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    參數(shù)資料
    

    


    


    
型號：
LTC2481CDD#PBF

    

    
廠商：
Linear Technology

    

    
文件頁數(shù)：
24/40頁

    

    
文件大?。?/td>
0K

    

    
描述：
IC ADC 16BIT I2C 10-DFN

    

    
標(biāo)準(zhǔn)包裝：
121

    

    
位數(shù)：
16
    		

    

    
采樣率（每秒）：
7.5
    		

    

    
數(shù)據(jù)接口：
I²C，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：
0°C ~ 70°C
    		

    

    
安裝類型：
表面貼裝
    		

    

    
封裝/外殼：
10-WFDFN 裸露焊盤
    		

    

    
供應(yīng)商設(shè)備封裝：
10-DFN（3x3）
    		

    

    
包裝：
管件
    		

    

    
輸入數(shù)目和類型：
2 個單端，雙極；1 個差分，雙極
    		

    

    
產(chǎn)品目錄頁面：
1348 (CN2011-ZH PDF)
    		

    

    
配用：
DC951A-ND - BOARD DELTA SIGMA ADC LTC2481
    		

    

    

    

	
    
    
    

    
    
	
    LTC2481
    30
    2481fc
    APPLICATIONS INFORMATION
    In 1x speed mode, the regions of low rejection occurring
    at integer multiples of fS have a very narrow bandwidth.
    Magnied details of the normal mode rejection curves
    are shown in Figure 33 (rejection near DC) and Figure 34
    (rejection at fS = 256fN) where fN represents the notch
    frequency. These curves have been derived for the exter-
    nal oscillator mode but they can be used in all operating
    modes by appropriately selecting the fN value.
    The user can expect to achieve this level of performance
    using the internal oscillator as it is demonstrated by
    Figures 35, 36 and 37. Typical measured values of the
    normal mode rejection of the LTC2481 operating with an
    internal oscillator and a 60Hz notch setting are shown in
    Figure 35 superimposed over the theoretical calculated
    curve. Similarly, the measured normal mode rejection of
    the LTC2481 for the 50Hz rejection mode and 50Hz/60Hz
    rejection mode are shown in Figures 36 and 37.
    As a result of these remarkable normal mode specica-
    tions, minimal (if any) antialias ltering is required in front
    of the LTC2481. If passive RC components are placed in
    front of the LTC2481, the input dynamic current should
    be considered (see Input Current section). In this case,
    the differential input current cancellation feature of the
    LTC2481 allows external RC networks without signicant
    degradation in DC performance.
    Traditional high order delta-sigma modulators, while
    providing very good linearity and resolution, suffer
    from potential instabilities at large input signal levels.
    The proprietary architecture used for the LTC2481 third
    order modulator resolves this problem and guarantees a
    predictable stable behavior at input signal levels of up to
    150% of full-scale. In many industrial applications, it is
    not uncommon to have to measure microvolt level signals
    superimposed on volt level perturbations and the LTC2481
    is eminently suited for such tasks. When the perturbation
    is differential, the specication of interest is the normal
    mode rejection for large input signal levels. With a refer-
    ence voltage VREF = 5V, the LTC2481 has a full-scale dif-
    ferential input range of 5V peak-to-peak. Figures 38 and
    39 show measurement results for the LTC2481 normal
    mode rejection ratio with a 7.5V peak-to-peak (150% of
    full scale) input signal superimposed over the more tradi-
    tional normal mode rejection ratio results obtained with a
    5V peak-to-peak (full-scale) input signal. In Figure 38, the
    LTC2481 uses the internal oscillator with the notch set at
    60Hz and in Figure 39 it uses the internal oscillator with
    the notch set at 50Hz. It is clear that the LTC2481 rejection
    performance is maintained with no compromises in this
    extreme situation. When operating with large input signal
    levels, the user must observe that such signals do not
    violate the device absolute maximum ratings.
    Figure 33. Input Normal Mode Rejection at DC
    Figure 34. Input Normal Mode Rejection at fs = 256fN
    INPUT SIGNAL FREQUENCY (Hz)
    INPUT
    NORMAL
    MODE
    REJECTION
    (dB)
    2481 F33
    0
    –10
    –20
    –30
    –40
    –50
    –60
    –70
    –80
    –90
    –100
    –110
    –120
    fN
    0
    2fN 3fN 4fN 5fN 6fN 7fN 8fN
    fN = fEOSC/5120
    INPUT SIGNAL FREQUENCY (Hz)
    250fN 252fN 254fN 256fN 258fN 260fN 262fN
    INPUT
    NORMAL
    MODE
    REJECTION
    (dB)
    2481 F34
    0
    –10
    –20
    –30
    –40
    –50
    –60
    –70
    –80
    –90
    –100
    –110
    –120
    
    
    
    
    
    


    


    

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    相關(guān)代理商/技術(shù)參數(shù)
    		

    參數(shù)描述
    		

    
    

    
LTC2481HDD#PBF
功能描述:IC ADC 16BIT I2C 7.5SPS 10DFN 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 個單端，雙極；8 個差分，雙極 配用:DC1011A-C-ND - BOARD DELTA SIGMA ADC LTC2494

    

    
LTC2481HDD#TRPBF
功能描述:IC ADC DELTA SIGMA 16BIT 10DFN 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 個單端，雙極；8 個差分，雙極 配用:DC1011A-C-ND - BOARD DELTA SIGMA ADC LTC2494

    

    
LTC2481IDD#PBF
功能描述:IC ADC 16BIT I2C 10-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:- 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 個單端，單極；2 個差分，單極 產(chǎn)品目錄頁面:1156 (CN2011-ZH PDF) 其它名稱:497-5435-6

    

    
LTC2481IDD#TRPBF
功能描述:IC ADC 16BIT I2C 10-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 個單端，雙極；8 個差分，雙極 配用:DC1011A-C-ND - BOARD DELTA SIGMA ADC LTC2494

    

    
LTC2482CDD
 制造商:Linear Technology 功能描述:ADC Single Delta-Sigma 6.8sps 16-bit Serial 10-Pin DFN EP

    

    
    
    
    
	
    	
    
    
     
     
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