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    參數(shù)資料
    

    


    


    
型號(hào)：
AD7946BRMRL7

    

    
廠商：
ANALOG DEVICES INC

    

    
元件分類：
ADC

    

    
英文描述：
14-Bit, 500 kSPS PulSAR⑩ ADC in MSOP/QFN

    

    
中文描述：
1-CH 14-BIT SUCCESSIVE APPROXIMATION ADC, SERIAL ACCESS, PDSO10

    

    
封裝：
MO-187-BA, MSOP-10

    

    
文件頁(yè)數(shù)：
13/27頁(yè)

    

    
文件大?。?/td>
301K

    

    
代理商：
AD7946BRMRL7


    

    

    

	
    
    
    

    
    
	
    AD7946
    Preliminary Technical Data
    Rev Pr D | Page 20 of 27
    CS Mode 4-Wire, No BUSY Indicator
    This mode is usually used when multiple AD7946s are
    connected to an SPI compatible digital host.
    A connection diagram example using two AD7946s is shown in
    Figure 33 and the corresponding timing is given in Figure 34.
    With SDI high, a rising edge on CNV initiates a conversion,
    selects the CS mode, and forces SDO to high impedance. In this
    mode, CNV must be held high during the conversion phase and
    the subsequent data readback (if SDI and CNV are low, SDO is
    driven low). Prior to the minimum conversion time, SDI could
    be used to select other SPI devices, such as analog multiplexers,
    but SDI must be returned high before the minimum conversion
    time and held high until the maximum conversion time to
    avoid the generation of the BUSY signal indicator. When the
    conversion is complete, the AD7946 enters the acquisition
    phase and powers down. Each ADC result can be read by
    bringing low its SDI input which consequently outputs the MSB
    onto SDO. The remaining data bits are then clocked by
    subsequent SCK driving edges. The data is valid on both SCK
    edges. Although the nondriving edge can be used to capture the
    data, a digital host also using the SCK falling edge will allow a
    faster reading rate provided it has an acceptable hold time. After
    the 14th SCK falling edge, or when SDI goes high, whichever is
    earlier, SDO returns to high impedance and another AD7946
    can be read.
    CNV
    SCK
    SDO
    SDI
    DATA IN
    CLK
    CS1
    CONVERT
    CS2
    DIGITAL HOST
    AD7946
    CNV
    SCK
    SDO
    SDI
    AD7946
    Figure 33. CS Mode 4-Wire, No BUSY Indicator Connection Diagram
    04656-P
    rC-012
    SDO
    D13
    D12
    D11
    D1
    D0
    tDIS
    SCK
    12
    3
    26
    27
    28
    tHSDO
    tDSDO
    tEN
    CONVERSION
    ACQUISITION
    tCONV
    tCYC
    tACQ
    ACQUISITION
    SDI(CS1)
    CNV
    tSSDICNV
    tHSDICNV
    D1
    12
    13
    tSCK
    tSCKL
    tSCKH
    D0
    D13
    D12
    15
    16
    14
    SDI(CS2)
    Figure 34. CS Mode 4-Wire, No BUSY Indicator Serial Interface Timing
    
    
    
    
    
    


    


    

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AD7946BRM-RL7
 制造商:Analog Devices 功能描述:ADC Single SAR 500ksps 14-bit Serial 10-Pin MSOP T/R

    

    
AD7946BRMZ
功能描述:IC ADC 14BIT 500KSPS SAR 10-MSOP RoHS:是 類別:集成電路 (IC) >> 數(shù)據(jù)采集 - 模數(shù)轉(zhuǎn)換器 系列:PulSAR® 其它有關(guān)文件:TSA1204 View All Specifications 標(biāo)準(zhǔn)包裝:1 系列:- 位數(shù):12 采樣率（每秒）:20M 數(shù)據(jù)接口:并聯(lián) 轉(zhuǎn)換器數(shù)目:2 功率耗散（最大）:155mW 電壓電源:模擬和數(shù)字 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:48-TQFP 供應(yīng)商設(shè)備封裝:48-TQFP（7x7） 包裝:Digi-Reel® 輸入數(shù)目和類型:4 個(gè)單端，單極；2 個(gè)差分，單極 產(chǎn)品目錄頁(yè)面:1156 (CN2011-ZH PDF) 其它名稱:497-5435-6

    

    
AD7946BRMZRL7
功能描述:IC ADC 14BIT 500KSPS 10-MSOP RoHS:是 類別:集成電路 (IC) >> 數(shù)據(jù)采集 - 模數(shù)轉(zhuǎn)換器 系列:PulSAR® 標(biāo)準(zhǔn)包裝:1,000 系列:- 位數(shù):12 采樣率（每秒）:300k 數(shù)據(jù)接口:并聯(lián) 轉(zhuǎn)換器數(shù)目:1 功率耗散（最大）:75mW 電壓電源:單電源 工作溫度:0°C ~ 70°C 安裝類型:表面貼裝 封裝/外殼:24-SOIC（0.295"，7.50mm 寬） 供應(yīng)商設(shè)備封裝:24-SOIC 包裝:帶卷 (TR) 輸入數(shù)目和類型:1 個(gè)單端，單極；1 個(gè)單端，雙極

    

    
AD7947
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