參數(shù)資料
型號(hào)： TDA8932TW
廠商： NXP SEMICONDUCTORS
元件分類： 音頻／視頻放大
英文描述： 25 W, 1 CHANNEL, AUDIO AMPLIFIER, PDSO32
封裝： 6.10 MM, 0.65 MM PITCH, PLASTIC, MO-153, SOT549-1, HTSSOP-32
文件頁(yè)數(shù)： 43/45頁(yè)
文件大?。?/td> 285K
代理商： TDA8932TW
TDA8932_1
Koninklijke Philips Electronics N.V. 2006. All rights reserved.
Preliminary data sheet
Rev. 01 — 11 May 2006
7 of 45
Philips Semiconductors
TDA8932
Class-D audio amplier
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 between Mute mode and Operating mode. The bias current setting of the
VI-converters is related to the voltage on pin ENGAGE:
Mute mode: the bias current setting of the VI-converters is zero (VI-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 decoupling capacitor on pin
ENGAGE. The value of the capacitor on pin ENGAGE should be 470 nF.
8.3 Pulse width modulation frequency
The output signal of the amplier is a PWM signal with a carrier frequency of
approximately 320 kHz. Using a 2nd-order low-pass lter in the application results in an
analog audio signal across the loudspeaker. The PWM switching frequency can be set by
an external resistor Rosc connected between pins OSCREF and VSSD(HW). The carrier
frequency can be set between 300 kHz and 500 kHz. Using an external resistor of 39 k
,
the carrier frequency is set to an optimized value of 320 kHz (see Figure 5).
Fig 4.
Start-up sequence
VP
POWERUP
DREF
HVPREF
HVP1, HVP2
ENGAGE
0.43VENGAGE
0.3VENGAGE
audio
PWM
OUT1, OUT2
DIAG
OSCIO
001aae788
operating
PWM
sleep
mute
operating
fault
AUDIO
0.17VENGAGE
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
TDA8933 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Class-D audio amplifier
TDA8933B 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Class D audio amplifier
TDA8933BTW 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Class D audio amplifier
TDA8933BTW/N2,112 功能描述:音頻放大器 Class D audio amplifier 32 leads RoHS:否 制造商:STMicroelectronics 產(chǎn)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(fēng)格:SMD/SMT 封裝 / 箱體:TQFP-64 封裝:Reel
TDA8933BTW/N2,118 功能描述:音頻放大器 Class D audio amplifier 32 leads RoHS:否 制造商:STMicroelectronics 產(chǎn)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(fēng)格:SMD/SMT 封裝 / 箱體:TQFP-64 封裝:Reel
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