參數(shù)資料
型號(hào)： TPA2010D1YZFT
廠商： TEXAS INSTRUMENTS INC
元件分類(lèi)： 音頻／視頻放大
英文描述： 2.5 W, 2 CHANNEL, AUDIO AMPLIFIER, PBGA9
封裝： 1.45 X 1.45 MM, GREEN, DSBGA-9
文件頁(yè)數(shù)： 11/25頁(yè)
文件大?。?/td> 783K
代理商： TPA2010D1YZFT
www.ti.com
P
SPKR +
P
SUP
–P
SUP THEORETICAL
(at max output power)
(19)
P
SPKR +
P
SUP
P
OUT
–
P
SUP THEORETICAL
P
OUT
(at max output power)
(20)
P
SPKR +
P
OUT
1
hMEASURED *
1
hTHEORETICAL
(at max output power)
(21)
hTHEORETICAL
+
R
L
R
L )
2r
DS(on)
(at max output power)
(22)
When to Use an Output Filter
1 nF
Ferrite
Chip Bead
OUTP
OUTN
Ferrite
Chip Bead
1 nF
1
F
1
F
33
H
33
H
OUTP
OUTN
SLOS417C – OCTOBER 2003 – REVISED SEPTEMBER 2007
The maximum efficiency of the TPA2010D1 with a 3.6 V supply and an 8-
load is 86% from Equation 22. Using
equation Equation 21 with the efficiency at maximum power (84%), we see that there is an additional 17 mW
dissipated in the speaker. The added power dissipated in the speaker is not an issue as long as it is taken into
account when choosing the speaker.
Design the TPA2010D1 without an output filter if the traces from amplifier to speaker are short. The TPA2010D1
passed FCC and CE radiated emissions with no shielding with speaker trace wires 100 mm long or less.
Wireless handsets and PDAs are great applications for class-D without a filter.
A ferrite bead filter can often be used if the design is failing radiated emissions without an LC filter, and the
frequency sensitive circuit is greater than 1 MHz. This is good for circuits that just have to pass FCC and CE
because FCC and CE only test radiated emissions greater than 30 MHz. If choosing a ferrite bead, choose one
with high impedance at high frequencies, but very 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 leads
from amplifier to speaker.
Figure 37 and Figure 38 show typical ferrite bead and LC output filters.
Figure 37. Typical Ferrite Chip Bead Filter (Chip bead example: NEC/Tokin: N2012ZPS121)
Figure 38. Typical LC Output Filter, Cutoff Frequency of 27 kHz
Copyright 2003–2007, Texas Instruments Incorporated
19
Product Folder Link(s): TPA2010D1
相關(guān)PDF資料
PDF描述
TPA2010D1YEF 2.5 W, 1 CHANNEL, AUDIO AMPLIFIER, BGA9
TPA2010D1YZF 2.5 W, 1 CHANNEL, AUDIO AMPLIFIER, BGA9
TPA2011D1YFFR 3.24 W, 1 CHANNEL, AUDIO AMPLIFIER, BGA9
TPA2011D1YFFT 3.24 W, 1 CHANNEL, AUDIO AMPLIFIER, BGA9
TPA2012D2RTJ 2.1 W, 2 CHANNEL, AUDIO AMPLIFIER, PQCC20
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
TPA2011D1 制造商:TI 制造商全稱(chēng):Texas Instruments 功能描述:3.2W Mono Filter-Free Class-D Audio Power Amplifier With Auto-Recovering Short-Circuit Protection
TPA2011D1_12 制造商:TI 制造商全稱(chēng):Texas Instruments 功能描述:3.2W Mono Filter-Free Class-D Audio Power Amplifier
TPA2011D1YFFEVM 功能描述:音頻 IC 開(kāi)發(fā)工具 TPA2011D1YFF Eval Mod RoHS:否 制造商:Texas Instruments 產(chǎn)品:Evaluation Kits 類(lèi)型:Audio Amplifiers 工具用于評(píng)估:TAS5614L 工作電源電壓:12 V to 38 V
TPA2011D1YFFR 功能描述:音頻放大器 3.2W mono class-D RoHS:否 制造商:STMicroelectronics 產(chǎn)品:General Purpose Audio Amplifiers 輸出類(lèi)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
TPA2011D1YFFT 功能描述:音頻放大器 3.2W mono class-D RoHS:否 制造商:STMicroelectronics 產(chǎn)品:General Purpose Audio Amplifiers 輸出類(lèi)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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