TDA7492 View Datasheet(PDF) - STMicroelectronics
Part Name
Description
MFG CO.
'TDA7492' PDF : 32 Pages View PDF
Applications information
TDA7492
6.5
Output low-pass filter
To avoid EMI problems, it may be necessary to use a low-pass filter before the speaker. The
cutoff frequency should be larger than 22 kHz and much lower than the output switching
frequency. It is necessary to choose the L-C component values depending on the loud
speaker impedance. Some typical values, which give a cutoff frequency of 27 kHz, are
shown in Figure 33 and Figure 34 below.
Figure 33. Typical LC filter for a 8- speaker
Figure 34. Typical LC filter for a 4- speaker
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DocID014926 Rev 6
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