 Description Thermal Resistance Junction-case Max Value Unit 2 °C/W TDA7264 - TDA7264A ELECTRICAL CHARACTERISTICS (Refer to the test circuit, VS + 20V; RL = 8Ω; Rs =50Ω; f = 1KHz; Tamb = 25°C, unless otherwise specified.) Symbol Parameter Test Condition VS Supply Range Iq Total Quiescent Current PO Music Output Power (*) THD = 10%; RL = 8Ω ; VS + 22.5V PO Output Power THD = 10% R L = 8Ω ; VS + 16V; RL = 4Ω Min. 80 20 THD = 1% R L = 8Ω ; VS + 16V; RL = 4Ω THD Total Harmonic Distortion Typ. +5 RL = 8Ω ; PO = 1W; f = 1KHz SR Slew Rate GV Closed Loop Voltage Gain ∆GV Voltage Gain Matching eN Ri SVR Tj Total Input Noise 25 25 W W 20 20 W W 0.02 % 0.03 70 60 30 V/µs 31 0.2 A Curve f = 20Hz to 22KHz 2.5 3.5 15 fr = 100Hz; Vripple = 0.5VRMS Thermal Shut-down Junction Temperature % dB dB 10 29 % % 1 f = 1KHz f = 10KHz Input Resistance Supply Voltage Rejection (each channel) mA W R L = 4Ω ; VS + 16V; PO = 0.1 to 12W; f = 100Hz to 15KHz Cross Talk V 130 0.5 R L = 4Ω ; PO = 1W; f = 1KHz Unit 32 R L = 8Ω ; PO = 0.1 to 15W; f = 100Hz to 15KHz CT Max. +22.5 dB dB 8 µV µV 20 KΩ 60 dB 145 °C MUTE FUNCTION [ref: +VS] VTMUTE AM Mute / Play Threshold -7 -6 Mute Attenuation 60 90 -5 V dB STAND-BY FUNCTION [ref: +V S] VTST-BY Stand-by / Mute Threshold AST-BY Stand-by Attenuation Iq ST-BY Quiescent Current @ Stand-by -3.5 -2.5 -1.5 V 110 dB 3 mA Note : (*) FULL POWER up to. VS = ±22.5V with RL = 8Ω and VS = ±16V with RL = 4Ω 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 R1 SW1 ST-BY C3 1µF MUTE/ ST-BY C1 1µF Q1 IN (L) C4 1000µF +VS 2 4 6 + 3 OUT (L) DZ R4 15K R5 4.7Ω C8 100nF R3 18K GND SW2 MUTE C2 1µF IN (R) 7 8 - 1 + 5 C7 100nF RL (L) OUT (R) -VS D94AU068B C5 100nF C6 1000µF R6 4.7Ω C9 100nF RL (R) 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 R2 C3 MUTE/ ST-BY Q1 R1 IN (L) SW1 ST-BY DZ 7 C5 3 5 C1 R4 C4 +VS + 4 OUT (L) - R7 RL (L) C8 R3 GND 9 IN (R) 11 SW2 MUTE C2 - 2 + 1 R10 6 -VS C7 OUT (R) RL (R) C9 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 compo- nents are those shown on the demo board schematic. Different values can be used: the following table can help the designer. COMPONENTS RECOMMENDED VALUE R1 10KΩ Mute Circuit Increase of Dz Biasing Current R2 15KΩ Mute Circuit Vpin # 4 Shifted Downward Vpin # 4 Shifted Upward R3 18KΩ Mute Circuit Vpin # 4 Shifted Upward Vpin # 4 Shifted Downward R4 15KΩ Mute Circuit Vpin # 4 Shifted Upward Vpin # 4 Shifted Downward R5, R6 4.7Ω Frequency Stability Danger of Oscillations C1, C2 1µF Input DC Decoupling C3 1µF St-By/Mute Time Constant C4, C6 1000µF Supply Voltage Bypass Danger of Oscillations C5, C7 0.1µF Supply Voltage Bypass Danger of Oscillations C8, C9 0.1µF Frequency Stability Dz 5.1V Mute Circuit Q1 BC107 Mute Circuit PURPOSE APPLICATIONS SUGGESTION for TDA7264A (Demo Board Schematic) The recommended values of the external compo- LARGER THAN RECOMMENDED VALUE SMALLER THAN RECOMMENDED VALUE Danger of Oscillations Higher Low Frequency Cutoff Larger On/Off Time Smaller On/Off Time nents are those shown are the demo board schematic different values can be used: the following table can help the designer. COMPONENTS RECOMMENDED VALUE R1 10KΩ Mute Circuit Increase of Dz Biasing 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 PURPOSE SMALLER THAN RECOMMENDED VALUE R4 15KΩ Mute Circuit Vpin # 5 Shifted Upward Vpin # 5 Shifted Downward R7, R10 4.7Ω Frequency Stability Danger of Oscillations Danger of Oscillations C1, C2 1µF Input DC Decoupling C3 1µF St-By/Mute Time Constant C4, C6 1000µF Supply Voltage Bypass Danger of Oscillations C5, C7 0.1µF Supply Voltage Bypass Danger of Oscillations C8, C9 0.1µF Frequency Stability Dz 5.1V Mute Circuit Q1 BC107 Mute Circuit MUTE, STAND-BY TRUTH TABLE 6/12 LARGER THAN RECOMMENDED VALUE SW1 SW2 A A STAND-BY A B STAND-BY B B MUTE B A PLAY Higher Low Frequency Cutoff Larger On/Off Time Smaller On/Off Time 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 8/12 Figure 12: Power Dissipation vs. Output Power 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 - 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. Figure 13 +VS (V) 20 t -VS -20 VIN (mV) Vpin4 (V) VS VS-2.5 VS-6 VS-10 Iq (mA) 0 VOUT (V) OFF PLAY STDBY PLAY OFF STDBY STDBY MUTE D94AU084 MUTE MUTE MUTE 9/12 TDA7264 - TDA7264A mm DIM. MIN. TYP. MIN. TYP. MAX. A 5 0.197 B 2.65 0.104 C 1.6 E 0.49 0.55 0.022 F 0.78 0.85 0.030 2.40 2.54 2.68 0.094 0.10 0.105 G1 17.64 17.78 17.92 0.69 0.70 0.71 H1 19.6 0.033 0.772 20.2 L 20.35 L2 17.05 L3 OUTLINE AND MECHANICAL DATA 0.063 0.019 G H2 10/12 inch MAX. 0.795 20.65 0.80 17.20 17.35 0.67 0.68 0.81 0.68 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 S 1.9 2.6 0.075 0.102 S1 1.9 2.6 0.075 0.102 U 0.40 0.55 0.015 0.022 Z 0.70 0.85 0.028 0.034 Dia1 3.65 3.85 0.144 0.152 Multiwatt8 (Pin. 5 Gnd) TDA7264 - TDA7264A mm DIM. MIN. TYP. inch MAX. MIN. TYP. MAX. A 5 0.197 B 2.65 0.104 C 1.6 D E 0.063 1 0.49 OUTLINE AND MECHANICAL DATA 0.039 0.55 0.019 0.022 F 0.88 0.95 0.035 G 1.45 1.7 1.95 0.057 0.067 0.077 0.037 G1 16.75 17 17.25 0.659 0.669 0.679 H1 19.6 0.772 H2 20.2 0.795 L 21.9 22.2 22.5 0.862 0.874 0.886 L1 21.7 22.1 22.5 0.854 0.87 0.886 L2 17.4 18.1 0.685 L3 17.25 17.5 17.75 0.679 0.689 0.713 0.699 L4 10.3 10.7 10.9 0.406 0.421 0.429 L7 2.65 2.9 0.104 M 4.25 4.55 4.85 0.167 0.179 0.191 M1 4.73 5.08 5.43 0.186 0.200 0.214 0.114 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 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 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