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参数资料
| 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： | 19/42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
26 of 42
NXP Semiconductors
TDA8933B
Class D audio amplier
R1 = series resistors (
)
R2 = series resistors (
)
(9)
Where:
REQ = equivalent resistance ()
R3 = parallel resistor (
)
Zi = internal input impedance ()
Example:
Substituting R1 = R2 = 4.7 k
,Z
i = 100 k and R3=22k in Equation 8 and Equation 9
results in a gain of Gv(tot) = 26.3 dB.
14.6 Device synchronization
If two or more TDA8933B devices are used in one application it is recommended that all
the devices are synchronized at the same switching frequency to avoid beat tones. This
can be done by connecting all OSCIO pins together and conguring one of the devices as
master while the others are congured as slaves (see Figure 10).
A device is congured as master when a resistor Rosc is connected between pin OSCREF
and pin VSSD(HW), thus setting the carrier frequency. Pin OSCIO of the master is then
congured as an oscillator output for synchronization. The OSCREF pins of the slave
devices should be shorted to pin VSSD(HW), conguring pin OSCIO as an input.
R
EQ
R3
Z
i
×
R3
Z
i
+
------------------
=
Fig 10. Master/slave concept in a two-chip application
010aaa138
Rosc
39 k
100 nF
Cosc
IC1
TDA8933B
OSCREF
OSCIO
IC2
TDA8933B
master
slave
OSCIO
OSCREF
VSSD(HW)
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相关代理商/技术参数 |
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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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