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| TDA7263M 12 +12W STEREO AMPLIFIER WITH MUTING WIDE SUPPLY VOLTAGE RANGE HIGH OUTPUT POWER 12+12W @ VS=28V, RL = 8, THD=10% MUTE FACILITY (POP FREE) WITH LOW CONSUMPTION AC SHORT CIRCUIT PROTECTION THERMAL OVERLOAD PROTECTION DESCRIPTION The TDA7263M is class AB dual audio power amplifier assembled in the Multiwatt package, specially designed for high quality sound application as HI-FI music centers and stereo TV sets. Multiwatt11 ORDERING NUMBER:TDA7263M APPLICATION CIRCUIT March 1995 1/7 TDA7263M ABSOLUTE MAXIMUM RATINGS Symbol VS IO IO Ptot Top Tstg,Tj Supply Voltage Output Peak Current (repetitive f >20Hz) Output Peak Current (non repetitive, t = 100s) Total Power Dissipation (Tcase = 70C) Operating Temperature Range Storage & Junction Temperature Parameter Value 35 2.5 3.5 30 0 to 70 -40 to 150 Unit V A A W C C PIN CONNECTION (Top view) Figure 1: Block Diagram 2/7 TDA7263M THERMAL DATA Symbol Rth j-case Parameter Thermal resistance junction to case Max Value 2.5 Unit C/W ELECTRICAL CHARACTERISTICS (Refer to the stereo test and application circuit, VS = 28V; RL = 8; Gv = 30dB; f = 1KHz; T amb = 25C unless otherwise specified.) Symbol VS VO Iq PO d CT RI fL fH eN SVR Tj Parameter Supply Voltage Quiescent Output Voltage Total Quiescent Current Output Power (RMS) Total Harmonic Distortion Cross Talk Input Resistance Low Frequency Roll-off (-3dB) High Frequency Roll-off (-3dB) Total Input Noise Voltage Supply Voltage Rejection (each channel) Thermal Shutdown Junction Temperature Mute Threshold Play Threshold Mute Attenuation Quiescent Current @ Mute 70 1 A Curve; RS = 10K f = 22Hz to 22KHz; RS = 10K RS = 10K; f = 100Hz; Vr = 0.5V 45 d = 10% d = 1% Tamb = 85C 10 Test Condition Min. 10 13.5 70 12 9.5 0.02 70 60 100 200 40 80 1.5 3 60 145 10 0.2 0.5 95 Typ. Max. 32 Unit V V mA W W % dB dB K Hz KHz mV V dB C PO = 1W, f = 1kHz f = 100Hz to 10KHz; PO = 0.1 to 8W R S = 10K; f = 1KHz R S = 10K; f = 10KHz MUTE FUNCTION VTMUTE VTPLAY ATT AM IqMUTE 1.6 4.5 100 7 10 V V dB mA TYPICAL CHARACTERISTICS (referred to the typical Application Circuit, VS = 28V, RL = 8, unless otherwise specified) Figure 1: Output Power vs. Supply Voltage Figure 2: Distortion vs. Output Power 3/7 TDA7263M Figure 3: Quiescent Current vs. Supply Voltage Figure 4: Supply Voltage Rejection vs. Frequency Figure 5: Crosstalk vs. Frequency Figure 6: Output Attenuation & Quiescent Current vs. Vpin3 Figure 7: Total Power Dissipation vs. Output Power 4/7 TDA7263M APPLICATION SUGGESTION The recommended values of the components are those shown on application circuit of figure 1. Different values can be used; the following table can help the designer. Component R1 R2 R5 C1 C3 and R3 and R4 and R6 and C2 Recomm. Value 1.5K 47 4.7 100nF 47F 100nF 1000F 47F 0.1F 1000F Purpose Close loop gain setting (*) Close loop gain setting (*) Frequency stability Input DC decoupling - Ripple Rejection - Mute time constant Supply Voltage Bypass Supply Voltage Bypass Feedback input DC decoupling Frequency stability Output DC decoupling Larger Than Increase of gain Decrease of gain Danger of oscillations Higher SVR Increase of the Switch-on time Smaller Than Decrease of gain Increase of gain Higher low frequency cutoff - Degradation of SVR - Worse turn-off pop by muting Danger of oscillations Decrease of the Switch-on time Danger of oscillations Higher low-frequency cut-off C4 C5 C6 and C7 C8 and C9 C10 and C11 Increase of the Switch-on time (*) Closed loop gain must be higher than 26dB Figure 8: P. C. Board and Component Layout of the Application Circuit (1:1 scale). BUILT-IN PROTECTION SYSTEMS THERMAL SHUT-DOWN The presence of a thermal limiting circuit offers the following advantages: 1-an overload on the output (even if it is permanent), or an excessive ambient temperature can be easily withstood. 2-the heatsink can have a smaller factor of safety compared with that of a conventional circuit. There is no device damage in the case of excessive junction temperature; all that happens is that PO (and therefore Ptot) and I O are reduced. SHORT CIRCUIT (AC CONDITIONS) The TDA7263M can withstand accidental short circuits across the speaker made by a wrong connection during normal play operation. 5/7 TDA7263M MULTIWATT11 PACKAGE MECHANICAL DATA DIM. MIN. A B C D E F G G1 H1 H2 L L1 L2 L3 L4 L7 M M1 S S1 Dia1 21.5 21.4 17.4 17.25 10.3 2.65 4.1 4.88 1.9 1.9 3.65 4.3 5.08 17.5 10.7 0.49 0.88 1.57 16.87 19.6 20.2 22.3 22.2 18.1 17.75 10.9 2.9 4.5 5.3 2.6 2.6 3.85 0.846 0.843 0.685 0.679 0.406 0.104 0.161 0.192 0.075 0.075 0.144 0.169 0.200 0.689 0.421 1.7 17 1 0.55 0.95 1.83 17.13 0.019 0.035 0.062 0.664 0.772 0.795 0.878 0.874 0.713 0.699 0.429 0.114 0.177 0.209 0.102 0.102 0.152 0.067 0.669 mm TYP. MAX. 5 2.65 1.6 0.039 0.022 0.037 0.072 0.674 MIN. inch TYP. MAX. 0.197 0.104 0.063 6/7 TDA7263M Information furnished is believed to be accurate and reliable. However, SGS-THOMSON Microelectronics 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 SGS-THOMSON Microelectronics. Specifications mentioned in this publication are subject to change without notice. This publication supersedes and replaces all information previously supplied. SGS-THOMSON Microelectronics products are not authorized for use as critical components in life support devices or systems without express written approval of SGS-THOMSON Microelectronics. (c) 1995 SGS-THOMSON Microelectronics - All Rights Reserved MULTIWATT (R) is a Registered Trademark of SGS-THOMSON Microelectronics SGS-THOMSON Microelectronics GROUP OF COMPANIES Australia - Brazil - France - Germany - Hong Kong - Italy - Japan - Korea - Malaysia - Malta - Morocco - The Netherlands - Singapore Spain - Sweden - Switzerland - Taiwan - Thaliand - United Kingdom - U.S.A. 7/7 |
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