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TDA7383 数据表(PDF) 9 Page - STMicroelectronics |
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TDA7383 数据表(HTML) 9 Page - STMicroelectronics |
9 / 12 page t t t MUTE PIN VOLTAGE Vs OUTPUT WAVEFORM Vpin 25 WAVEFORM SHORT TO GND OR TO Vs D95AU304 CLIPPING THERMAL PROXIMITY ST-BY PIN VOLTAGE t Figure 14: Diagnostics Waveforms. CLIP DET. (TO GAIN COMPRESSOR/ TONE CONTROL) T1 25 D95AU305A + - VREF VREF1 T2 FAULT, THERMAL SHUTDOWN (TO POWER SUPPLY SECTION, µP VOLTAGE REGULATOR, FLASHING SYSTEM) + - VREF2 T1 << T2 VREF ≥ VREF1 >> VREF2 Figure 15. reached. As various kind of diagnostics information is avail- able at pin 25 (CLIPPING, SHORTS AND OVER- HEATING), it may be necessary to operate some distinctions on order to treat each event sepa- rately. This could be achieved by taking into ac- count the intrinsically different timing of the diag- nostics output under each circumstance. In fact, clipping will produce pulses normally much shorter than those present under faulty con- ditions. An example of circuit able to distinguish between the two occurrences is shown by fig. 15. STABILITY AND LAYOUT CONSIDERATIONS If properly layouted and hooked to standard car- radio speakers, the TDA7383 will be intrinsically stable with no need of external compensations TDA7383 9/12 |
类似零件编号 - TDA7383 |
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类似说明 - TDA7383 |
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