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    參數(shù)資料
    

    


    


    
型號(hào)：
AD7710

    

    
廠商：
Analog Devices, Inc.

    

    
英文描述：
Signal Conditioning ADC(LC2MOS信號(hào)調(diào)節(jié)A/D轉(zhuǎn)換器)

    

    
中文描述：
信號(hào)調(diào)理模數(shù)轉(zhuǎn)換器（LC2MOS信號(hào)調(diào)節(jié)的A / D轉(zhuǎn)換器）

    

    
文件頁(yè)數(shù)：
24/28頁(yè)

    

    
文件大?。?/td>
236K

    

    
代理商：
AD7710


    

    

    

	
    
    
    

    
    
	
    REV. E
    –24–
    AD7710
    SIMPLIFYING THE EXTERNAL CLOCKING MODE
    INTERFACE
    In many applications, the user may not require the facility of
    writing to the on-chip calibration registers. In this case, the
    serial interface to the AD7710 in external clocking mode can be
    simplified by connecting the 
    TFS
     line to the A0 input of the
    AD7710 (see Figure 14). This means that any write to the de-
    vice will load data to the control register (since A0 is low while
    TFS
     is low) and any read to the device will access data from the
    output data register or from the calibration registers (since A0 is
    high while 
    RFS
     is low). It should be noted that in this arrange-
    ment the user does not have the capability of reading from the
    control register.
    AD7710
    SDATA
    SCLK
    TFS
    A0
    FOUR
    INTERFACE
    LINES
    RFS
    Figure 14. Simplified Interface with 
    TFS
     Connected to A0
    Another method of simplifying the interface is to generate the
    TFS
     signal from an inverted 
    RFS
     signal. However, generating
    the signals the opposite way around (
    RFS
     from an inverted
    TFS
    ) will cause writing errors.
    MICROCOMPUTER/MICROPROCESSOR INTERFACING
    The AD7710’s flexible serial interface allows for easy interface
    to most microcomputers and microprocessors. Figure 15 shows
    a flowchart diagram for a typical programming sequence for
    reading data from the AD7710 to a microcomputer while Figure
    16 shows a flowchart diagram for writing data to the AD7710.
    Figures 17, 18 and 19 show some typical interface circuits.
    The flowchart of Figure 15 is for continuous read operations
    from the AD7710 output register. In the example shown, the
    DRDY
     line is continuously polled. Depending on the micro-
    processor configuration, the 
    DRDY
     line may come to an inter-
    rupt input in which case the 
    DRDY
     will automatically generate
    an interrupt without being polled. The reading of the serial
    buffer could be anything from one read operation up to three
    read operations (where 24 bits of data are read into an 8-bit
    serial register). A read operation to the control/calibration regis-
    ters is similar but in this case the status of 
    DRDY
     can be
    ignored. The A0 line is brought low when the 
    RFS
     line is
    brought low when reading from the control register.
    The flowchart also shows the bits being reversed after they have
    been read in from the serial port. This depends on whether the
    microprocessor expects the MSB of the word first or the LSB of
    the word first. The AD7710 outputs the MSB first.
    The flowchart for Figure 16 is for a single 24-bit write operation
    to the AD7710 control or calibration registers. This shows data
    being transferred from data memory to the accumulator before
    being written to the serial buffer. Some microprocessor systems
    will allow data to be written directly to the serial buffer from
    data memory. The writing of data to the serial buffer from the
    accumulator will generally consist of either two or three write
    operations, depending on the size of the serial buffer.
    NO
    YES
    BRING
    RFS LOW
    x3
    REVERSE
    ORDER OF BITS
    BRING
    RFS HIGH
    POLL DRDY
    CONFIGURE &
    INITIALIZE 
    m
    C/
    m
    P
    SERIAL PORT
    DRDY
    LOW
    BRING
    RFS, TFS HIGH
    START
    READ
    SERIAL BUFFER
    Figure 15. Flowchart for Continuous Read Operations to
    the AD7710
    The flowchart also shows the option of the bits being reversed
    before being written to the serial buffer. This depends on
    whether the first bit transmitted by the microprocessor is the
    MSB or the LSB. The AD7710 expects the MSB as the first bit
    in the data stream. In cases where the data is being read or
    being written in bytes and the data has to be reversed, the bits
    will have to be reversed for every byte.
    
    
    
    
    
    


    


    

    相關(guān)PDF資料
    		

    PDF描述
    		

    
    

    
AD7711AAR
LC2MOS Signal Conditioning ADC with RTD Current Source

    

    
AD7711ASQ
LC2MOS Signal Conditioning ADC with RTD Current Source

    

    
AD7711A*
LC2MOS Signal Conditioning ADC with RTD Current Source

    

    
AD7711AN
LC2MOS Signal Conditioning ADC with RTD Excitation Currents

    

    
AD7711AQ
LC2MOS Signal Conditioning ADC with RTD Excitation Currents

    

    

    

    


    


    

    相關(guān)代理商/技術(shù)參數(shù)
    		

    參數(shù)描述
    		

    
    

    
AD7710AN
功能描述:IC ADC SIGNAL CONDITIONING 24DIP RoHS:否 類別:集成電路 (IC) >> 數(shù)據(jù)采集 - 模數(shù)轉(zhuǎn)換器 系列:- 標(biāo)準(zhǔn)包裝:1 系列:- 位數(shù):14 采樣率（每秒）:83k 數(shù)據(jù)接口:串行，并聯(lián) 轉(zhuǎn)換器數(shù)目:1 功率耗散（最大）:95mW 電壓電源:雙 ± 工作溫度:0°C ~ 70°C 安裝類型:通孔 封裝/外殼:28-DIP（0.600"，15.24mm） 供應(yīng)商設(shè)備封裝:28-PDIP 包裝:管件 輸入數(shù)目和類型:1 個(gè)單端，雙極

    

    
AD7710ANZ
功能描述:IC ADC SIGNAL CONDITIONING 24DIP RoHS:是 類別:集成電路 (IC) >> 數(shù)據(jù)采集 - 模數(shù)轉(zhuǎn)換器 系列:- 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

    

    
AD7710AQ
功能描述:IC ADC 24BIT DIFF INP 24-CDIP RoHS:否 類別:集成電路 (IC) >> 數(shù)據(jù)采集 - 模數(shù)轉(zhuǎn)換器 系列:- 標(biāo)準(zhǔn)包裝:1 系列:- 位數(shù):14 采樣率（每秒）:83k 數(shù)據(jù)接口:串行，并聯(lián) 轉(zhuǎn)換器數(shù)目:1 功率耗散（最大）:95mW 電壓電源:雙 ± 工作溫度:0°C ~ 70°C 安裝類型:通孔 封裝/外殼:28-DIP（0.600"，15.24mm） 供應(yīng)商設(shè)備封裝:28-PDIP 包裝:管件 輸入數(shù)目和類型:1 個(gè)單端，雙極

    

    
AD7710AR
功能描述:IC ADC 24BIT DIFF INP 24-SOIC RoHS:否 類別:集成電路 (IC) >> 數(shù)據(jù)采集 - 模數(shù)轉(zhuǎn)換器 系列:- 標(biāo)準(zhǔn)包裝:1 系列:- 位數(shù):14 采樣率（每秒）:83k 數(shù)據(jù)接口:串行，并聯(lián) 轉(zhuǎn)換器數(shù)目:1 功率耗散（最大）:95mW 電壓電源:雙 ± 工作溫度:0°C ~ 70°C 安裝類型:通孔 封裝/外殼:28-DIP（0.600"，15.24mm） 供應(yīng)商設(shè)備封裝:28-PDIP 包裝:管件 輸入數(shù)目和類型:1 個(gè)單端，雙極

    

    
    
    
    
	
    	
    
    
     
     
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