TDA7375 general description:
Circuit of quadruple audio amplifier using integrated circuit TDA7235 for systems surround. Circuit of quadruple amplifier for systems surround using the ci tda7375, for potency of 7 watts for channel in the version amplifying quad or 15 watts in the dual version (stereo). could arrive to 35 watts in the version.TDA7235 is a circuit integrated amplifier quadruple audio amplifier class AB capable to work in double bridge or simple quadruple amplifiers, circuit integrated with protection system of short, it requests the minimum of external components, available in multiwat 15H (TDA7375H) and multiwat 15V (TDA7375V). Although the first conception went to automotives pplications , to give him/it in a great variety of applications of low potency. That integrated circuit is ideal in the situation in that is wanted a reasonable potency and with a Power tension relatively low for your operation. That circuit drawn below it uses the basic configuration of quadruple amplifier, but using a configuration in bridge, it can be obtained about 4 times the maximum potency. In that configuration of quadruple amplifier it can be used as amplifier end of systems surround, when 7 watts for channel are already a good potency, using the minimum of components.Operation of the circuit of the audio amplifier with tda7375 The capacitor C8 uncouples the internal tension divisor. The capacitors C5 and C6 are the filter for Power supply. The capacitors of 2200µF / 25V are the exit capacitors. Vs is the Power supply that can be a car battery or a supply of 14 volts. Power supply for the circuit It can be with a transformer 12V/30VA, a rectifier bridge and a capacitor electrolytic of 4700µF or (larger). The maximum consumption of current with loads of 4Ohms is 2.1 A. You can use loads of 2 ohms, but he/she also remembers to increase the size of the of heat-sink, because the circuit integrated in Multiwat package it will heat up a little more. Suggestion of printed circuit board side of the copperSuggested PCB for mounting the amplifier tda7375, component side Information about mounting circuit audio amplifier. When assembling the circuit remember that this quad amplifier channels features two four inverted, then it should connect the speakers in reverse polarity at such times, attention to the polarity of electrolytic capacitors that should be of good quality. Before welding the tda7375 remember to solder the jumper, which will be underneath the integrated. TDA7375 Audio Amplifier 2x35W
TDA7375 features:
- HIGH OUTPUT POWER CAPABILITY:
– 2 x 35W/4 EIAJ
– 2 x 35W/4 EIAJ
– 2 x 25W/4 @14.4V, 1KHz, 10%
– 4 x 7W/4 @14.4V,1KHz, 10%
– 4 x 12W/2 @14.4V, 1KHz, 10%
- MINIMUM EXTERNAL COMPONENTS
– NO BOOTSTRAP CAPACITORS
– NO BOUCHEROT CELLS
– INTERNALLY FIXED GAIN (26dB BTL)
- ST-BY FUNCTION (CMOS COMPATIBLE)
- NO AUDIBLE POP DURING ST-BY OPERATIONS
- DIAGNOSTICS FACILITY FOR:
– OUT TO GND SHORT
– OUT TO VS SHORT
– SOFT SHORT AT TURN-ON
– THERMAL SHUTDOWN PROXIMITY
TDA7375 circuit diagram:
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| Double Bridge TDA7375 |
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| Quad SterioTDA7375 |
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| SterioBridge TDA7375 |
TDA7375 layout:
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| pcb layout |
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| pcb layout |
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