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NTP8230 参数 Datasheet PDF下载

NTP8230图片预览
型号: NTP8230
PDF下载: 下载PDF文件 查看货源
内容描述: 应用范围: 1.PDP电视还是液晶电视, 2.dockingstation , 3.Mini分量音频解决方案。>数据表: 2 CH立体声( 30W ×2 @ 28V , 8Ω )> 2.1声道( 10W ×2 + 25W @ 24V , 8Ω )>联系电话: 18928487876>宽工作电源电压范围>( 7V至28V )> 3D环绕 [Applications:1.PDP TV or LCD TV,2.dockingstation,3.Mini-Component-Audio Solution. datasheet:2 CH Stereo (30W x 2 @28V,8Ω)  2.1 channel (10W x 2 + 25W @24V,8Ω) tel:18928487876  Wide Operating Supply Voltage Range (7V to 28V)  3D surround ]
分类和应用: 电视光电二极管电话
文件页数/大小: 55 页 / 1767 K
品牌: ETC [ ETC ]
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Power Driver Integrated Full Digital Audio Amplifier  
NTP-8230  
8. MIXER  
Channel mixer can be used in lots of application needs like pseudo stereo and etc. User can mix input  
channels into each output channels with designated gains and polarity. Step size of mixer gain is  
variable according to the gain level as shown below.  
Volume Range (dB)  
+18 ~ +6  
Step (dB)  
1
0.5  
1
+5.5 ~ -5.5  
-6 ~ -32  
≤ 32  
-∞  
Table 3. Variable step mixing gain  
In total, 6 mixing gain coefficients denoted as M[0x03], M[0x04], M[0x05], … M[0x08] are defined as  
shown in the equation below. Each Mxx stores volume value in dB scale, and the number values  
versus gain in dB are shown in the Appendix C. There are some places in the mixing matrix that are  
considered as trivial connections and thus predefined as -∞ dB.  
[Output Channels] = [Mixer Matrix] x [Input Channels]  
CH1 OUT  
CH2 OUT  
CH3 OUT  
M[0x03] M[0x04]  
M[0x05] M[0x06]  
M[0x07] M[0x08]  
CH1 IN  
CH2 IN  
.
=
Figure 12. Mixer Matrix  
In order to load mixer coefficients into internal memory, send the index value in the gain value table to  
the register address 0x03~ 0x08.  
Copyright NeoFidelity, Inc.  
Page 17  
Document Number: DS8230 draft ver. 0.1  
2011-01-11  
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