TDA7294 SGS-Thomson-Microelectronics, TDA7294 Datasheet
TDA7294
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TDA7294 Summary of contents
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... VERY LOW DISTORTION VERY LOW NOISE SHORT CIRCUIT PROTECTION THERMAL SHUTDOWN DESCRIPTION The TDA7294 is a monolithic integrated circuit in Multiwatt15 package, intended for use as audio class AB amplifier in Hi-Fi field applications (Home Stereo, self powered loudspeakers, Top- class TV). Thanks to the wide voltage range and ...
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... TDA7294 PIN CONNECTION (Top view) TAB connected BLOCK DIAGRAM ABSOLUTE MAXIMUM RATINGS Symbol V Supply Voltage (No Signal Output Peak Current O P Power Dissipation tot case T Operating Ambient Temperature Range Storage and Junction Temperature stg j 2/16 Parameter Value Unit ...
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... 27V 5W 1kHz 0.1 to 50W 20Hz to 20kHz curve f = 20Hz to 20kHz 100 f = 100Hz 0.5Vrms 60 ripple 3.5 70 3.5 60 TDA7294 Value Unit Max 1.5 C/W = 30dB; V Typ. Max. Unit 500 nA +10 mV +100 100 ...
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... TDA7294 Figure 2: P.C.B. and components layout of the circuit of figure 1. (1:1 scale) Note: The Stand-by and Mute functions can be referred either to GND or -VS. On the P.C.B. is possible to set both the configuration through the jumper J1. 4/16 ...
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... MUTE TIME LARGER MUTE CONSTANT ON/OFF TIME ST-BY TIME LARGER ST-BY CONSTANT ON/OFF TIME BOOTSTRAPPING SUPPLY VOLTAGE BYPASS SUPPLY VOLTAGE BYPASS TDA7294 SMALLER THAN SUGGESTED DECREASE INPUT IMPEDANCE SMALLER ST-BY ON/OFF TIME; POP NOISE SMALLER MUTE ON/OFF TIME HIGHER LOW FREQUENCY CUTOFF HIGHER LOW ...
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... TDA7294 TYPICAL CHARACTERISTICS (Application Circuit of fig 1 unless otherwise specified) Figure 3: Output Power vs. Supply Voltage. Figure 5: Output Power vs. Supply Voltage Figure 7: Distortion vs. Frequency 6/16 Figure 4: Distortion vs. Output Power Figure 6: Distortion vs. Output Power Figure 8: Distortion vs. Frequency ...
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... TYPICAL CHARACTERISTICS (continued) Figure 9: Quiescent Current vs. Supply Voltage Figure 11: Mute Attenuation vs. V pin10 Figure 13: Power Dissipation vs. Output Power Figure 10: SupplyVoltage Rejection vs. Frequency Figure 12: St-by Attenuation vs. V pin9 Figure 14: Power Dissipation vs. Output Power TDA7294 7/16 ...
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... The solution shown as a principle shematic by Fig 15 represents the DMOS unity-gain output buffer of the TDA7294. This large-signal, high-power buffer must be ca- pable of handling extremely high current and volt- age levels while maintaining acceptably low har- Figure 15: Principle Schematic of a DMOS unity-gain buffer ...
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... The sequence that we recommend during the ON/OFF transients is shown by Figure 16. The application of figure 17 shows the possibility using only one command for both st-by and mute functions. On both the pins, the maximum D93AU014 applicable range corresponds to the operating supply voltage. TDA7294 OFF D93AU013 9/16 ...
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... Here below (figure 18) is described a circuit pro- posal for a high efficiency amplifier which can be adopted for both HI-FI and CAR-RADIO applica- tions. The TDA7294 is a monolithic MOS power ampli- fier which can be operated at 80V supply voltage (100V with no signal applied) while delivering out- put currents ...
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... Figure 19: P.C.B. and Components Layout of the Circuit of figure 18 (1:1 scale) diodes Z1,Z2 and resistors R7,R8 define the mini- mum drop across the power MOS transistors of the TDA7294. L1, L2, L3 and the snubbers C9, R1 and C10, R2 stabilize the loops formed by the ”bootstrap” circuits and the output stage of the TDA7294 ...
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... TDA7294 Figure 20: Power Dissipation vs. Output Power HIGH-EFFICIENCY Figure 22: Distortion vs. Output Power Figure 24: Power Dissipation vs. Output Power 12/16 Figure 21: Distortion vs. Output Power Figure 23: Power Dissipation vs. Output Power ...
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... BRIDGE APPLICATION Another application suggestion is the BRIDGE configuration, where two TDA7294 are used, as shown by the schematic diagram of figure 25. In this application, the value of the load must not be lower than 8 Ohm for dissipation and current capability reasons. A suitable field of application includes HI-FI/TV subwoofers realizations. ...
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... TDA7294 Figure 26: Frequency Response of the Bridge Application Figure 28: Distortion vs. Output Power 14/16 Figure 27: Distortion vs. Output Power ...
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... TDA7294 inch TYP. MAX. 0.197 0.104 0.063 0.039 0.022 0.030 0.050 0.055 0.700 0.705 0.795 0.890 0.886 0.713 0.689 0.699 0.421 0.429 0.114 0.169 0.181 0.200 0.209 0.102 ...
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... TDA7294 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 men- tioned in this publication are subject to change without notice ...