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TDA8922C Datasheet(PDF) 21 Page - NXP Semiconductors

Part No. TDA8922C
Description  2 X 75 W class-D power amplifier
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Maker  NXP [NXP Semiconductors]
Homepage  http://www.nxp.com
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TDA8922C Datasheet(HTML) 21 Page - NXP Semiconductors

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TDA8922C_1
© NXP B.V. 2009. All rights reserved.
Product data sheet
Rev. 01 — 7 September 2009
21 of 40
NXP Semiconductors
TDA8922C
2
× 75 W class-D power amplifier
The most effective way to avoid pumping effects is to connect the TDA8922C in a mono
full-bridge configuration. In the case of stereo single-ended applications, it is advised to
connect the inputs in anti-phase (see Section 8.4 on page 11). The power supply can also
be adapted; for example, by increasing the values of the supply line decoupling
capacitors.
13.7 Application schematic
Notes on the application schematic:
Connect a solid ground plane around the switching amplifier to avoid emissions
Place 100 nF capacitors as close as possible to the TDA8922C power supply pins
Connect the heatsink to the ground plane or to VSSPn using a 100 nF capacitor
Use a thermally conductive, electrically non-conductive, Sil-Pad between the
TDA8922C heat spreader and the external heatsink
The heat spreader of the TDA8922C is internally connected to VSSD
Use differential inputs for the most effective system level audio performance with
unbalanced signal sources. In case of hum due to floating inputs, connect the
shielding or source ground to the amplifier ground.


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