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参数资料
| 型号： | TDA8933BTW/N2,512 |
| 厂商： | NXP SEMICONDUCTORS |
| 元件分类： | 音频／视频放大 |
| 英文描述： | 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： | 39/42页 |
| 文件大小： | 245K |
| 代理商： | TDA8933BTW/N2,512 |
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TDA8933B_1
NXP B.V. 2008. All rights reserved.
Preliminary data sheet
Rev. 01 — 23 October 2008
6 of 42
NXP Semiconductors
TDA8933B
Class D audio amplier
8.2 Mode selection and interfacing
The TDA8933B can be switched to one of four operating modes using pins POWERUP
and ENGAGE:
Sleep mode: with low supply current.
Mute mode: the ampliers are switching to idle (50 % duty cycle), but the audio signal
at the output is suppressed by disabling the Vl-converter input stages. The capacitors
on pins HVP1 and HVP2 have been charged to half the supply voltage (asymmetrical
supply only)
Operating mode: the ampliers are fully operational with an output signal
Fault mode
Both pins POWERUP and ENGAGE refer to pin CGND.
Table 4 shows the different modes as a function of the voltages on the POWERUP and
ENGAGE pins.
[1]
When there are symmetrical supply conditions, the voltage applied to pins POWERUP and ENGAGE must
never exceed the supply voltage (VDDA, VDDP1 or VDDP2).
If the transition between Mute mode and Operating mode is controlled via a time constant,
the start-up will be pop-free since the DC output offset voltage is applied gradually to the
output. The bias current setting of the V/I-converters is related to the voltage on pin
ENGAGE.
Mute mode: the bias current setting of the V/I-converters is zero (V/I-converters
disabled).
Operating mode: the bias current is at maximum.
The time constant required to apply the DC output offset voltage gradually between Mute
mode and Operating mode can be generated by applying a capacitor on pin ENGAGE.
The value of the capacitor on pin ENGAGE should be 470 nF.
Table 4.
Mode selection for the TDA8933B
Mode
Pin
POWERUP[1]
ENGAGE[1]
DIAG
Sleep
< 0.8 V
undened
Mute
2 V to 6 V
< 0.8 V
> 2 V
Operating
2 V to 6 V
2.4 V to 6 V
> 2 V
Fault
2 V to 6 V
undened
< 0.8 V
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相关代理商/技术参数 |
参数描述 |
|---|---|
| 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 |
| TDA8933T/N1,112 | 功能描述:音频放大器 2X10W BTL CLASS D 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/N1,118 | 功能描述:音频放大器 2X10W BTL CLASS D 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-T | 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 |
| TDA8939 | 制造商:PHILIPS 制造商全称:NXP Semiconductors 功能描述:Zero dead time Class-D 7.5 A power comparator |
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