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| 型号： | TPA3106D1VFP |
| 厂商： | TEXAS INSTRUMENTS INC |
| 元件分类： | 音频／视频放大 |
| 英文描述： | 40 W, 1 CHANNEL, AUDIO AMPLIFIER, PQFP32 |
| 封装： | 7 X 7 MM, GREEN, PLASTIC, HLQFP-32 |
| 文件页数： | 9/35页 |
| 文件大小： | 1250K |
| 代理商： | TPA3106D1VFP |
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When to Use an Output Filter for EMI Suppression
1 mF
33
H
m
33 mH
OUTP
OUTN
L1
L2
C2
C3
2.2 mF
15
H
m
15 mH
OUTP
OUTN
L1
L2
C2
C3
1nF
Ferrite
ChipBead
OUTP
OUTN
Ferrite
ChipBead
1nF
SLOS516B – OCTOBER 2007 – REVISED MARCH 2007
Design the TPA3106D1 without the filter if the traces from amplifier to speaker are short (< 10 cm). Powered
speakers, where the speaker is in the same enclosure as the amplifier, is a typical application for class-D without
a filter.
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 28. Typical LC Output Filter, Cutoff Frequency of 27 kHz, Speaker Impedance = 8
Figure 29. Typical LC Output Filter, Cutoff Frequency of 27 kHz, Speaker Impedance = 4
Figure 30. Typical Ferrite Chip Bead Filter (Chip Bead Example: Fair-Rite 2512067007Y3)
Copyright 2007, Texas Instruments Incorporated
17
Product Folder Link(s): TPA3106D1
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相关代理商/技术参数 |
参数描述 |
|---|---|
| TPA3106D1VFPG4 | 功能描述:音频放大器 40W Mono Class-D Audio Power Amp RoHS:否 制造商:STMicroelectronics 产品:General Purpose Audio Amplifiers 输出类型:Digital 输出功率: THD + 噪声: 工作电源电压:3.3 V 电源电流: 最大功率耗散: 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:TQFP-64 封装:Reel |
| TPA3106D1VFPR | 功能描述:音频放大器 40W Mono Class-D Audio Pwr Amp RoHS:否 制造商:STMicroelectronics 产品:General Purpose Audio Amplifiers 输出类型:Digital 输出功率: THD + 噪声: 工作电源电压:3.3 V 电源电流: 最大功率耗散: 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:TQFP-64 封装:Reel |
| TPA3106D1VFPR | 制造商:Texas Instruments 功能描述:Audio Power Amplifiers |
| TPA3106D1VFPRG4 | 功能描述:音频放大器 40W Mono Class-D Audio Power Amp RoHS:否 制造商:STMicroelectronics 产品:General Purpose Audio Amplifiers 输出类型:Digital 输出功率: THD + 噪声: 工作电源电压:3.3 V 电源电流: 最大功率耗散: 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:TQFP-64 封装:Reel |
| TPA3107D2 | 制造商:TI 制造商全称:Texas Instruments 功能描述:15-W STEREO CLASS-D AUDIO POWER AMPLIFIER |
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