參數(shù)資料
型號: TPA3100D2IRGZRQ1
廠商: Texas Instruments
文件頁數(shù): 14/38頁
文件大小: 0K
描述: IC AMP AUDIO PWR 21.8W D 48QFN
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: 21.8W x 2 @ 8 歐姆
電源電壓: 10 V ~ 26 V
特點: 差分輸入,靜音,短路和熱保護,關(guān)機
安裝類型: 表面貼裝
供應(yīng)商設(shè)備封裝: 48-VQFN 裸露焊盤(7x7)
封裝/外殼: 48-VFQFN 裸露焊盤
包裝: 標準包裝
配用: 296-21138-ND - EVALUATION MODULE FOR TPA3100D2
其它名稱: 296-24154-6
Adaptive Dynamic Range Control
TPA3100D2
ClosestCompetitor
t-Time=100 s/div
m
V-V
oltage=10V/div
TPA3100D2
ClosestCompetitor
t-Time=20 s/div
m
V-V
oltage=1V/div
Gain Setting Via GAIN0 and GAIN1 Inputs
TPA3100D2-Q1
www.ti.com ......................................................................................................................................................................................... SLOS557 – SEPTEMBER 2008
Figure 29. 1-kHz Sine Output at 10% THD+N
Figure 30. 8-kHz Sine Output at 10% THD+N
The Texas Instruments patent-pending adaptive dynamic range control (ADRC) technology removes the notch
inherent in class-D audio power amplifiers when they come out of clipping. This effect is more severe at higher
frequencies as shown in Figure 30.
The gain of the TPA3100D2 is set by two input terminals, GAIN0 and GAIN1.
The gains listed in Table 1 are realized by changing the taps on the input resistors and feedback resistors inside
the amplifier. This causes the input impedance (ZI) to be dependent on the gain setting. The actual gain settings
are controlled by ratios of resistors, so the gain variation from part to part is small. However, the input impedance
from part to part at the same gain may shift by ±20% due to shifts in the actual resistance of the input resistors.
For design purposes, the input network (discussed in the next section) should be designed assuming an input
impedance of 12.8 k
, which is the absolute minimum input impedance of the TPA3100D2. At the lower gain
settings, the input impedance could increase as high as 38.4 k
Table 1. Gain Setting
AMPLIFIER GAIN
INPUT IMPEDANCE
(dB)
(k
)
GAIN1
GAIN0
TYP
0
20
32
0
1
26
16
1
0
32
16
1
36
16
Copyright 2008, Texas Instruments Incorporated
21
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TPA3100D2PHP 功能描述:音頻放大器 20 W Stereo 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
TPA3100D2PHPG4 功能描述:音頻放大器 20 W Stereo 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
TPA3100D2PHPR 功能描述:音頻放大器 20 W Stereo 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
TPA3100D2PHPRG4 功能描述:音頻放大器 20 W Stereo 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
TPA3100D2-Q1 制造商:TI 制造商全稱:Texas Instruments 功能描述:20-W STEREO CLASS-D AUDIO POWER AMPLIFIER