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參數(shù)資料
| 型號： | TPA3107D2PAPTG4 |
| 廠商： | TEXAS INSTRUMENTS INC |
| 元件分類： | 音頻／視頻放大 |
| 英文描述： | 15 W, 2 CHANNEL, AUDIO AMPLIFIER, PQFP64 |
| 封裝： | 10 X 10 MM, GREEN, PLASTIC, HTQFP-64 |
| 文件頁數(shù)： | 8/32頁 |
| 文件大?。?/td> | 1027K |
| 代理商： | TPA3107D2PAPTG4 |
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0.1 mF
0.47 mF
33
H
m
33 mH
OUTP
OUTN
L1
L2
C1
C2
C3
0.22 mF
1 mF
15
H
m
15 mH
OUTP
OUTN
L1
L2
C1
C2
C3
1nF
Ferrite
ChipBead
OUTP
OUTN
Ferrite
ChipBead
1nF
SLOS509B – OCTOBER 2006 – REVISED JULY 2007
APPLICATION INFORMATION (continued)
Most applications require a ferrite bead filter. The ferrite filter reduces EMI around 1 MHz and higher (FCC and
CE only test radiated emissions greater than 30 MHz). When selecting a ferrite bead, choose one with high
impedance at high frequencies, but low impedance at low frequencies.
Use an LC output filter if there are low frequency (<1 MHz) EMI-sensitive circuits and/or there are long wires
from the amplifier to the speaker.
When both an LC filter and a ferrite bead filter are used, the LC filter should be placed as close as possible to
the IC followed by the ferrite bead filter.
Figure 22. Typical LC Output Filter, Cutoff Frequency of 27 kHz, Speaker Impedance = 8
Figure 23. Typical LC Output Filter, Cutoff Frequency of 27 kHz, Speaker Impedance = 4
Figure 24. Typical Ferrite Chip Bead Filter (Chip Bead Example: Fair-Rite 2518121217Y3)
16
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