欧美成人免费电影,国产欧美一区二区三区精品酒店,精品国产a毛片,色网在线免费观看

參數資料
型號: TPA6017A2PWPR
廠商: TEXAS INSTRUMENTS INC
元件分類: 音頻/視頻放大
英文描述: 1.9 W, 2 CHANNEL, AUDIO AMPLIFIER, PDSO20
封裝: GREEN, PLASTIC, HTSSOP-20
文件頁數: 15/29頁
文件大小: 575K
代理商: TPA6017A2PWPR
TPA6017A2
SLOS386A NOVEMBER 2001 REVISED APRIL 2007
22
www.ti.com
APPLICATION INFORMATION
BTL amplifier efficiency (continued)
Table 2. Efficiency vs Output Power in 5-V 8-
BTL Systems
Output Power
(W)
Efficiency
(%)
Peak Voltage
(V)
Internal Dissipation
(W)
0.25
31.4
2.00
0.55
0.50
44.4
2.83
0.62
1.00
62.8
4.00
0.59
1.25
70.2
4.47
0.53
High peak voltages cause the THD to increase.
A final point to remember about Class-AB amplifiers is how to manipulate the terms in the efficiency equation
to utmost advantage when possible. Note that in equation 6, VDD is in the denominator. This indicates that as
VDD goes down, efficiency goes up.
crest factor and thermal considerations
Class-AB power amplifiers dissipate a significant amount of heat in the package under normal operating
conditions. A typical music CD requires 12 dB to 15 dB of dynamic range, or headroom above the average power
output, to pass the loudest portions of the signal without distortion. In other words, music typically has a crest
factor between 12 dB and 15 dB. When determining the optimal ambient operating temperature, the internal
dissipated power at the average output power level must be used. From the TPA6017A2 data sheet, one can
see that when the TPA6017A2 is operating from a 5-V supply into a 3-
speaker 4-W peaks are available.
Converting watts to dB:
P
dB +
10 Log
P
W
P
ref
+ 10Log 4W
1W
+ 6dB
(7)
Subtracting the headroom restriction to obtain the average listening level without distortion yields:
6 dB 18 dB = 12 dB (18 dB crest factor)
6 dB 15 dB = 9 dB (15 dB crest factor)
6 dB 12 dB = 6 dB (12 dB crest factor)
6 dB 9 dB = 3 dB (9 dB crest factor)
6 dB 6 dB = 0 dB (6 dB crest factor)
6 dB 3 dB = 3 dB (3 dB crest factor)
Converting dB back into watts:
P
W +
10PdB 10
P
ref
+ 63 mW (18 dB crest factor)
+ 125 mW (15 dB crest factor)
+ 250 mW (12 dB crest factor)
+ 500 mW (9 dB crest factor)
+ 1000 mW (6 dB crest factor)
(8)
+ 2000 mW (3 dB crest factor)
相關PDF資料
PDF描述
TPA6017A2PWP 1.9 W, 2 CHANNEL, AUDIO AMPLIFIER, PDSO20
TPA6017A2PWPG4 1.9 W, 2 CHANNEL, AUDIO AMPLIFIER, PDSO20
TPA6017A2PWPRG4 1.9 W, 2 CHANNEL, AUDIO AMPLIFIER, PDSO20
TPA6020A2RGWRG4 2.15 W, 2 CHANNEL, AUDIO AMPLIFIER, PQCC20
TPA6020A2RGWR 2.15 W, 2 CHANNEL, AUDIO AMPLIFIER, PQCC20
相關代理商/技術參數
參數描述
TPA6017A2PWPRG4 功能描述:音頻放大器 Stereo Cost Eff Class-AB 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
TPA6019A4PWPR 制造商:Texas Instruments 功能描述:AUDIO AMP 制造商:TI 功能描述:STEREO BTL 1W AUDIO POWER AMPLIFIER
TPA6020A2 制造商:TI 制造商全稱:Texas Instruments 功能描述:2.8-W STEREO FULLY DIFFERENTIAL AUDIO POWER AMPLIFIER
TPA6020A2EVM 功能描述:音頻 IC 開發工具 TPA6020A2 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
TPA6020A2RGW 制造商:TI 制造商全稱:Texas Instruments 功能描述:2.8-W STEREO FULLY DIFFERENTIAL AUDIO POWER AMPLIFIER
主站蜘蛛池模板: 洪江市| 祥云县| 前郭尔| 措美县| 武强县| 涿鹿县| 金阳县| 梅州市| 信宜市| 洮南市| 布尔津县| 林芝县| 蒲江县| 双鸭山市| 兴仁县| 阜南县| 江北区| 阳曲县| 淄博市| 丰都县| 青海省| 德令哈市| 额尔古纳市| 丽水市| 内乡县| 夏邑县| 陇川县| 青神县| 榆林市| 西和县| 札达县| 巴中市| 浠水县| 永修县| 准格尔旗| 五寨县| 县级市| 涡阳县| 图片| 永修县| 名山县|