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    • 4. 发明申请
    • Digital-to-Analog Converter of the Finite Impulse Response Type
    • 数字到模拟转换器的有限脉冲响应类型
    • US20080266156A1
    • 2008-10-30
    • US12065625
    • 2006-08-23
    • Paulus Petrus Franciscus Maria Bruin
    • Paulus Petrus Franciscus Maria Bruin
    • H03M3/02H03H17/02
    • H03M3/504
    • In a signal processing arrangement, a digital-to-analog converter (DAC1) of the finite impulse response type converts a serial bitstream (BSL) into an analog output signal (AL). The digital-to-analog converter (DAC1) comprises at least two current source arrays (CCA1, CC A2). In a first current source array (CCA1), a current definition cell (CD1) generates a first basic current, and a plurality of first current copy cells ( . . . , CC40, CC41, . . . ) provide respective scaled copies of the first basic current to constitute first filter coefficient currents ( . . . , IP40, IP41, . . . ). In a further current source array (CCA2), a further current definition cell (CD2) generates a further basic current, and a plurality of current further copy cells (CC1, CC2, . . . , CC80) provide respective scaled copies of the further basic current to constitute further filter coefficient currents (IP1, IP2, . . . , IP80). A switch-and-shift array (XSA) individually passes the respective filter coefficient currents (IP1, IP2, . . . , IP40, IP41, . . . , IP80) to a signal output (CVC), or to another point (DLD), depending on respective successive bit values in the serial bitstream (BSL).
    • 在信号处理装置中,有限脉冲响应类型的数模转换器(DAC1)将串行比特流(BSL)转换为模拟输出信号(AL)。 数模转换器(DAC 1)包括至少两个电流源阵列(CCA 1,CC A 2)。 在第一电流源阵列(CCA 1)中,当前定义单元(CD 1)产生第一基本电流,并且多个第一当前复制单元(...,CC 40,CC 41,...) 第一基本电流的缩放副本构成第一滤波器系数电流(...,IP 40,IP 41,...)。 在另一个电流源阵列(CCA 2)中,另一电流定义单元(CD2)产生另一个基本电流,并且多个当前进一步复制单元(CC 1,CC 2,...,CC 80)分别提供 进一步的基本电流的缩放副本以构成更多的滤波器系数电流(IP 1,IP 2,...,IP 80)。 开关移位阵列(XSA)将相应的滤波器系数电流(IP 1,IP 2,...,IP 40,IP 41,...,IP 80)分别传递到信号输出(CVC),或 到另一点(DLD),取决于串行比特流(BSL)中的相应连续的比特值。
    • 5. 发明授权
    • Digital-to-analog converter of the finite impulse response type
    • 有限脉冲响应类型的数模转换器
    • US07656333B2
    • 2010-02-02
    • US12065625
    • 2006-08-23
    • Paulus Petrus Franciscus Maria Bruin
    • Paulus Petrus Franciscus Maria Bruin
    • H03M1/66
    • H03M3/504
    • In a signal processing arrangement, a digital-to-analog converter (DAC1) of the finite impulse response type converts a serial bitstream (BSL) into an analog output signal (AL). The digital-to-analog converter (DAC1) comprises at least two current source arrays (CCA1, CC A2). In a first current source array (CCA1), a current definition cell (CD1) generates a first basic current, and a plurality of first current copy cells ( . . . , CC40, CC41, . . . ) provide respective scaled copies of the first basic current to constitute first filter coefficient currents ( . . . , IP40, IP41, . . . ). In a further current source array (CCA2), a further current definition cell (CD2) generates a further basic current, and a plurality of current further copy cells (CC1, CC2, . . . , CC80) provide respective scaled copies of the further basic current to constitute further filter coefficient currents (IP1, IP2, . . . , IP80). A switch-and-shift array (XSA) individually passes the respective filter coefficient currents (IP1, IP2, . . . , IP40, IP41, . . . , IP80) to a signal output (CVC), or to another point (DLD), depending on respective successive bit values in the serial bitstream (BSL).
    • 在信号处理装置中,有限脉冲响应型的数模转换器(DAC1)将串行比特流(BSL)转换为模拟输出信号(AL)。 数模转换器(DAC1)包括至少两个电流源阵列(CCA1,CC A2)。 在第一电流源阵列(CCA1)中,当前定义单元(CD1)产生第一基本电流,并且多个第一当前复制单元(...,CC40,CC41 ...)提供相应的缩放副本 第一基本电流构成第一滤波器系数电流(...,IP40,IP41,...)。 在另一电流源阵列(CCA2)中,另一电流定义单元(CD2)产生另外的基本电流,并且多个当前进一步的复制单元(CC1,CC2,...,CC80)提供另外的另外的基准电流 基本电流构成进一步的滤波系数电流(IP1,IP2,...,IP80)。 开关移位阵列(XSA)将各自的滤波器系数电流(IP1,IP2,...,IP40,IP41,...,IP80)分别传递到信号输出(CVC)或另一点(DLD ),取决于串行比特流(BSL)中的相应的连续比特值。