參數(shù)資料
型號(hào)： TAS5706APAPR
廠商： TEXAS INSTRUMENTS INC
元件分類： 音頻／視頻放大
英文描述： 20.6 W, 2 CHANNEL, AUDIO AMPLIFIER, PQFP64
封裝： 10 X 10 MM, GREEN, PLASTIC, HTQFP-64
文件頁(yè)數(shù)： 32/71頁(yè)
文件大?。?/td> 1554K
代理商： TAS5706APAPR
Calculation of Output Signal Level of TAS5706A/B Feedback Power Stage
SLOS606D – MARCH 2009 – REVISED SEPTEMBER 2009............................................................................................................................................. www.ti.com
(Gain Is independent of PVCC)
The gain of the TAS5706A/B is the total digital gain of the controller multiplied by the gain of the power stage.
For a half-bridge channel of the TAS5706A/B power stage, the gain is simply:
Power stage gain = 13 × VRMS / Modulation Level
Modulation level = fraction of full-scale modulation of the PWM signal at the input of the power stage.
VRMS = Audio voltage level at the output of the power stage = 13 × Modulation Level
For the TAS5706A/B controller, the gain is the programmed digital gain multiplied by a scaling factor, called the
maximum modulation level. The maximum modulation level is derived from the modulation limit programmed in
the controller, which limits duty cycle to a set number of percent above 0% and below 100%. Setting the
modulation limit to 97.7% (default) limits the duty cycle between 2.3% and 97.7%.
Controller gain = digital gain × maximum modulation level × (modulation level/digital FFS)
Digital FFS = digital input fraction of full scale
Modulation limit = 97.7%
Maximum modulation level = 2 × modulation limit – 1 = 0.954
The output signal level of the TAS5706A/B can now be calculated.
VRMS = digital FFS × digital gain × maximum modulation level × 13
With the modulation limit set at the default level of 97.7%, this becomes:
VRMS = digital FFS × digital gain × 12.4
(Single-ended)
VRMS = digital FFS × digital gain × 24.8
(BTL)
Example: Input = –20 dbFS; volume = 0 dB; biquads = ALL PASS; modulation index = 97.7%; mode = BTL
Output VRMS = 24.8 × 0.1 × 1 = 2.48 V
38
Copyright 2009, Texas Instruments Incorporated
Product Folder Link(s): TAS5706A TAS5706B
相關(guān)PDF資料
PDF描述
TAS5706APAP 20.6 W, 2 CHANNEL, AUDIO AMPLIFIER, PQFP64
TAS5706PAPRG4 20.6 W, 2 CHANNEL, AUDIO AMPLIFIER, PQFP64
TAS5706PAPR 20.6 W, 2 CHANNEL, AUDIO AMPLIFIER, PQFP64
TAS5706PAP 20.6 W, 2 CHANNEL, AUDIO AMPLIFIER, PQFP64
TAS5706PAPG4 20.6 W, 2 CHANNEL, AUDIO AMPLIFIER, PQFP64
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
TAS5706APAPRG4 功能描述:音頻放大器 AUDIO Pwr STAGE & Proc 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
TAS5706BPAP 功能描述:音頻放大器 20W Closed-loop I2S Audio Power 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
TAS5706BPAPR 功能描述:音頻放大器 20W Closed-loop I2S Audio Power 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
TAS5706EVM 功能描述:音頻 IC 開(kāi)發(fā)工具 TAS5706EVM Eval Mod RoHS:否 制造商:Texas Instruments 產(chǎn)品:Evaluation Kits 類型:Audio Amplifiers 工具用于評(píng)估:TAS5614L 工作電源電壓:12 V to 38 V
TAS5706EVM2 功能描述:音頻 IC 開(kāi)發(fā)工具 TAS5706EVM2 Eval Mod RoHS:否 制造商:Texas Instruments 產(chǎn)品:Evaluation Kits 類型:Audio Amplifiers 工具用于評(píng)估:TAS5614L 工作電源電壓:12 V to 38 V
發(fā)布緊急采購(gòu)，3分鐘左右您將得到回復(fù)。

采購(gòu)需求

(若只采購(gòu)一條型號(hào)，填寫(xiě)一行即可)

發(fā)布成功！您可以繼續(xù)發(fā)布采購(gòu)。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

發(fā)布成功！您可以繼續(xù)發(fā)布采購(gòu)。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

*型號(hào) *數(shù)量 廠商 批號(hào) 封裝
添加更多采購(gòu)

我的聯(lián)系方式

*
*
*