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参数资料
| 型号： | TDA8946AJ |
| 厂商： | NXP SEMICONDUCTORS |
| 元件分类： | 音频／视频放大 |
| 英文描述： | 15 W, 2 CHANNEL, AUDIO AMPLIFIER, PZIP17 |
| 封装： | PLASTIC, DIL-BENT-SIL, 17 PIN |
| 文件页数： | 8/20页 |
| 文件大小： | 376K |
| 代理商： | TDA8946AJ |
Philips Semiconductors
TDA8946AJ
2 x 15 W BTL audio amplier with DC gain control
Product data
Rev. 01 — 01 March 2002
16 of 20
9397 750 09434
Koninklijke Philips Electronics N.V. 2002. All rights reserved.
At VCC =18V and RL =8 the measured worst-case sine-wave dissipation is 17 W;
dissipation - is: 150
50 = 100 °C.
P
× R
th(tot) = 100 °C
Rth(tot) = 100/17 = 5.88 K/W
Rth(h-a) =Rth(tot) Rth(j-mb) = 5.88 2.5 = 3.38 K/W.
The calculation above is for an application at worst-case (stereo) sine-wave output
signals. In practice music signals will be applied, which decreases the maximum
power dissipation to approximately half of the sine-wave power dissipation (see
Section 8.2.2). This allows for the use of a smaller heatsink:
P
× R
th(tot) = 100 °C
Rth(tot) = 100/(0.5 × 17) = 11.76 K/W
Rth(h-a) =Rth(tot) Rth(j-mb) = 11.76 2.5 = 9.26 K/W.
To increase the lifetime of the IC, Tj(max) should be reduced to 125 °C. This requires a
heatsink of approximately 6.3 K/W for music signals.
15. Test information
15.1 Quality information
The
“General Quality Specication for Integrated Circuits, SNW-FQ-611D” is
applicable (ordering code 9397 750 05459).
15.1.1
Test conditions
Tamb =25 °C; VCC = 18 V; f = 1 kHz; RL =8 ; audio pass band 22 Hz to 22 kHz;
unless otherwise specied.
Remark: In the graphs as function of frequency no bandpass lter was applied;
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相关代理商/技术参数 |
参数描述 |
|---|---|
| TDA8946AJ/N2,112 | 功能描述:音频放大器 2X15W AUDIO AMP VOL CTRL RoHS:否 制造商:STMicroelectronics 产品:General Purpose Audio Amplifiers 输出类型:Digital 输出功率: THD + 噪声: 工作电源电压:3.3 V 电源电流: 最大功率耗散: 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:TQFP-64 封装:Reel |
| TDA8946J | 制造商:PHILIPS 制造商全称:NXP Semiconductors 功能描述:2 x 15 W stereo Bridge Tied Load BTL audio amplifier |
| TDA8946J/N1,112 | 功能描述:音频放大器 AUDIO AMP 2X15W RoHS:否 制造商:STMicroelectronics 产品:General Purpose Audio Amplifiers 输出类型:Digital 输出功率: THD + 噪声: 工作电源电压:3.3 V 电源电流: 最大功率耗散: 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:TQFP-64 封装:Reel |
| TDA8947J | 制造商:PHILIPS 制造商全称:NXP Semiconductors 功能描述:4-channel audio amplifier (SE: 1 W to 25 W; BTL: 4 W to 50 W) |
| TDA8947J/N3,112 | 功能描述:音频放大器 3/4 CHANNEL AUD AMP RoHS:否 制造商:STMicroelectronics 产品:General Purpose Audio Amplifiers 输出类型:Digital 输出功率: THD + 噪声: 工作电源电压:3.3 V 电源电流: 最大功率耗散: 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:TQFP-64 封装:Reel |
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