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UTC571 参数 Datasheet PDF下载

UTC571图片预览
型号: UTC571
PDF下载: 下载PDF文件 查看货源
内容描述: COMPANDER完整的压缩机和扩张器于一体的Internet控制 [COMPANDER Complete compressor and expandor in one IChip]
分类和应用:
文件页数/大小: 14 页 / 152 K
品牌: UTC [ Unisonic Technologies ]
 浏览型号UTC571的Datasheet PDF文件第6页浏览型号UTC571的Datasheet PDF文件第7页浏览型号UTC571的Datasheet PDF文件第8页浏览型号UTC571的Datasheet PDF文件第9页浏览型号UTC571的Datasheet PDF文件第10页浏览型号UTC571的Datasheet PDF文件第11页浏览型号UTC571的Datasheet PDF文件第13页浏览型号UTC571的Datasheet PDF文件第14页  
UTC571  
LINEAR INTEGRATED CIRCUIT  
+20  
0
MAXIMUM  
SIGNAL LEVEL  
-20  
-40  
-60  
-80  
-100  
90dB  
110dB  
NOISE IN  
20kHz BW  
-40  
-20  
0
VCA GAIN (0dB)  
Figure 12. Dynamic Range of UTC571  
Figure 12 shows the noise performance of the DG cell. The maximum output level before clipping occurs in the  
gain cell is plotted along with the output noise in a 20kHz bandwidth. Note that the noise drops as the gain is  
reduced for the first 20dB of gain reduction. At high gains, the signal to noise ratio is 90dB, and the total dynamic  
range from maximum signal to minimum noise is 110dB.  
Control signal feedthrough is generated in the gain cell by imperfect device matching and mismatches in the  
current sources, I 1 and I 2 . When no input signal is present, changing I G will cause a small output signal. The  
distortion trim is effective in nulling out any control signal feedthrough, but in general, the null for minimum  
feedthrough will be different than the null in distortion. The control signal feedthrough can be trimmed  
independently of distortion by tying a current source to the DG input pin. This effectively trims I . Figure 17 shows  
such a trim network.  
Vcc  
R-SELECT FOR  
3.6V  
470k  
100k  
TO PIN 3 OR 14  
Figure 13. control Signal Feedthrough  
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YOUW ANG ELECTRONICS CO.LTD