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TAS5715PHPR Datasheet(PDF) 33 Page - Texas Instruments |
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TAS5715PHPR Datasheet(HTML) 33 Page - Texas Instruments |
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33 / 74 page  HPR A_sel_HP_SDZ 15k HPL Left Right B0424-01 I S Audio 2 TAS5715 Addr=0x54 RC Filter (HP Amplifier) TAS5715 www.ti.com SLOS645 – AUGUST 2010 Bit 0: This is bit should be 1 if the headphone function is used in the TAS5715. If the headphone is not used, this bit can be cleared to 0. Then if bit 1 is also set to 1, the TAS5715 drives the FAULTZ signal out on the A_SEL pin. FAULTZ is the internal power-stage fault signal asserted low during errors like overcurrent, overtemperature, and UVP. Figure 46 shows the connection of A_SEL_HP_SDZ pin to headphone shutdown. Figure 46. Headphone Shutdown (HP_SD) Digital THD Manager The THD manager can be used to achieve digitally the {specified ?} THD levels without voltage clipping. This allows the customer to achieve the same THD (for example, 10% THD) for different power levels (15 W/10 W/5 W) with same PVCC level. The waveform of Figure 47 shows digital clipping using the THD manager. Figure 47. Digital Clipping Using the THD Manager Register 0x57 is used to achieve the clipping. Register 0x56 is used to scale the clipped waveform to get the desired power out. Copyright © 2010, Texas Instruments Incorporated Submit Documentation Feedback 33 Product Folder Link(s): TAS5715 |
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