TDA8920C Datasheet, PDF (24/40 Pages) NXP Semiconductors – 2 X110 W class-D power amplifier

NXP Semiconductors
TDA8920C
2 × 110 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 to their respective source grounds and must
have separate tracks from the power ground tracks. This prevents 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 to deliver maximum output power.
R20, R21 ground
R19 FBGND
Fig 11. Printed-circuit board layout (quasi-single-sided); component view
001aai421
TDA8920C_1
Preliminary data sheet
Rev. 01 — 29 September 2008
© NXP B.V. 2008. All rights reserved.
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