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參數資料
| 型號： | TPA2011D1YFFR |
| 廠商： | TEXAS INSTRUMENTS INC |
| 元件分類： | 音頻／視頻放大 |
| 英文描述： | 3.24 W, 1 CHANNEL, AUDIO AMPLIFIER, BGA9 |
| 封裝： | 1.21 X 1.16 MM, 0.40 MM PITCH, GREEN, PLASTIC, DSBGA-9 |
| 文件頁數： | 8/24頁 |
| 文件大小： | 670K |
| 代理商： | TPA2011D1YFFR |
_
+
IN-
IN+
PWM
H-
Bridge
VO+
VO-
Internal
Oscillator
CS
To Battery
VDD
GND
Bias
Circuitry
RI2
RP
Filter-Free Class D
SHUTDOWN
RI1
Single-Ended
Input 2
CI2
CP
Single-Ended
Input 1
CI1
1 nF
Ferrite
Chip Bead
VO
VO+
Ferrite
Chip Bead
1 nF
SLOS626A – DECEMBER 2009 – REVISED MAY 2010
www.ti.com
Figure 33. Application Schematic With TPA2011D1 Summing Two Single-Ended Inputs
WHEN TO USE AN OUTPUT FILTER
Design the TPA2011D1 without an Inductor / Capacitor (LC) output filter if the traces from the amplifier to the
speaker are short. Wireless handsets and PDAs are great applications for this class-D amplifier to be used
without an output filter.
The TPA2011D1 does not require an LC output filter for short speaker connections (approximately 100 mm long
or less). A ferrite bead can often be used in the design if failing radiated emissions testing without an LC filter;
and, the frequency-sensitive circuit is greater than 1 MHz. If choosing a ferrite bead, choose one with high
impedance at high frequencies, but very low impedance at low frequencies. The selection must also take into
account the currents flowing through the ferrite bead. Ferrites can begin to loose effectiveness at much lower
than rated current values. See the TPA2011D1 EVM User's Guide for components used successfully by TI.
Figure 34 shows a typical ferrite-bead output filter.
Figure 34. Typical Ferrite Chip Bead Filter
16
Copyright 2009–2010, Texas Instruments Incorporated
Product Folder Link(s) :TPA2011D1
相關PDF資料 |
PDF描述 |
|---|---|
| TPA2011D1YFFT | 3.24 W, 1 CHANNEL, AUDIO AMPLIFIER, BGA9 |
| TPA2012D2RTJ | 2.1 W, 2 CHANNEL, AUDIO AMPLIFIER, PQCC20 |
| TPA2012D2YZH | 2.1 W, 2 CHANNEL, AUDIO AMPLIFIER, BGA16 |
| TPA2012D2RTJRG4 | 2.1 W, 2 CHANNEL, AUDIO AMPLIFIER, PQCC20 |
| TPA2012D2RTJR | 2.1 W, 2 CHANNEL, AUDIO AMPLIFIER, PQCC20 |
相關代理商/技術參數 |
參數描述 |
|---|---|
| TPA2011D1YFFT | 功能描述:音頻放大器 3.2W mono class-D RoHS:否 制造商:STMicroelectronics 產品: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: 安裝風格:SMD/SMT 封裝 / 箱體:TQFP-64 封裝:Reel |
| TPA2012D2 | 制造商:TI 制造商全稱:Texas Instruments 功能描述:2.1 W/CH STEREO FILTER-FREE CLASS-D AUDIO POWER AMPLIFIER |
| TPA2012D2_07 | 制造商:TI 制造商全稱:Texas Instruments 功能描述:2.1 W/CH STEREO FILTER-FREE CLASS-D AUDIO POWER AMPLIFIER |
| TPA2012D2EVM | 功能描述:音頻 IC 開發工具 TPA2012D2 Eval Mod RoHS:否 制造商:Texas Instruments 產品:Evaluation Kits 類型:Audio Amplifiers 工具用于評估:TAS5614L 工作電源電壓:12 V to 38 V |
| TPA2012D2PWP | 制造商:Texas Instruments 功能描述: |
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