參數(shù)資料
    

    


    


    
型號(hào)：
MAX9254

    

    
廠商：
Maxim Integrated Products, Inc.

    

    
英文描述：
21-Bit Deserializers with Programmable Spread Spectrum and DC Balance

    

    
中文描述：
21位解串器，提供可編程頻譜擴(kuò)展和直流平衡

    

    
文件頁(yè)數(shù)：
16/22頁(yè)

    

    
文件大?。?/td>
306K

    

    
代理商：
MAX9254


    

    

    

	
    
    
    

    
    
	
    M
    21-Bit Deserializers with Programmable
    Spread Spectrum and DC Balance
    16
    ______________________________________________________________________________________
    DC-coupled link (2.4V - 1.425V = 0.975V and 1.075V -
    0V = 1.075V). Common-mode voltage differences may
    be due to ground potential variation or common-mode
    noise. If there is more than 
    ±
    1V of difference, the receiver
    is not guaranteed to read the input signal correctly and
    may cause bit errors. AC-coupling filters low-frequency
    ground shifts and common-mode noise and passes
    high-frequency data. A common-mode voltage differ-
    ence up to the voltage rating of the coupling capacitor
    (minus half the differential swing) is tolerated. DC-bal-
    anced coding of the data is required to maintain the
    differential signal amplitude and limit jitter on an
    AC-coupled link. A capacitor in series with each output
    of the LVDS driver is sufficient for AC-coupling. However,
    two capacitors—one at the serializer output and one at
    the deserializer input—provide protection in case either
    end of the cable is shorted to a high voltage.
    Applications Information
    Selection of AC-Coupling Capacitors
    Voltage droop and the DSV of transmitted symbols
    cause signal transitions to start from different voltage
    levels. Because the transition time is finite, starting the
    signal transition from different voltage levels causes
    timing jitter. The time constant for an AC-coupled link
    needs to be chosen to reduce droop and jitter to an
    acceptable level.
    The RC network for an AC-coupled link consists of the
    LVDS receiver termination resistor (R
    T
    ), the LVDS driver
    output resistor (R
    O
    ), and the series AC-coupling capac-
    itors (C). The RC time constant for two equal-value
    series capacitors is (C x (R
    T 
    + R
    O
    )) / 2 (Figure 19). The
    RC time constant for four equal-value series capacitors
    is (C x (R
    T 
    + R
    O
    )) / 4 (Figure 20).
    RPLLS (65,600 x RCIP)
    LOW
    LOW
    RxCLKOUT
    INTERNAL
    PLL1 LOCK
    INTERNAL
    SSPLL LOCK
    RxOUT_
    LOW
    LOW
    Figure 16. Output Waveforms when PLL1 Loses Lock and Locks Again
    RPLLS2 (32,800 x RCIP)
    LOW
    INTERNAL
    SSPLL LOCK
    RxCLKOUT
    RxOUT_
    TIMING SHOWN FOR STABLE CLOCK AND DATA INPUTS 
    Figure 17. Output Waveforms if Spread-Spectrum PLL Loses Lock and Locks Again
    
    
    
    
    
    


    


    

    相關(guān)PDF資料
    		

    PDF描述
    		

    
    

    
MAX9254EUM
21-Bit Deserializers with Programmable Spread Spectrum and DC Balance

    

    
MAX9246
21-Bit Deserializers with Programmable Spread Spectrum and DC Balance

    

    
MAX9244
21-Bit Deserializers with Programmable Spread Spectrum and DC Balance

    

    
MAX9310
1:5 Clock Driver with Selectable LVPECL Inputs and LVDS Outputs

    

    
MAX9377
Anything-to-LVPECL/LVDS Translators with Pin-Selectable Divide-by-Four

    

    

    

    


    


    

    相關(guān)代理商/技術(shù)參數(shù)
    		

    參數(shù)描述
    		

    
    

    
MAX9254EUM
 制造商:MAXIM 制造商全稱:Maxim Integrated Products 功能描述:21-Bit Deserializers with Programmable Spread Spectrum and DC Balance

    

    
MAX9254EUM/V+
功能描述:串行器/解串器 - Serdes 21-Bit DC-Balanced Deserializer RoHS:否 制造商:Texas Instruments 類型:Deserializer 數(shù)據(jù)速率:1.485 Gbit/s 輸入類型:ECL/LVDS 輸出類型:LVCMOS 輸入端數(shù)量:1 輸出端數(shù)量:20 工作電源電壓:2.375 V to 2.625 V 工作溫度范圍:0 C to + 70 C 封裝 / 箱體:TQFP-64

    

    
MAX9254EUM/V+T
功能描述:串行器/解串器 - Serdes 21-Bit DC-Balanced Deserializer RoHS:否 制造商:Texas Instruments 類型:Deserializer 數(shù)據(jù)速率:1.485 Gbit/s 輸入類型:ECL/LVDS 輸出類型:LVCMOS 輸入端數(shù)量:1 輸出端數(shù)量:20 工作電源電壓:2.375 V to 2.625 V 工作溫度范圍:0 C to + 70 C 封裝 / 箱體:TQFP-64

    

    
MAX9254EUM+
功能描述:串行器/解串器 - Serdes 21-Bit DC-Balanced Deserializer RoHS:否 制造商:Texas Instruments 類型:Deserializer 數(shù)據(jù)速率:1.485 Gbit/s 輸入類型:ECL/LVDS 輸出類型:LVCMOS 輸入端數(shù)量:1 輸出端數(shù)量:20 工作電源電壓:2.375 V to 2.625 V 工作溫度范圍:0 C to + 70 C 封裝 / 箱體:TQFP-64

    

    
MAX9254EUM+D
功能描述:串行器/解串器 - Serdes 21-Bit DC-Balanced Deserializer RoHS:否 制造商:Texas Instruments 類型:Deserializer 數(shù)據(jù)速率:1.485 Gbit/s 輸入類型:ECL/LVDS 輸出類型:LVCMOS 輸入端數(shù)量:1 輸出端數(shù)量:20 工作電源電壓:2.375 V to 2.625 V 工作溫度范圍:0 C to + 70 C 封裝 / 箱體:TQFP-64

    

    
    
    
    
	
    	
    
    
     
     
    發(fā)布緊急采購(gòu)，3分鐘左右您將得到回復(fù)。
    
 
     
    

   	  
    
     

    
                    			    				      
    
                
    
                  
    
                    
                    
    
                      
    
                      
                      
    采購(gòu)需求
      (若只采購(gòu)一條型號(hào)，填寫一行即可)
    
                      
                      
    發(fā)布成功！您可以繼續(xù)發(fā)布采購(gòu)。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)
    
                      
                      
    發(fā)布成功！您可以繼續(xù)發(fā)布采購(gòu)。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)
    
                       
                        
    
                                
                                
    
                                    *型號(hào)
                                    *數(shù)量
                                    廠商
                                    批號(hào)
                                    封裝
                                  
    
                                    
                                
                                
    
                                    
                                        
    
                                            
                                            
                                        
    
                                        		
                                     
                                    
                                        
    
                                        		
                                    
                                        
    
                                        		
                                    
                                        
    
                                        		
                                    
                                        
    
                                        		
                                  
    
                                  
                                   
                                    
                            
    
                             
                             
							                            
    
                          添加更多采購(gòu)
    
                      
    
                      
                      
    
                      
                      
    我的聯(lián)系方式
    
                     
                     
                       
    
                                
                                
                                
    
                                    
                                         *
                                    
                                    
                                  
    
                                  
                                  
    
                                    
                                         *
                                    
                                    
                                  
    
                                  
                                  
    
                                    
                                        
                                    
                                    
                                  
    
                                  
                                  
    
                                    
                                         *