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公开(公告)号：US09264062B1
公开(公告)日：2016-02-16
申请号：US14644941
申请日：2015-03-11
摘要： A digital to analog converter including a current source for providing a master current, a first sub digital to analog converter coupled to the current source which generates a plurality of currents, and a second sub digital to analog converter coupled to at least one of the plurality of currents from the first sub digital to analog converter which generates a second plurality of currents. The digital to analog converter also includes an overlap adjustment circuit coupled with the second sub digital to analog converter which adds current. The digital to analog converter is configured to operate in a first mode for generating a sine wave with a first bit level accuracy and, when in the first mode, the overlap adjustment circuit adds no current. to the second sub digital to analog converter The digital to analog converter is configured to operate in a second mode for generating a ramp wave with a second bit level accuracy and, when in the second mode, the overlap adjustment circuit adds current to the second sub digital to analog converter. When in the second mode, the total current of the second sub digital to analog converter and the overlap converter is greater than one of the plurality of currents generated by the first sub digital to analog converter.
摘要翻译： 一种数模转换器，包括用于提供主电流的电流源，耦合到产生多个电流的电流源的第一子数模转换器，以及耦合到多个电流中的至少一个的第二子数模转换器 从产生第二多个电流的第一子数字到模拟转换器的电流。 数模转换器还包括与第二子数模转换器耦合的重叠调整电路，其增加电流。 数模转换器被配置为以第一模式工作，以产生具有第一位电平精度的正弦波，并且当处于第一模式时，重叠调整电路不加电流。 到第二子数字到模拟转换器数模转换器被配置为在第二模式下操作以产生具有第二位电平精度的斜波，并且当处于第二模式时，重叠调整电路将电流加到第二子电平 数模转换器。 当处于第二模式时，第二子数模转换器和重叠转换器的总电流大于由第一子数模转换器产生的多个电流之一。
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2.发明申请公开(公告)号：US20150244393A1
公开(公告)日：2015-08-27
申请号：US14189841
申请日：2014-02-25
IPC分类号： H03M3/00
摘要： A quantizer for an analog to digital converter has an input for receiving an analog input signal. A detector senses a common mode voltage component of the input signal. A reference voltage source produces a plurality of reference voltages. A voltage source biases the reference voltage source in response to the sensed common mode voltage component. Therefore, the common mode voltage in the input signal establishes the common mode voltage of the reference voltage source. A plurality of comparators are connected to the reference voltage source, wherein each of the plurality of comparators compares the input signal to one of the plurality of reference voltages and produces a output bit denoting a result of the comparing.
摘要翻译： 用于模数转换器的量化器具有用于接收模拟输入信号的输入。 检测器检测输入信号的共模电压分量。 参考电压源产生多个参考电压。 电压源响应于感测的共模电压分量偏置参考电压源。 因此，输入信号中的共模电压建立了参考电压源的共模电压。 多个比较器连接到参考电压源，其中多个比较器中的每一个将输入信号与多个参考电压中的一个进行比较，并产生表示比较结果的输出位。
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3.发明授权公开(公告)号：US09148169B2
公开(公告)日：2015-09-29
申请号：US14189841
申请日：2014-02-25
IPC分类号： H03M3/00
摘要： A quantizer for an analog to digital converter has an input for receiving an analog input signal. A detector senses a common mode voltage component of the input signal. A reference voltage source produces a plurality of reference voltages. A voltage source biases the reference voltage source in response to the sensed common mode voltage component. Therefore, the common mode voltage in the input signal establishes the common mode voltage of the reference voltage source. A plurality of comparators are connected to the reference voltage source, wherein each of the plurality of comparators compares the input signal to one of the plurality of reference voltages and produces a output bit denoting a result of the comparing.
摘要翻译： 用于模数转换器的量化器具有用于接收模拟输入信号的输入。 检测器检测输入信号的共模电压分量。 参考电压源产生多个参考电压。 电压源响应于感测的共模电压分量偏置参考电压源。 因此，输入信号中的共模电压建立了参考电压源的共模电压。 多个比较器连接到参考电压源，其中多个比较器中的每个比较器将输入信号与多个参考电压中的一个进行比较，并产生表示比较结果的输出位。
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