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TDA8950_1 © NXP B.V. 2008. All rights reserved.
Preliminary data sheet Rev. 01 — 9 September 2008 23 of 39
NXP Semiconductors
TDA8950
2 × 150 W class-D power amplifier
13.10 Layout and grounding
To obtain a high-level system performance, certain grounding techniques are essential.
The input reference grounds have to be tied with their respective source grounds and
must have separate tracks from the power ground tracks. This will prevent the large
(output) signal currents from interfering with the small AC input signals. The small-signal
ground tracks should be physically located as far as possible from the power ground
tracks. Supply and output tracks should be as wide as possible for delivering maximum
output power.
Fig 11. Printed-circuit board layout (quasi-single-sided); components view
R19 FBGNDR20, R21 ground
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