TDA8950
NXP Semiconductors
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.
R20, R21 ground
R19 FBGND
001aai421
Fig 11. Printed-circuit board layout (quasi-single-sided); components view
TDA8950_1
© NXP B.V. 2008. All rights reserved.
Preliminary data sheet
Rev. 01 — 9 September 2008
23 of 39
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