<code id="gubyp"></code>
    • <code id="gubyp"><input id="gubyp"></input></code>
            


    
    



    

    
  
    
    
    
    
  
    
  
  

    





    


    
 
 




 
 


    

    
    


    參數(shù)資料
    

    


    


    
型號(hào)：
AD9715BCPZ

    

    
廠商：
Analog Devices Inc

    

    
文件頁(yè)數(shù)：
39/80頁(yè)

    

    
文件大?。?/td>
0K

    

    
描述：
IC DAC DUAL 10BIT LO PWR 40LFCSP

    

    
產(chǎn)品培訓(xùn)模塊：
Data Converter Fundamentals
    
	DAC Architectures
    		

    

    
標(biāo)準(zhǔn)包裝：
1

    

    
系列：
TxDAC®

    

    
位數(shù)：
10
    		

    

    
數(shù)據(jù)接口：
串行
    		

    

    
轉(zhuǎn)換器數(shù)目：
2
    		

    

    
電壓電源：
模擬和數(shù)字
    		

    

    
功率耗散（最大）：
86mW
    		

    

    
工作溫度：
-40°C ~ 85°C
    		

    

    
安裝類型：
表面貼裝
    		

    

    
封裝/外殼：
40-VFQFN 裸露焊盤，CSP
    		

    

    
供應(yīng)商設(shè)備封裝：
40-LFCSP-VQ（6x6）
    		

    

    
包裝：
托盤
    		

    

    
輸出數(shù)目和類型：
4 電流，單極
    		

    

    
采樣率（每秒）：
125M
    		

    

    
產(chǎn)品目錄頁(yè)面：
785 (CN2011-ZH PDF)
    		

    

    

    

	
    
    
    

    
    
	
    AD9714/AD9715/AD9716/AD9717
    Rev. A | Page 44 of 80
    DAC TRANSFER FUNCTION
    The AD9714/AD9715/AD9716/AD9717 provide two differen-
    tial current outputs, IOUTP/IOUTN and QOUTP/QOUTN.
    IOUTP and QOUTP provide a near full-scale current output,
    IxOUTFS, when all bits are high (that is, DAC CODE = 2N  1,
    where N = 8, 10, 12, or 14 for the AD9714, AD9715, AD9716,
    and AD9717, respectively), while IOUTN and QOUTN, the
    complementary outputs, provide no current. The current
    outputs appearing at the positive DAC outputs, IOUTP and
    QOUTP, and at the negative DAC outputs, IOUTN and QOUTN,
    are a function of both the input code and IxOUTFS and can be
    expressed as follows:
    IOUTP = (IDAC CODE/2N) × IIOUTFS
    (1)
    QOUTP = (QDAC CODE/2N) × IQOUTFS
    IOUTN = ((2N  1)  IDAC CODE)/2N × IIOUTFS
    (2)
    QOUTN = ((2N  1)  QDAC CODE)/2N × IQOUTFS
    where:
    IDAC CODE and QDAC CODE = 0 to 2N  1 (that is, decimal
    representation).
    IIOUTFS and IQOUTFS are functions of the reference currents, IIREF
    and IQREF, respectively, which are nominally set by a reference
    voltage, VREFIO, and external resistors, IRSET and QRSET, respec-
    tively. IIOUTFS and IQOUTFS can be expressed as follows:
    IIOUTFS = 32 × IIREF
    (3)
    IQOUTFS = 32 × IQREF
    where:
    IIREF = VREFIO/IRSET
    (4)
    IQREF = VREFIO/QRSET
    or
    IIOUTFS = 32 × VREFIO/IRSET
    (5)
    IQOUTFS = 32 × VREFIO/QRSET
    A differential pair (IOUTP/IOUTN or QOUTP/QOUTN)
    typically drives a resistive load directly or via a transformer. If
    dc coupling is required, the differential pair (IOUTP/IOUTN or
    QOUTP/QOUTN) should be connected to matching resistive
    loads, xRLOAD, that are tied to analog common, AVSS. The
    single-ended voltage output appearing at the positive and
    negative nodes is
    VIOUTP = IOUTP × IRLOAD
    (6)
    VQOUTP = QOUTP × QRLOAD
    VIOUTN = IOUTN × IRLOAD
    (7)
    VQOUTN = QOUTN × QRLOAD
    To achieve the maximum output compliance of 1 V at the
    nominal 4 mA output current, IRLOAD = QRLOAD must be set
    to 250 Ω.
    Substituting the values of IOUTP, IOUTN, and IxREF, VIDIFF can
    be expressed as
    VIDIFF = {(2 × IDAC CODE – (2N  1))/2N} ×
    (8)
    (32 × VREFIO/IRSET) × IRLOAD
    Equation 8 highlights some of the advantages of operating the
    AD9714/AD9715/AD9716/AD9717 differentially. First, the
    differential operation helps cancel common-mode error sources
    associated with IOUTP and IOUTN, such as noise, distortion,
    and dc offsets. Second, the differential code-dependent current and
    subsequent voltage, VIDIFF, is twice the value of the single-ended
    voltage output (that is, VIOUTP or VIOUTN), thus providing twice
    the signal power to the load. Note that the gain drift temperature
    performance for a single-ended output (VIOUTP and VIOUTN) or
    differential output (VIDIFF) of the AD9714/AD9715/AD9716/
    AD9717 can be enhanced by selecting temperature-tracking
    resistors for xRLOAD and xRSET because of their ratiometric
    relationship, as shown in Equation 8.
    ANALOG OUTPUT
    The complementary current outputs in each DAC, IOUTP/
    IOUTN and QOUTP/QOUTN, can be configured for single-
    ended or differential operation. IOUTP/IOUTN and QOUTP/
    QOUTN can be converted into complementary single-ended
    voltage outputs, VIOUTP and VIOUTN, as well as VQOUTP and VQOUTN
    via a load resistor, xRLOAD, as described in the DAC Transfer
    Function section by Equation 6 through Equation 8. The differen-
    tial voltages, VIDIFF and VQDIFF, existing between VIOUTP and VIOUTN,
    and VQOUTP and VQOUTN, can also be converted to a single-ended
    voltage via a transformer or a differential amplifier configuration.
    The ac performance of the AD9714/AD9715/AD9716/AD9717
    is optimum and is specified using a differential transformer-
    coupled output in which the voltage swing at IOUTP and IOUTN
    is limited to ±0.5 V. The distortion and noise performance of
    the AD9714/AD9715/AD9716/AD9717 can be enhanced when
    it is configured for differential operation. The common-mode
    error sources of both IOUTP/IOUTN and QOUTP/QOUTN
    can be significantly reduced by the common-mode rejection
    of a transformer or differential amplifier. These common-mode
    error sources include even-order distortion products and noise.
    The enhancement in distortion performance becomes more
    significant as the frequency content of the reconstructed wave-
    form increases and/or its amplitude increases. This is due to
    the first-order cancellation of various dynamic common-mode
    distortion mechanisms, digital feedthrough, and noise. Performing
    a differential-to-single-ended conversion via a transformer also
    provides the ability to deliver twice the reconstructed signal
    power to the load (assuming no source termination). Because
    the output currents of IOUTP/IOUTN and QOUTP/QOUTN
    are complementary, they become additive when processed
    differentially.
    
    
    
    
    
    


    


    

    相關(guān)PDF資料
    		

    PDF描述
    		

    
    

    
AD9726BSVZRL
IC DAC 16IT LVDS 400MSPS 80-TQFP

    

    
AD9736BBC
IC DAC 14BIT 1.2GSPS 160CSPBGA

    

    
AD9737ABBCZ
IC DAC 11BIT 2.5GSPS RF 160BGA

    

    
AD9740ARU
IC DAC 10BIT 210MSPS 28-TSSOP

    

    
AD9742ACPZ
IC DAC 12BIT 210MSPS 32LFCSP

    

    

    

    


    


    

    相關(guān)代理商/技術(shù)參數(shù)
    		

    參數(shù)描述
    		

    
    

    
AD9715BCPZRL7
功能描述:IC DAC DUAL 10BIT LO PWR 40LFCSP RoHS:是 類別:集成電路 (IC) >> 數(shù)據(jù)采集 - 數(shù)模轉(zhuǎn)換器 系列:TxDAC® 標(biāo)準(zhǔn)包裝:47 系列:- 設(shè)置時(shí)間:2µs 位數(shù):14 數(shù)據(jù)接口:并聯(lián) 轉(zhuǎn)換器數(shù)目:1 電壓電源:單電源 功率耗散（最大）:55µW 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:28-SSOP（0.209"，5.30mm 寬） 供應(yīng)商設(shè)備封裝:28-SSOP 包裝:管件 輸出數(shù)目和類型:1 電流，單極；1 電流，雙極 采樣率（每秒）:*

    

    
AD9715-DPG2-EBZ
功能描述:ADC 12BIT DUAL 40LFCSP RoHS:是 類別:編程器，開(kāi)發(fā)系統(tǒng) >> 評(píng)估板 - 數(shù)模轉(zhuǎn)換器 (DAC) 系列:TxDAC® 產(chǎn)品培訓(xùn)模塊:Lead (SnPb) Finish for COTS
	Obsolescence Mitigation Program 標(biāo)準(zhǔn)包裝:1 系列:- DAC 的數(shù)量:4 位數(shù):12 采樣率（每秒）:- 數(shù)據(jù)接口:串行，SPI? 設(shè)置時(shí)間:3µs DAC 型:電流/電壓 工作溫度:-40°C ~ 85°C 已供物品:板 已用 IC / 零件:MAX5581

    

    
AD9715-EBZ
 制造商:Analog Devices 功能描述:DUAL 10 BIT LOW POWER CONVERTER - Boxed Product (Development Kits)

    

    
AD9716
 制造商:AD 制造商全稱:Analog Devices 功能描述:Dual, 8-/10-/12-/14-Bit Low Power Digital-to-Analog Converters

    

    
AD9716BCPZ
功能描述:IC DAC DUAL 12BIT LO PWR 40LFCSP RoHS:是 類別:集成電路 (IC) >> 數(shù)據(jù)采集 - 數(shù)模轉(zhuǎn)換器 系列:TxDAC® 標(biāo)準(zhǔn)包裝:1 系列:- 設(shè)置時(shí)間:4.5µs 位數(shù):12 數(shù)據(jù)接口:串行，SPI? 轉(zhuǎn)換器數(shù)目:1 電壓電源:單電源 功率耗散（最大）:- 工作溫度:-40°C ~ 125°C 安裝類型:表面貼裝 封裝/外殼:8-SOIC（0.154"，3.90mm 寬） 供應(yīng)商設(shè)備封裝:8-SOICN 包裝:剪切帶 (CT) 輸出數(shù)目和類型:1 電壓，單極；1 電壓，雙極 采樣率（每秒）:* 其它名稱:MCP4921T-E/SNCTMCP4921T-E/SNRCTMCP4921T-E/SNRCT-ND

    

    
    
    
    
	
    	
    
    
     
     
    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
    
                     
                     
                       
    
                                
                                
                                
    
                                    
                                         *
                                    
                                    
                                  
    
                                  
                                  
    
                                    
                                         *
                                    
                                    
                                  
    
                                  
                                  
    
                                    
                                        
                                    
                                    
                                  
    
                                  
                                  
    
                                    
                                         *