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TPA032D01 Datasheet(PDF) 17 Page - Texas Instruments |
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TPA032D01 Datasheet(HTML) 17 Page - Texas Instruments |
17 / 25 page TPA032D01 10W MONO CLASSD AUDIO POWER AMPLIFIER SLOS282B − DECEMBER 1999 − REVISED JUNE 2000 17 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 APPLICATION INFORMATION class-D effect on power supply (continued) There is a minor power supply savings with a class-D amplifier versus a linear amplifier when amplifying sine waves. The difference is much larger when the amplifier is used strictly for music. This is because music has much lower RMS output power levels, given the same peak output power (see Figure 10); and although linear devices are relatively efficient at high RMS output levels, they are very inefficient at mid-to-low RMS power levels. The standard method of comparing the peak power to RMS power for a given signal is crest factor, whose equation is shown below. The lower RMS power for a set peak power results in a higher crest factor Crest Factor + 10 log P PK Prms Time PPK PRMS Figure 10. Audio Signal Showing Peak and RMS Power |
Número de pieza similar - TPA032D01_07 |
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Descripción similar - TPA032D01_07 |
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