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    參數(shù)資料
    型號(hào): MB96F345FSPQC-GSE2
    元件分類: 微控制器/微處理器
    英文描述: 16-BIT, FLASH, 56 MHz, MICROCONTROLLER, PQFP100
    封裝: 20 X 14 MM, 3.35 MM HEIGHT, 0.65 MM PITCH, PLASTIC, QFP-100
    文件頁數(shù): 113/116頁
    文件大?。?/td> 3360K
    代理商: MB96F345FSPQC-GSE2
    MB96340 Series
    96
    FME-MB96340 rev 9
    Notes on A/D Converter Section
    About the external impedance of the analog input and the sampling time of the A/D converter (with sample
    and hold circuit):
    If the external impedance is too high to keep sufcient sampling time, the analog voltage charged to the
    internal sample and hold capacitor is insufcient, adversely affecting A/D conversion precision.
    3FF
    3FE
    3FD
    004
    003
    002
    001
    AVRL
    AVRH
    AVRL
    AVRH
    N
    + 1
    N
    1
    N
    2
    VOT (actual measurement value)
    {1 LSB
    × (N 1)
    + VOT }
    Actual conversion
    characteristics
    VFST (actual
    measurement
    value)
    VNT (actual
    measurement value)
    Actual conversion
    characteristics
    Ideal characteristics
    Actual conversion
    characteristics
    Actual conversion
    characteristics
    Ideal
    characteristics
    Digital
    output
    Digital
    output
    Analog input
    VNT
    (actual measurement value)
    V (N + 1) T
    (actual measurement
    value)
    Nonlinearity error
    Differential nonlinearity error
    Differential nonlinearity error of digital output N
    =
    1 LSB
    =
    analog input circuit model:
    Comparator
    Sampling switch
    R
    C
    Analog input
    Reference value:
    C = 8.5 pF (Max)
    Nonlinearity error of digital output N
    =
    VNT
    {1 LSB × (N 1) + VOT}
    1 LSB
    [LSB]
    V (N+1) T
    VNT
    1 LSB
    1 LSB [LSB]
    VFST
    VOT
    1022
    [V]
    N
    : A/D converter digital output value
    VOT : Voltage at which digital output transits from “000H” to “001H.”
    VFST : Voltage at which digital output transits from “3FEH” to “3FFH.”
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