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TDA7296S Folha de dados(PDF) 7 Page - STMicroelectronics |
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TDA7296S Folha de dados(HTML) 7 Page - STMicroelectronics |
7 / 11 page above, the device features a thermal shutdown circuit which initially puts the device into a muting state (@ Tj = 150 oC) and then into stand-by (@ Tj = 160 oC). Full protection against electrostatic discharges on every pin is included. 3) Other Features The device is provided with both stand-by and mute functions, independently driven by two CMOS logic compatible input pins. The circuits dedicated to the switching on and off of the amplifier have been carefully optimized to avoid any kind of uncontrolled audible transient at the output. The sequence that we recommend during the ON/OFF transients is shown by Figure 4. The application of figure 5 shows the possibility of using only one command for both st-by and mute functions. On both the pins, the maximum appli- cable range corresponds to the operating supply voltage. APPLICATION INFORMATION BRIDGE APPLICATION Another application suggestion is the BRIDGE configuration, where two TDA7296S are used. 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. The main advantages offered by this solution are: - High power performances with limited supply voltage level. - Considerably high output power even with high load values (i.e. 16 Ohm). With Rl= 8 Ohm, Vs = ±23V the maximum output power obtainable is 120W (Music Power) 1N4148 10K 30K 20K 10 µF 10 µF MUTE STBY D93AU014 MUTE/ ST-BY Figure 5: Single Signal ST-BY/MUTE Control Circuit PLAY OFF ST-BY MUTE MUTE ST-BY OFF D98AU817 5V 5V +Vs (V) +40 -40 VMUTE PIN #10 (V) VST-BY PIN #9 (V) -Vs VIN (mV) IQ (mA) VOUT (V) Figure 4: Turn ON/OFF Suggested Sequence TDA7296S 7/11 |
Nº de peça semelhante - TDA7296S |
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Descrição semelhante - TDA7296S |
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