User guide

PAM8403H
Document number: DSxxxxx Rev. 1 - 0
9 of 11
www.diodes.com
November 2012
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PAM8403H
A Product Line o
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Diodes Incorporated
Application Information (cont.)
How to Reduce EMI (Electro Magnetic Interference)
A simple solution is to put an additional capacitor 1000µF at power supply terminal for power line coupling if the traces from amplifier to speakers
are short (<20cm).
Most applications require a ferrite bead filter as shown in Figure 2. The ferrite filter reduces EMI of around 1MHz and higher. When selecting a
ferrite bead, choose one with high impedance at high frequencies, and low impedance at low frequencies.
Figure 2. Ferrite Bead Filter to Reduce EMI
Ordering Information
Part Number Part Marking Package Type Standard Package
PAM8403DR-H
PAM8403
XXXYWWLL
SOP-16 2500 Units/Tape&Reel