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TPA3221 Datasheet(PDF) 12 Page - Texas Instruments |
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TPA3221 Datasheet(HTML) 12 Page - Texas Instruments |
12 / 39 page ![]() 12 TPA3221 SLASEE9 – JUNE 2017 www.ti.com Product Folder Links: TPA3221 Submit Documentation Feedback Copyright © 2017, Texas Instruments Incorporated Overview (continued) If using external power supply for the AVDD and VDD internal regulators, this supply should be from a low-noise, low-output-impedance voltage regulator. Likewise, the 30 V power stage supply is assumed to have low output impedance throughout the entire audio band, and low noise. The power supply sequence is not critical as facilitated by the internal power-on-reset circuit, but it is recommended to release RESET after the power supply is settled for minimum turn on audible artefacts. Moreover, the TPA3221 is fully protected against erroneous power-stage turn on due to parasitic gate charging. Thus, voltage-supply ramp rates (dV/dt) are noncritical within the specified range (see the Recommended Operating Conditions table of this data sheet). |
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