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參數資料
| 型號： | TPA2026D2YZHR |
| 廠商： | TEXAS INSTRUMENTS INC |
| 元件分類： | 音頻／視頻放大 |
| 英文描述： | AUDIO AMPLIFIER, PBGA16 |
| 封裝： | 2.20 X 2.20 MM, GREEN, DSBGA-16 |
| 文件頁數： | 10/39頁 |
| 文件大?。?/td> | 823K |
| 代理商： | TPA2026D2YZHR |
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1
Gain change = 1
× Input signal change
Compression ratio
-
÷
è
1
24 dB =
1
× 32
4
-
÷
è
V
-dBV
O
U
T
V
-dBV
IN
Increasing
FixedGain
Decreasing
1
:1
2 :
1
4 :1
8 :1
1
:1
2 :
1
4 :1
8 :1
Rotation
Point@
lowergain
Rotation
Point@
highergain
SLOS649A – MARCH 2010 – REVISED JANUARY 2011
www.ti.com
The gain change equation is:
(3)
(4)
Consider the following when setting the compression ratio:
Dynamic range of the speaker
Fixed gain level
Limiter Level
Audio Loudness vs Output Dynamic Range.
Figure 36 shows different settings for dynamic range and different fixed gain selected but no limiter level.
Figure 36. Output Signal vs Input Signal State Diagram Showing Different Compression Ratio
Configurations with Different Fixed Gain Configurations
The rotation point is always at VIN = 10dBV. The rotation point is not located at the intersection of the limiter
region and the compression region. By changing the fixed gain the rotation point will move in the y-axis direction
only, as shown in the previous graph.
Interaction Between Compression Ratio and Limiter Range: The compression ratio can be limited by the
limiter range. Note that the limiter range is selected by the limiter level and the fixed gain.
For a setting with large limiter range, the amount of gain steps in the AGC remaining to perform compression are
limited. Figure 37 shows two examples, where the fixed gain was changed.
1. Small limiter range yielding a large compression region (small fixed gain).
2. Large limiter range yielding a small compression region (large fixed gain).
18
Copyright 2010–2011, Texas Instruments Incorporated
Product Folder Link(s): TPA2026D2
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| TPA2026D2YZHT | 功能描述:音頻放大器 3.2W/Ch Stereo Smart Gain 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 |
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| TPA2028D1_10 | 制造商:TI 制造商全稱:Texas Instruments 功能描述:3-W Mono Class-D Audio Amplifier with Fast Gain Ramp SmartGaina?￠ AGC/DRC |
| TPA2028D1YZFEVM | 功能描述:音頻 IC 開發(fā)工具 TPA2028D1YZFEVM Eval Mod RoHS:否 制造商:Texas Instruments 產品:Evaluation Kits 類型:Audio Amplifiers 工具用于評估:TAS5614L 工作電源電壓:12 V to 38 V |
| TPA2028D1YZFEVM | 制造商:Texas Instruments 功能描述:DEVELOPMENT TOOL |
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