參數(shù)資料
型號: TDA7491P
廠商: STMICROELECTRONICS
元件分類: 音頻/視頻放大
英文描述: 10 W, 2 CHANNEL, AUDIO AMPLIFIER, PDSO36
封裝: ROHS COMPLIANT, SSOP-36
文件頁數(shù): 29/40頁
文件大?。?/td> 714K
代理商: TDA7491P
TDA7491P
Applications information
Doc ID 13540 Rev 4
35/40
7.5
Filterless modulation
The output modulation scheme of the BTL is called unipolar pulse width modulation (PWM).
The differential output voltages change between 0 V and +VCC and between 0 V and -VCC.
This is in contrast to the traditional bipolar PWM outputs which change between +VCC
and -VCC.
An advantage of this scheme is that it effectively doubles the switching frequency of the
differential output waveform. The OUTP and OUTN are in the same phase when the input is
zero, then the switching current is low and the loss in the load is small. In practice, a short
delay is introduced between these two outputs in order to avoid the BTL output switching at
the same time.
TDA7491P can be used without a filter before the speaker, because the frequency of the
TDA7491P output is beyond the audio frequency, the audio signal can be recovered by the
inherent inductance of the speaker and natural filter of the human ear.
Figure 54.
Unipolar PWM output
INP
INN
OUTP
OUTN
Differential
OUT
相關(guān)PDF資料
PDF描述
TDA749213TR 50 W, 2 CHANNEL, AUDIO AMPLIFIER, PDSO36
TDA7492 50 W, 2 CHANNEL, AUDIO AMPLIFIER, PDSO36
TDA7492MV13TR 50 W, 1 CHANNEL, AUDIO AMPLIFIER, PDSO36
TDA7492MV 50 W, 1 CHANNEL, AUDIO AMPLIFIER, PDSO36
TDA7492P 25 W, 2 CHANNEL, AUDIO AMPLIFIER, PDSO36
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
TDA7491P13TR 功能描述:音頻放大器 20W Dual BTL Class D 18V VCC Audio Amp 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
TDA7492 功能描述:音頻放大器 50W + 50W Dual BTL Class-D 4-Select dB 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
TDA749213TR 功能描述:音頻放大器 50W + 50W Dual BTL Class-D 4-Select dB 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
TDA7492ETR 功能描述:IC AUDIO AMP CLASS D 36POWERSSO 制造商:stmicroelectronics 系列:- 包裝:剪切帶(CT) 零件狀態(tài):在售 類型:D 類 輸出類型:1-通道(單聲道) 不同負(fù)載時的最大輸出功率 x 通道數(shù):50W x 1 @ 6 歐姆 電壓 - 電源:10 V ~ 26 V 特性:消除爆音,差分輸入,靜音,短路和熱保護,待機 安裝類型:表面貼裝 工作溫度:0°C ~ 70°C(TA) 供應(yīng)商器件封裝:PowerSSO-36 EPU 封裝/外殼:36-FSOP(0.295",7.50mm 寬)裸露焊盤 標(biāo)準(zhǔn)包裝:1
TDA7492MV 功能描述:音頻放大器 50W Mono BTL Class D 10 to 26V 4Select dB 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