- 您現在的位置：買賣IC網 > PDF目錄98272 > TPA3008D2PHPR (TEXAS INSTRUMENTS INC) 10 W, 2 CHANNEL, AUDIO AMPLIFIER, PQFP48 PDF資料下載
參數資料
| 型號： | TPA3008D2PHPR |
| 廠商： | TEXAS INSTRUMENTS INC |
| 元件分類： | 音頻／視頻放大 |
| 英文描述： | 10 W, 2 CHANNEL, AUDIO AMPLIFIER, PQFP48 |
| 封裝： | GREEN, PLASTIC, HTQFP-48 |
| 文件頁數： | 14/31頁 |
| 文件大小： | 654K |
| 代理商： | TPA3008D2PHPR |
第1頁第2頁第3頁第4頁第5頁第6頁第7頁第8頁第9頁第10頁第11頁第12頁第13頁當前第14頁第15頁第16頁第17頁第18頁第19頁第20頁第21頁第22頁第23頁第24頁第25頁第26頁第27頁第28頁第29頁第30頁第31頁
Analyzer
20 Hz 20 kHz
(a) Basic ClassAB
APA
Signal
Generator
Power Supply
Analyzer
20 Hz 20 kHz
R
L
(b) Filter-Free and Traditional Class-D
Class-D APA
Signal
Generator
Power Supply
R
L
Low-Pass RC
Filter
Low-Pass RC
Filter
(A)
(A) For efficiency measurements with filter-free class-D, RL should be an inductive load like a speaker.
www.ti.com
SLOS435C – MAY 2004 – REVISED AUGUST 2010
Figure 21. Audio Measurement Systems
The TPA3008D2 uses a modulation scheme that does not require an output filter for operation, but they do
sometimes require an RC low-pass filter when making measurements. This is because some analyzer inputs
cannot accurately process the rapidly changing square-wave output and therefore record an extremely high level
of distortion. The RC low-pass measurement filter is used to remove the modulated waveforms so the analyzer
can measure the output sine wave.
DIFFERENTIAL INPUT AND BTL OUTPUT
All of the class-D APAs and many class-AB APAs have differential inputs and bridge-tied load (BTL) outputs.
Differential inputs have two input pins per channel and amplify the difference in voltage between the pins.
Differential inputs reduce the common-mode noise and distortion of the input circuit. BTL is a term commonly
used in audio to describe differential outputs. BTL outputs have two output pins providing voltages that are 180
degrees out of phase. The load is connected between these pins. This has the added benefits of quadrupling the
output power to the load and eliminating a dc blocking capacitor.
A block diagram of the measurement circuit is shown in Figure 22. The differential input is a balanced input,
meaning the positive (+) and negative (-) pins have the same impedance to ground. Similarly, the BTL output
equates to a balanced output.
Copyright 2004–2010, Texas Instruments Incorporated
21
Product Folder Link(s): TPA3008D2
相關PDF資料 |
PDF描述 |
|---|---|
| TPA3008D2PHP | 10 W, 2 CHANNEL, AUDIO AMPLIFIER, PQFP48 |
| TPA3008D2PHPRG4 | 10 W, 2 CHANNEL, AUDIO AMPLIFIER, PQFP48 |
| TPA3008D2PHPG4 | 10 W, 2 CHANNEL, AUDIO AMPLIFIER, PQFP48 |
| TPA301DGNRG4 | 0.7 W, 1 CHANNEL, AUDIO AMPLIFIER, PDSO8 |
| TPA301DG4 | 0.7 W, 1 CHANNEL, AUDIO AMPLIFIER, PDSO8 |
相關代理商/技術參數 |
參數描述 |
|---|---|
| TPA3008D2PHPRG4 | 功能描述:音頻放大器 10-W Stereo 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 |
| TPA3009D2PHP | 制造商:Texas Instruments 功能描述: |
| TPA3009D2PHPR | 制造商:Texas Instruments 功能描述: |
| TPA301 | 制造商:TI 制造商全稱:Texas Instruments 功能描述:350-mW MONO AUDIO POWER AMPLIFIER |
| TPA301_07 | 制造商:TI 制造商全稱:Texas Instruments 功能描述:350-mW MONO AUDIO POWER AMPLIFIER |
發布緊急采購，3分鐘左右您將得到回復。