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參數(shù)資料
| 型號(hào)： | TS2007 |
| 廠商： | 意法半導(dǎo)體 |
| 英文描述： | 3W filter-free Class D audio power amplifer with 6-12dB fixed gain select |
| 中文描述： | 3W無濾波器D類音頻放大器6 - 12dB的固定增益選擇 |
| 文件頁數(shù)： | 25/29頁 |
| 文件大小： | 407K |
| 代理商： | TS2007 |
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TS2007
Application information
25/29
4.10
Output filter considerations
The TS2007 is designed to operate without an output filter. However, due to very sharp
transients on the TS2007 output, EMI radiated emissions may cause some standard
compliance issues.
These EMI standard compliance issues can appear if the distance between the TS2007
outputs and loudspeaker terminal are long (typically more than 50mm, or 100mm in both
directions, to the speaker terminals). As the PCB layout and internal equipment device are
different for each configuration, it is difficult to provide a one-size-fits-all solution.
However, to decrease the probability of EMI issues, there are several simple rules to follow:
Reduce, as much as possible, the distance between the TS2007 output pins and the
speaker terminals.
Use a ground plane for “shielding” sensitive wires.
Place, as close as possible to the TS2007 and in series with each output, a ferrite bead
with a rated current of minimum 2.5A and impedance greater than 50
Ω
at frequencies
above 30MHz. If, after testing, these ferrite beads are not necessary, replace them by a
short-circuit.
Allow extra footprint to place, if necessary, a capacitor to short perturbations to ground
(see
Figure 51
).
●
●
●
●
Figure 51.
Ferrite chip bead placement
In the case where the distance between the TS2007 output and the speaker terminals is too
long, it is possible to have low frequency EMI issues due to the fact that the typical operating
frequency is 280kHz. In this configuration, it is necessary to use the output filter represented
in
Figure 1 on page 4
as close as possible to the TS2007.
to speaker
about 100pF
gnd
Ferrite chip bead
From TS2007 output
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| TS2007_11 | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:3 W filter-free Class D audio power amplifer with 6-12 dB fixed gain select |
| TS2007EIJT | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:3 W filter-free class D audio power amplifier with 6 or 12 dB fixed gain select |
| TS2007EKIJT | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:3 W filter-free class D audio power amplifier with 6 or 12 dB fixed gain select |
| TS2007FC | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:3 W filter-free class D audio power amplifier with 6 or 12 dB fixed gain select |
| TS2007IQT | 功能描述:音頻放大器 3W filter free ClassD audio Pwr amp RoHS:否 制造商:STMicroelectronics 產(chǎn)品:General Purpose Audio Amplifiers 輸出類型:Digital 輸出功率: THD + 噪聲: 工作電源電壓:3.3 V 電源電流: 最大功率耗散: 最大工作溫度: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:TQFP-64 封裝:Reel |
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