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參數(shù)資料
| 型號(hào)： | TPA2015D1YZHR |
| 廠商： | TEXAS INSTRUMENTS INC |
| 元件分類： | 音頻／視頻放大 |
| 英文描述： | 1.7 W, 1 CHANNEL, AUDIO AMPLIFIER, BGA16 |
| 封裝： | 1.954 X 1.954 MM, 0.50 MM PITCH, GREEN, DSBGA-16 |
| 文件頁(yè)數(shù)： | 4/27頁(yè) |
| 文件大小： | 1016K |
| 代理商： | TPA2015D1YZHR |
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LIMITER
LEVEL
INPUT
SIGNAL
GAIN
OUTPUT
SIGNAL
AttackTime
GainStep
ReleaseTime
Inflectionpoint
LimiterLevel(VBAT>inflectionpoint)
LimiterLevel(VBAT=inflectionpoint)
LimiterLevel
SupplyVoltage
SLOS638 – MAY 2010
www.ti.com
Figure 21. SpeakerGuard Attack and Release Times
BATTERY TRACKING SPEAKERGUARD
The TPA2015D1 monitors the battery voltage and the audio signal, automatically decreasing gain when battery
voltage is low and audio output power is high. It finds the optimal gain to maximize loudness and minimize
battery current, providing louder audio and preventing early shutdown at end-of-charge battery voltages.
SpeakerGuard decreases amplifier gain when the audio signal exceeds the limiter level. The limiter level
automatically decreases when the supply voltage (VBAT) is below the inflection point. Figure 22 shows a plot of
the limiter level as a function of the supply voltage.
Figure 22. Limiter Level vs Supply Voltage
The limiter level decreases within 60 s of the supply voltage dropping below the inflection point. Although this is
slightly slower than the 26 s/dB SpeakerGuard attack time, the difference is audibly imperceptible.
12
Copyright 2010, Texas Instruments Incorporated
Product Folder Link(s): TPA2015D1
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| TPA2015D1YZHT | 1.7 W, 1 CHANNEL, AUDIO AMPLIFIER, BGA16 |
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| TPA2015D1YZHR | 制造商:Texas Instruments 功能描述:CLASS-D AUDIO AMPLIFIER IC 制造商:Texas Instruments 功能描述:IC, AUDIO AMPLIFIER, CLASS D, 2W, BGA-16 |
| TPA2015D1YZHT | 功能描述:音頻放大器 2W Class-D Audio 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 |
| TPA2016D2 | 制造商:TI 制造商全稱:Texas Instruments 功能描述:1.7-W/Ch Stereo Class-D Audio Amplifier with Dynamic Range Compression and AGC |
| TPA2016D2EVM | 功能描述:音頻 IC 開發(fā)工具 TPA2016D2EVM 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 |
| TPA2016D2RGPR | 制造商:TI 制造商全稱:Texas Instruments 功能描述:1.7-W/Ch Stereo Class-D Audio Amplifier with Dynamic Range Compression and AGC |
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