PAM8301AAF View Datasheet(PDF) - Power Analog Micoelectronics
Part Name
Description
MFG CO.
'PAM8301AAF' PDF : 11 Pages View PDF
PAM8301
Filterless Class-D Mono Audio Amplifier
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 at Figure 1. The ferrite filter depresses 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.
OUT+
Ferrite Bead
OUT-
Ferrite Bead
220pF
220pF
Figure 1: Ferrite Bead Filter to Reduce EMI
Power Analog Microelectronics,Inc
www.poweranalog.com
9
09/2008 Rev 1.2
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