- 您現在的位置：買賣IC網 > PDF目錄98272 > TPA3005D2PHPRG4 (TEXAS INSTRUMENTS INC) 6 W, 2 CHANNEL, AUDIO AMPLIFIER, PQFP48 PDF資料下載
參數資料
| 型號： | TPA3005D2PHPRG4 |
| 廠商： | TEXAS INSTRUMENTS INC |
| 元件分類： | 音頻／視頻放大 |
| 英文描述： | 6 W, 2 CHANNEL, AUDIO AMPLIFIER, PQFP48 |
| 封裝： | GREEN, PLASTIC, HTQFP-48 |
| 文件頁數： | 15/30頁 |
| 文件大小： | 643K |
| 代理商： | TPA3005D2PHPRG4 |
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頁第14頁當前第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
R
FILT
R
L
R
FILT
C
FILT
V
L= VIN
V
OUT
R
ANA
C
ANA
R
ANA
C
ANA
C
FILT
To APA
GND
AP Analyzer Input
RC Low-Pass Filters
Load
V
OUT
V
IN
+
R
ANA
R
ANA)
R
FILT
1 ) j
w
O
f
C +
2
f
MAX
C
FILT +
1
2p
f
C
R
FILT
SLOS427A – MAY 2004 – REVISED AUGUST 2010
www.ti.com
Figure 22. Measurement Low-Pass Filter Derivation Circuit-Class-D APAs
The transfer function for this circuit is shown in Equation 8 where wO = REQCEQ, REQ = RFILT || RANA and
CEQ = (CFILT + CANA). The filter frequency should be set above fMAX, the highest frequency of the measurement
bandwidth, to avoid attenuating the audio signal. Equation 9 provides this cutoff frequency, fC. The value of RFILT
must be chosen large enough to minimize current that is shunted from the load, yet small enough to minimize the
attenuation of the analyzer-input voltage through the voltage divider formed by RFILT and RANA. A rule of thumb is
that RFILT should be small (~100 ) for most measurements. This reduces the measurement error to less than
1% for RANA ≥ 10 k.
(8)
(9)
An exception occurs with the efficiency measurements, where RFILT must be increased by a factor of ten to
reduce the current shunted through the filter. CFILT must be decreased by a factor of ten to maintain the same
cutoff frequency. See Table 4 for the recommended filter component values.
Once fC is determined and RFILT is selected, the filter capacitance is calculated using Equation 9. When the
calculated value is not available, it is better to choose a smaller capacitance value to keep fC above the minimum
desired value calculated in Equation 10.
(10)
Table 4 shows recommended values of RFILT and CFILT based on common component values. The value of fC
was originally calculated to be 28 kHz for an fMAX of 20 kHz. CFILT, however, was calculated to be 57,000 pF, but
the nearest values of 56,000 pF and 51,000 pF were not available. A 47,000-pF capacitor was used instead, and
fC is 34 kHz, which is above the desired value of 28 kHz.
Table 4. Typical RC Measurement Filter Values
MEASUREMENT
RFILT
CFILT
Efficiency
1000
5,600 pF
All other measurements
100
56,000 pF
22
Copyright 2004–2010, Texas Instruments Incorporated
Product Folder Link(s): TPA3005D2
相關PDF資料 |
PDF描述 |
|---|---|
| TPA3007D1PWR | 6.5 W, 1 CHANNEL, AUDIO AMPLIFIER, PDSO24 |
| TPA3007D1PW | 6.5 W, 1 CHANNEL, AUDIO AMPLIFIER, PDSO24 |
| TPA3007D1PWRG4 | 6.5 W, 1 CHANNEL, AUDIO AMPLIFIER, PDSO24 |
| TPA3007D1PWG4 | 6.5 W, 1 CHANNEL, AUDIO AMPLIFIER, PDSO24 |
| TPA3008D2PHPR | 10 W, 2 CHANNEL, AUDIO AMPLIFIER, PQFP48 |
相關代理商/技術參數 |
參數描述 |
|---|---|
| TPA3007D1 | 制造商:TI 制造商全稱:Texas Instruments 功能描述:6.5-W MONO CLASS-D AUDIO POWER AMPLIFIER |
| TPA3007D1_06 | 制造商:TI 制造商全稱:Texas Instruments 功能描述:6.5-W MONO CLASS-D AUDIO POWER AMPLIFIER |
| TPA3007D1EVM | 功能描述:音頻 IC 開發工具 TPA3007D1 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 |
| TPA3007D1PW | 功能描述:音頻放大器 Mono Med Power Filter-Free 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 |
| TPA3007D1PW | 制造商:Texas Instruments 功能描述:IC AUDIO PWR AMP CLASS D 6.5 |
發布緊急采購，3分鐘左右您將得到回復。