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TPA3131D2 Datasheet(PDF) 19 Page - Texas Instruments |
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TPA3131D2 Datasheet(HTML) 19 Page - Texas Instruments |
19 / 35 page ![]() OUTP OUTN 10 µH L1 10 µH L2 C2 C3 0.68 µF 0.68 µF OUTP OUTN Ferrite Chip Bead 1 nF 1 nF Ferrite Chip Bead 4 - 8 W W 4 - 8 W W TPA3131D2, TPA3132D2 www.ti.com SLOS841B – SEPTEMBER 2013 – REVISED JANUARY 2015 Figure 27. Output Filter Configurations 7.3.15 AM Avoidance EMI Reduction To reduce interference in the AM radio band, the TPA313xD2 has the ability to change the switching frequency via AM<2:0> pins. The recommended frequencies are listed in Table 6. The fundamental frequency and its second harmonic straddle the AM radio band listed. This eliminates the tones that can be present due to the switching frequency being demodulated by the AM radio. Table 6. AM Frequencies US EUROPEAN AM FREQUENCY (kHz) AM FREQUENCY (kHz) SWITCHING FREQUENCY (kHz) AM2 AM1 AM0 522-540 540-917 540-914 500 0 0 1 0 1 0 917-1125 914-1122 600 (or 400) 0 0 0 1125-1375 1122-1373 500 0 0 1 0 1 0 1375-1547 1373-1548 600 (or 400) 0 0 0 0 1 0 1547-1700 1548-1701 600 (or 500) 0 0 1 Copyright © 2013–2015, Texas Instruments Incorporated Submit Documentation Feedback 19 Product Folder Links: TPA3131D2 TPA3132D2 |
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