參數(shù)資料
型號(hào): TPA2016D2RTJR
廠商: Texas Instruments
文件頁(yè)數(shù): 8/39頁(yè)
文件大小: 0K
描述: IC AMP AUDIO PWR 2.8W D 20QFN
標(biāo)準(zhǔn)包裝: 1
類(lèi)型: D 類(lèi)
輸出類(lèi)型: 2 通道(立體聲)
在某負(fù)載時(shí)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(diǎn): 差分輸入,I²C,短路和熱保護(hù),關(guān)機(jī),音量控制
安裝類(lèi)型: 表面貼裝
供應(yīng)商設(shè)備封裝: 20-QFN 裸露焊盤(pán)(4x4)
封裝/外殼: 20-WFQFN 裸露焊盤(pán)
包裝: 標(biāo)準(zhǔn)包裝
產(chǎn)品目錄頁(yè)面: 876 (CN2011-ZH PDF)
其它名稱(chēng): 296-25430-6
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
SLOS524D – JUNE 2008 – REVISED AUGUST 2009........................................................................................................................................................ www.ti.com
Figure 31. 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 TPA2016D2 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 32. 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 33 illustrates the effects.
16
Copyright 2008–2009, Texas Instruments Incorporated
Product Folder Link(s): TPA2016D2
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