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  • 參數(shù)資料
    型號: MB90549PF
    廠商: FUJITSU LTD
    元件分類: 微控制器/微處理器
    英文描述: 16-BIT, MROM, 16 MHz, MICROCONTROLLER, PQFP100
    封裝: PLASTIC, QFP-100
    文件頁數(shù): 36/64頁
    文件大小: 1525K
    代理商: MB90549PF
    MB90590 Series
    41
    6.
    A/D Converter Glossary
    Resolution: Analog changes that are identifiable with the A/D converter
    Linearity error: The deviation of the straight line connecting the zero transition point (“00 0000 0000”
    “00
    0000 0001”) with the full-scale transition point (“11 1111 1110”
    “11 1111 1111”) from actual
    conversion characteristics
    Differential linearity error: The deviation of input voltage needed to change the output code by 1 LSB from the
    theoretical value
    Total error: The total error is defined as a difference between the actual value and the theoretical value, which
    includes zero-transition error/full-scale transition error and linearity error.
    (Continued)
    Total error
    3FF
    3FE
    3FD
    004
    003
    002
    001
    Analog input
    AVR
    AVR
    +
    Actual conversion
    value
    D
    ig
    it
    a
    l
    o
    u
    tp
    u
    t
    VNT
    (mesured value)
    0.5 LSB
    Actual conversion
    characteristics
    Theoretical
    characteristics
    0.5 LSB
    {1 LSB
    × (N – 1) + 0.5 LSB}
    [V]
    AVR
    + – AVR
    1024
    1 LSB = (Theoretical value)
    VOT (Theoretical value) = AVR
    + 0.5 LSB[V]
    VFST (Theoretical value) = AVR
    + – 1.5 LSB[V]
    Total error for digital output N
    [LSB]
    VNT – {1 LSB
    × (N – 1) + 0.5 LSB}
    1 LSB
    =
    VNT: Voltage at a transition of digital output from (N – 1) to N
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