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參數資料
| 型號： | TPA2016D2RTJT |
| 廠商： | TEXAS INSTRUMENTS INC |
| 元件分類： | 音頻／視頻放大 |
| 英文描述： | 2.8 W, 2 CHANNEL, AUDIO AMPLIFIER, PQCC20 |
| 封裝： | 4 X 4 MM, GREEN, PLASTIC, QFN-20 |
| 文件頁數： | 3/38頁 |
| 文件大小： | 1216K |
| 代理商： | TPA2016D2RTJT |
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APPLICATION INFORMATION
AUTOMATIC GAIN CONTROL
www.ti.com........................................................................................................................................................ SLOS524D – JUNE 2008 – REVISED AUGUST 2009
The Automatic Gain Control (AGC) feature provides continuous automatic gain adjustment to the amplifier
through an internal PGA. This feature enhances the perceived audio loudness and at the same time prevents
speaker damage from occurring (Limiter function).
The AGC function attempts to maintain the audio signal gain as selected by the user through the Fixed Gain,
Limiter Level, and Compression Ratio variables. Other advanced features included are Maximum Gain and Noise
Gate Threshold. Table 1 describes the function of each variable in the AGC function.
Table 1. TPA2016D2 AGC Variable Descriptions
VARIABLE
DESCRIPTION
Maximum Gain
The gain at the lower end of the compression region.
Fixed Gain
The normal gain of the device when the AGC is inactive.
The fixed gain is also the initial gain when the device comes out of shutdown mode or when the AGC is
disabled.
Limiter Level
The value that sets the maximum allowed output amplitude.
Compression Ratio
The relation between input and output voltage.
Noise Gate Threshold
Below this value, the AGC holds the gain to prevent breathing effects.
Attack Time
The minimum time between two gain decrements.
Release Time
The minimum time between two gain increments.
Hold Time
The time it takes for the very first gain increment after the input signal amplitude decreases.
Copyright 2008–2009, Texas Instruments Incorporated
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Product Folder Link(s): TPA2016D2
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相關代理商/技術參數 |
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|---|---|
| TPA2016D2V1YZHR | 制造商:Texas Instruments 功能描述: |
| TPA2016D2YZHR | 功能描述:音頻放大器 1.7W/Ch Stereo Class D Aud Amp RoHS:否 制造商:STMicroelectronics 產品: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 |
| TPA2016D2YZHT | 功能描述:音頻放大器 1.7W/Ch Stereo Class D Aud Amp RoHS:否 制造商:STMicroelectronics 產品: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 |
| TPA2016DYZHT2 | 制造商:Texas Instruments 功能描述: |
| TPA2017D2 | 制造商:TI 制造商全稱:Texas Instruments 功能描述:2.8-W/Ch Stereo Class-D Audio Amplifier with SmartGainTM Dynamic Range Compression and AGC |
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