參數(shù)資料
型號： TAS5706PAP
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
文件頁數(shù)： 29/70頁
文件大?。?/td> 1169K
代理商： TAS5706PAP
Volume
Biquad(0x24)
From
Input
Mux
To
Output
Mux
Loudness
Biquad(0x23)
Gain=G
1ifVol
1/G
0ifVol
1/G+1/Scale
1
Scale(Vol
1/G)otherwise
-
0ifVol
1/G
1ifVol
1/G+1/Scale
Scale(Vol
1/G)otherwise
-
B0273-01
Scale=1/(1
1/G)
-
www.ti.com
SLOS550B – DECEMBER 2007 – REVISED DECEMBER 2010
Loudness Function
The TAS5706 provides a direct form I biquad for loudness on the subwoofer channel. The first biquad is
contained in a gain-compensation circuit that maintains the overall system gain at 1 or less to prevent clipping at
loud volume settings. This gain compensation is shown in Figure 46
Figure 46. Biquad Gain Control Structure
Table 1. Loudness Table Example for Gain = 4, 1/G = 0.25, Scale = 1.33
Volume
0.125
0.25
0.375
0.5
0.625
0.75
0.875
1
1.125
1.25
1.375
1.5
1.625
1.75
1.875
2
Biquad path
1
0.833
0.666
0.5
0.333
0.166
0
Direct path
0
0.166
0.333
0.5
0.666
0.833
1
Total gain
1
The biquads are implemented in a direct form-I architecture. The direct form-I structure provides a separate delay
element and mixer (gain coefficient) for each node in the biquad filter.
The five 26-bit (3.23) coefficients for the biquad are programmable via the I2C interface.
The following steps are involved in using a loudness biquad with the volume compensation feature:
1. Program the biquad with a loudness filter.
2. Program 0x26 (1/G) and 0x28 (scale).
3. Enable volume compensation in register 0x0E.
Copyright 2007–2010, Texas Instruments Incorporated
35
Product Folder Link(s): TAS5706
相關(guān)PDF資料
PDF描述
TAS5706PAPG4 20.6 W, 2 CHANNEL, AUDIO AMPLIFIER, PQFP64
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TAS5707APHP 20.6 W, 2 CHANNEL, AUDIO AMPLIFIER, PQFP48
TAS5707PHPR 20.6 W, 2 CHANNEL, AUDIO AMPLIFIER, PQFP48
TAS5707PHP 20.6 W, 2 CHANNEL, AUDIO AMPLIFIER, PQFP48
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
TAS5706PAPG4 功能描述:音頻放大器 20W stereo Dig Aud Pwr 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: 安裝風格:SMD/SMT 封裝 / 箱體:TQFP-64 封裝:Reel
TAS5706PAPR 功能描述:音頻放大器 20W stereo Dig Audio Pwr 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: 安裝風格:SMD/SMT 封裝 / 箱體:TQFP-64 封裝:Reel
TAS5706PAPRG4 功能描述:音頻放大器 20W stereo Dig Audio Pwr 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: 安裝風格:SMD/SMT 封裝 / 箱體:TQFP-64 封裝:Reel
TAS5707 制造商:TI 制造商全稱:Texas Instruments 功能描述:20-W STEREO DIGITAL AUDIO POWER AMPLIFIER WITH EQ AND DRC
TAS5707_13 制造商:TI 制造商全稱:Texas Instruments 功能描述:20-W STEREO DIGITAL AUDIO POWER AMPLIFIER WITH EQ AND DRC
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