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TPA3221 Datasheet(PDF) 12 Page - Texas Instruments

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Part # TPA3221
Description  100-W Stereo, 200-W Mono HD-Audio, Analog-Input, Class-D Amplifier
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Manufacturer  TI1 [Texas Instruments]
Direct Link  http://www.ti.com
Logo TI1 - Texas Instruments

TPA3221 Datasheet(HTML) 12 Page - Texas Instruments

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TPA3221
SLASEE9 – JUNE 2017
www.ti.com
Product Folder Links: TPA3221
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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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