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| 型号： | TDA8933BTW |
| 厂商： | NXP SEMICONDUCTORS |
| 元件分类： | 音频／视频放大 |
| 英文描述： | Class D Audio Amplifier |
| 中文描述： | 20.6 W, 2 CHANNEL, AUDIO AMPLIFIER, PDSO32 |
| 封装： | 6.10 MM, 0.65 MM PITCH, PLASTIC, SOT-249-1, HTSSOP-32 |
| 文件页数： | 3/42页 |
| 文件大小： | 245K |
| 代理商： | TDA8933BTW |
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TDA8933B_1
NXP B.V. 2008. All rights reserved.
Preliminary data sheet
Rev. 01 — 23 October 2008
11 of 42
NXP Semiconductors
TDA8933B
Class D audio amplier
8.5 Diagnostic input and output
Except for TF, whenever one of the protections is triggered pin DIAG is activated to LOW
level (see Table 6). An internal current source will pull up the open-drain DIAG output to
approximately 2.5 V. This current source can deliver approximately 50
A. The DIAG pin
refers to pin CGND. The diagnostic output signal during different short circuit conditions is
illustrated in Figure 5. Using pin DIAG as input, a voltage < 0.8 V will put the device into
Fault mode.
8.6 Differential inputs
For a high common-mode rejection ratio and for maximum exibility in the application the
audio inputs are fully differential. By connecting the inputs anti-parallel the phase of one of
the two channels can be inverted so that the amplier can then operate as a mono BTL
amplier. The input conguration for a mono BTL application is illustrated in Figure 6.
In the SE conguration it is also recommended to connect the two differential inputs in
anti-phase. This has advantages for the current handling of the power supply at low signal
frequencies and minimizes supply pumping (see also Section 14.8).
Fig 5.
Diagnostic output for different short circuit conditions
001aad759
≈ 50 ms
shorted load
amplifier
restart
no restart
≈ 50 ms
0 V
2.4 V
Vo
short to
supply line
0 V
2.4 V
Vo
Fig 6.
Input conguration for a mono BTL application
001aad760
IN1P
OUT1
audio
input
IN2P
IN2N
IN1N
OUT2
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| TDA8933BTW/N2,112 | 功能描述:音频放大器 Class D audio amplifier 32 leads 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 |
| TDA8933BTW/N2,118 | 功能描述:音频放大器 Class D audio amplifier 32 leads 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 |
| TDA8933BTW/N2,512 | 功能描述:音频放大器 TDA8933BTW/HTSSOP32/TUBEDP//N2 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 |
| TDA8933BTW/N2,518 | 功能描述:音频放大器 TDA8933BTW/HTSSOP32/REEL13DP// 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 |
| TDA8933T | 功能描述:音频放大器 2X10W BTL CLASS D AMP+VOLCTRL 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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