- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄98270 > TPA2005D1DRBRQ1 (TEXAS INSTRUMENTS INC) 1.45 W, 1 CHANNEL, AUDIO AMPLIFIER, PDSO8 PDF資料下載
參數(shù)資料
| 型號： | TPA2005D1DRBRQ1 |
| 廠商： | TEXAS INSTRUMENTS INC |
| 元件分類： | 音頻／視頻放大 |
| 英文描述： | 1.45 W, 1 CHANNEL, AUDIO AMPLIFIER, PDSO8 |
| 封裝： | 3 X 3 MM, GREEN, PLASTIC, SON-8 |
| 文件頁數(shù)： | 7/28頁 |
| 文件大?。?/td> | 993K |
| 代理商： | TPA2005D1DRBRQ1 |
第1頁第2頁第3頁第4頁第5頁第6頁當前第7頁第8頁第9頁第10頁第11頁第12頁第13頁第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
0,65 mm
0,38 mm
Solder Mask: 1,4 mm x 1,85 mm centered in package
0,7 mm
1,4 mm
Make solder paste a hatch pattern to fill 50%
3,3 mm
1,95 mm
0,33 mm plugged vias (5 places)
www.ti.com
SLOS474C – AUGUST 2005 – REVISED MARCH 2010
Figure 32. TPA2005D1 8-Pin QFN (DRB) Board Layout (Top View)
ELIMINATING THE OUTPUT FILTER WITH THE TPA2005D1
This section focuses on why the user can eliminate the output filter with the TPA2005D1.
Effect on Audio
The class-D amplifier outputs a pulse-width modulated (PWM) square wave, which is the sum of the switching
waveform and the amplified input audio signal. The human ear acts as a band-pass filter such that only the
frequencies between approximately 20 Hz and 20 kHz are passed. The switching frequency components are
much greater than 20 kHz, so the only signal heard is the amplified input audio signal.
Traditional Class-D Modulation Scheme
The traditional class-D modulation scheme, which is used in the TPA005Dxx family, has a differential output in
which each output is 180 degrees out of phase and changes from ground to the supply voltage, VDD. Therefore,
the differential pre-filtered output varies between positive and negative VDD, where filtered 50% duty cycle yields
0 V across the load. The traditional class-D modulation scheme with voltage and current waveforms is shown in
Figure 33. Note that, even at an average of 0 V across the load (50% duty cycle), the current to the load is high,
causing a high loss and thus causing a high supply current.
Copyright 2005–2010, Texas Instruments Incorporated
15
Product Folder Link(s): TPA2005D1-Q1
相關PDF資料 |
PDF描述 |
|---|---|
| TPA2005D1GQYRQ1 | 1.45 W, 1 CHANNEL, AUDIO AMPLIFIER, PBGA |
| TPA2005D1ZQYRQ1 | 1.45 W, 1 CHANNEL, AUDIO AMPLIFIER, PBGA |
| TPA2005D1GQYR | 1.45 W, 1 CHANNEL, AUDIO AMPLIFIER, PBGA15 |
| TPA2005D1DRBR | 1.45 W, 1 CHANNEL, AUDIO AMPLIFIER, PDSO8 |
| TPA2005D1ZQYRG1 | 1.45 W, 1 CHANNEL, AUDIO AMPLIFIER, PBGA15 |
相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| TPA2005D1EVM | 功能描述:音頻 IC 開發(fā)工具 TPA2005D1 Eval Mod RoHS:否 制造商:Texas Instruments 產(chǎn)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 |
| TPA2005D1GQYR | 功能描述:音頻放大器 Mono Fully Diff Filter-Free Class-D 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: 安裝風格:SMD/SMT 封裝 / 箱體:TQFP-64 封裝:Reel |
| TPA2005D1-Q1 | 制造商:TI 制造商全稱:Texas Instruments 功能描述:1.4-W MONO FILTER-FREE CLASS-D AUDIO POWER AMPLIFIER |
| TPA2005D1TDGNRQ1 | 功能描述:音頻放大器 1.4W Mono Fil-Free Class-D Aud 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: 安裝風格:SMD/SMT 封裝 / 箱體:TQFP-64 封裝:Reel |
| TPA2005D1ZQYR | 功能描述:音頻放大器 Mono Fully Diff Filter-Free Class-D 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: 安裝風格:SMD/SMT 封裝 / 箱體:TQFP-64 封裝:Reel |
發(fā)布緊急采購，3分鐘左右您將得到回復。