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參數資料
| 型號： | TPA2026D2YZHT |
| 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： | 11/39頁 |
| 文件大小： | 823K |
| 代理商： | TPA2026D2YZHT |
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V
O
U
T
-d
B
V
- dBV
IN
1:
1
Large Limiter
Range
Small
Compression
Region
Large
Compression
Region
Small Limiter
Range
Rotation
Point @
lower gain
Rotation
Point @
higher gain
time
Gain-dB
InputSignal
Amplitude-V
rms
time
NoiseGateThreshold
No
Audio
Gaindoesnotchange
inthisregion
www.ti.com
SLOS649A – MARCH 2010 – REVISED JANUARY 2011
Figure 37. Output Signal vs Input Signal State Diagram Showing the Effects of the Limiter Range to the
Compression Region
Noise Gate Threshold: The noise gate threshold prevents the AGC from changing the gain when there is no
audio at the input of the amplifier. The noise gate threshold stops gain changes until the input signal is above the
noise gate threshold. Select the noise gate threshold to be above the noise but below the minimum audio at the
input of the amplifier signal. A filter is needed between delta-sigma CODEC/DAC and TPA2026D2 for
effectiveness of the noise gate function. The filter eliminates the out-of-band noise from delta-sigma modulation
and keeps the CODEC/DAC output noise lower than the noise gate threshold.
Figure 38. Time Diagram Showing the Relationship Between Input Signal Amplitude, Noise Gate
Threshold, and Gain Versus Time
Maximum Gain: This variable limits the number of gain steps in the AGC. This feature is useful in order to
accomplish a more advanced output signal vs. input signal transfer characteristic.
For example, to prevent the gain from going above a certain value, reduce the maximum gain.
However, this variable will affect the limiter range and the compression region. If the maximum gain is
decreased, the limiter range and/or compression region is reduced. Figure 39 illustrates the effects.
Copyright 2010–2011, Texas Instruments Incorporated
19
Product Folder Link(s): TPA2026D2
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| TPA2028D1YZFEVM | 功能描述:音頻 IC 開發工具 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 |
| TPA2028D1YZFR | 功能描述:音頻放大器 3.0 W Mono Class-D Audio 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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