參數(shù)資料
型號： TPA2016D2RTJR
廠商： Texas Instruments
文件頁數(shù)： 6/39頁
文件大?。?/td> 0K
描述： IC AMP AUDIO PWR 2.8W D 20QFN
標準包裝： 1
類型： D 類
輸出類型： 2 通道（立體聲）
在某負載時最大輸出功率 x 通道數(shù)量： 2.8W x 2 @ 4 歐姆
電源電壓： 2.5 V ~ 5.5 V
特點： 差分輸入，I²C，短路和熱保護，關(guān)機，音量控制
安裝類型： 表面貼裝
供應(yīng)商設(shè)備封裝： 20-QFN 裸露焊盤（4x4）
封裝/外殼： 20-WFQFN 裸露焊盤
包裝： 標準包裝
產(chǎn)品目錄頁面： 876 (CN2011-ZH PDF)
其它名稱： 296-25430-6
V
-dBV
O
U
T
V
-dBV
IN
Increasing
Limiter
Level
Decreasing
Limiter
Level
LimiterLevel= 500mW
LimiterLevel= 630mW
= 400
LimiterLevel
mW
V
-dBV
O
U
T
V
-dBV
IN
1
:1
LargeFixedGain
Small
Fixed
Gain
Input signal initial amplitude - |Current input signal amplitude|
Output signal amplitude =
Compression ratio
(1)
0dBV
| 32 dBV|
8dBV =
4
-
(2)
SLOS524D – JUNE 2008 – REVISED AUGUST 2009........................................................................................................................................................ www.ti.com
Figure 28. Output Signal vs Input Signal State Diagram Showing Different Limiter Level Configurations
The limiter level and the fixed gain influence each other. If the fixed gain is set high, the AGC has a large limiter
range. The fixed gain is set low, the AGC has a short limiter range. Figure 29 illustrates the two examples:
Figure 29. Output Signal vs. Input Signal State Diagram Showing Same Limiter Level Configurations with
Different Fixed Gain Configurations
Compression Ratio: The compression ratio sets the relation between input and output signal outside the limiter
level region. The compression ratio compresses the dynamic range of the audio. For example if the audio source
has a dynamic range of 60dB and compression ratio of 2:1 is selected, then the output has a dynamic range of
30dB. Most small form factor speakers have small dynamic range. Compression ratio allows audio with large
dynamic range to fit into a speaker with small dynamic range.
The compression ratio also increases the loudness of the audio without increasing the peak voltage. The higher
the compression ratio, the louder the perceived audio.
For example:
A compression ratio of 4:1 is selected (meaning that a 4dB change in the input signal results in a 1dB signal
change at the output)
A fixed gain of 0dB is selected and the maximum audio level is at 0dBV.
When the input signal decreases to –32dBV, the amplifier increases the gain to 24dB in order to achieve an
output of –8dBV. The output signal amplitude equation is:
In this example:
14
Copyright 2008–2009, Texas Instruments Incorporated
Product Folder Link(s): TPA2016D2
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
TPA2016D2RTJT 功能描述:音頻放大器 1.7-W/Ch St 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
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(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
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(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
TPA2016DYZHT2 制造商:Texas Instruments 功能描述:
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