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    參數(shù)資料
    

    


    


    
型號(hào)：
LTC2488IDE#TRPBF

    

    
廠商：
Linear Technology

    

    
文件頁數(shù)：
5/30頁

    

    
文件大小：
0K

    

    
描述：
IC ADC 16BIT DELTA SIG 14-DFN

    

    
標(biāo)準(zhǔn)包裝：
2,500

    

    
位數(shù)：
16
    		

    

    
采樣率（每秒）：
6.9
    		

    

    
數(shù)據(jù)接口：
MICROWIRE?，串行，SPI?
    		

    

    
轉(zhuǎn)換器數(shù)目：
1
    		

    

    
功率耗散（最大）：
800µW
    		

    

    
電壓電源：
單電源
    		

    

    
工作溫度：
-40°C ~ 85°C
    		

    

    
安裝類型：
表面貼裝
    		

    

    
封裝/外殼：
14-WFDFN 裸露焊盤
    		

    

    
供應(yīng)商設(shè)備封裝：
14-DFN-EP（4x3）
    		

    

    
包裝：
帶卷 (TR)
    		

    

    
輸入數(shù)目和類型：
4 個(gè)單端，雙極；2 個(gè)差分，雙極
    		

    

    
配用：
DC1009A-B-ND - BOARD DELTA SIGMA ADC LTC2488
    		

    

    

    

	
    
    
    

    
    
	
    LTC2488
    13
    2488fa
    APPLICATIONS INFORMATION
    The serial clock pin (SCK) can be congured as either a
    master (SCK is an output generated internally) or a slave
    (SCK is an input and applied externally). Master mode
    (Internal SCK) is selected by simply oating the SCK pin.
    Slave mode (External SCK) is selected by driving SCK low
    during power up and each falling edge of CS. Specic
    details of these SCK modes are described in the Serial
    Interface Timing Modes section.
    Serial Data Output (SDO)
    The serial data output pin (SDO) provides the result of the
    last conversion as a serial bit stream (MSB rst) during
    the data output state. In addition, the SDO pin is used as
    an end of conversion indicator during the conversion and
    sleep states.
    When CS is HIGH, the SDO driver is switched to a high
    impedance state in order to share the data output line with
    other devices. If CS is brought LOW during the conversion
    phase, the EOC bit (SDO pin) will be driven HIGH. Once the
    conversion is complete, if CS is brought LOW, EOC will be
    driven LOW indicating the conversion is complete and the
    result is ready to be shifted out of the device.
    Chip Select (CS)
    The active low CS pin is used to test the conversion status,
    enable I/O data transfer, initiate a new conversion, control
    the duration of the sleep state, and set the SCK mode.
    At the conclusion of a conversion cycle, while CS is HIGH,
    the device remains in a low power sleep state where the
    supply current is reduced several orders of magnitude. In
    order to exit the sleep state and enter the data output state,
    CS must be pulled low. Data is now shifted out the SDO pin
    under control of the SCK pin as described previously.
    A new conversion cycle is initiated either at the conclusion
    of the data output cycle (all 24 data bits read) or by pulling
    CS HIGH any time between the rst and 24th rising edges
    of the serial clock (SCK). In this case, the data output is
    aborted and a new conversion begins.
    Serial Data Input (SDI)
    The serial data input (SDI) is used to select the input
    channel. Data is shifted into the device during the data
    output/input state on the rising edge of SCK while CS is
    low.
    OUTPUT DATA FORMAT
    The LTC2488 serial output stream is 24 bits long. The
    rst bit indicates the conversion status, the second bit is
    always zero, and the third bit conveys sign information.
    The next 17 bits are the conversion result, MSB rst. The
    remaining 4 bits are always LOW.
    Bit 23 (rst output bit) is the end of conversion (EOC)
    indicator. This bit is available on the SDO pin during the
    conversion and sleep states whenever CS is LOW. This
    bit is HIGH during the conversion cycle, goes LOW once
    the conversion is complete, and is HIGH-Z when CS is
    HIGH.
    Bit 22 (second output bit) is a dummy bit (DMY) and is
    always LOW.
    Bit 21 (third output bit) is the conversion result sign
    indicator (SIG). If the selected input (VIN = IN+ – IN–) is
    greater than or equal to 0V, this bit is HIGH. If VIN < 0,
    this bit is LOW.
    Bit 20 (fourth output bit) is the most signicant bit (MSB)
    of the result. This bit in conjunction with Bit 21 also pro-
    vides underrange and overrange indication. If both Bit 21
    and Bit 20 are HIGH, the differential input voltage is above
    +FS. If both Bit 21 and Bit 20 are LOW, the differential
    input voltage is below –FS. The function of these bits is
    summarized in Table 1.
    Table 1. LTC2488 Status Bits
    Input Range
    Bit 23
    EOC
    Bit 22
    DMY
    Bit 21
    SIG
    Bit 20
    MSB
    VIN ≥ 0.5  VREF
    0011
    0V ≤ VIN < 0.5  VREF
    0010
    –0.5  VREF ≤ VIN < 0V
    0001
    VIN < –0.5  VREF
    0000
    Bits 20 to 4 are the 16-bit plus sign conversion result
    MSB rst.
    Bit 4 is the least signicant bit (LSB16).
    Bits 3 to 0 are always LOW.
    
    
    
    
    
    


    


    

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    相關(guān)代理商/技術(shù)參數(shù)
    		

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LTC2489CDE#PBF
功能描述:IC ADC 16BIT DELTA SIG 14-DFN RoHS:是 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:2,500 系列:- 位數(shù):16 采樣率（每秒）:15 數(shù)據(jù)接口:MICROWIRE?，串行，SPI? 轉(zhuǎn)換器數(shù)目:1 功率耗散（最大）:480µW 電壓電源:單電源 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:38-WFQFN 裸露焊盤 供應(yīng)商設(shè)備封裝:38-QFN（5x7） 包裝:帶卷 (TR) 輸入數(shù)目和類型:16 個(gè)單端，雙極；8 個(gè)差分，雙極 配用:DC1011A-C-ND - BOARD DELTA SIGMA ADC LTC2494

    

    
LTC2489CDE#TRPBF
功能描述:IC ADC 16BIT DELTA SIG 14-DFN RoHS:是 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:2,500 系列:- 位數(shù):16 采樣率（每秒）:15 數(shù)據(jù)接口:MICROWIRE?，串行，SPI? 轉(zhuǎn)換器數(shù)目:1 功率耗散（最大）:480µW 電壓電源:單電源 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:38-WFQFN 裸露焊盤 供應(yīng)商設(shè)備封裝:38-QFN（5x7） 包裝:帶卷 (TR) 輸入數(shù)目和類型:16 個(gè)單端，雙極；8 個(gè)差分，雙極 配用:DC1011A-C-ND - BOARD DELTA SIGMA ADC LTC2494

    

    
LTC2489IDE
 制造商:Linear Technology 功能描述:ADC Single Delta-Sigma 7.5sps 16-bit Serial 14-Pin DFN EP

    

    
LTC2489IDE#PBF
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LTC2489IDE#TRPBF
功能描述:IC ADC 16BIT DELTA SIG 14-DFN RoHS:是 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:2,500 系列:- 位數(shù):16 采樣率（每秒）:15 數(shù)據(jù)接口:MICROWIRE?，串行，SPI? 轉(zhuǎn)換器數(shù)目:1 功率耗散（最大）:480µW 電壓電源:單電源 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:38-WFQFN 裸露焊盤 供應(yīng)商設(shè)備封裝:38-QFN（5x7） 包裝:帶卷 (TR) 輸入數(shù)目和類型:16 個(gè)單端，雙極；8 個(gè)差分，雙極 配用:DC1011A-C-ND - BOARD DELTA SIGMA ADC LTC2494

    

    
    
    
    
	
    	
    
    
     
     
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