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    • 1. 发明申请
    • INTEGRATED CALIBRATION CIRCUIT AND A METHOD FOR CALIBRATION OF A FILTER CIRCUIT
    • 集成校准电路和滤波电路校准方法
    • US20160233846A1
    • 2016-08-11
    • US15022239
    • 2013-09-27
    • Cristian PAVAO-MOREIRAOlivier DOAREBirama GOUMBALLA
    • Cristian Pavao-MoreiraOlivier DoareBirama Goumballa
    • H03H7/01G01S7/03
    • H03H7/0161G01S7/032H03H7/12H03H2210/028H03H2210/036H03H2210/04H03H2210/043
    • A calibration circuit and a method for calibrating a RC circuit, such as a high-pass filter, of an integrated circuit are provided. The calibration circuit comprises a filter arrangement having tuneable filter for filtering an input signal having a predetermined frequency. The filter comprises tuneable resistor elements, a saturation detector for detecting saturation and non-saturation of the tuneable filter by comparing a comparison voltage with the signal voltage of the filtered input signal, calibration control logic for providing incrementing and decrementing counter signals. The calibration circuit sets the comparison voltage to a first threshold voltage provides iteratively the incrementing counter signal to the filter until saturation is detected reduces the comparison voltage to a predetermined second threshold voltage after saturation is detected, the second threshold voltage being a lower value than the first threshold voltage, and provides the decrementing counter signal to the filter until non-saturation is detected.
    • 提供了用于校准集成电路的诸如高通滤波器的RC电路的校准电路和方法。 校准电路包括具有可调谐滤波器的滤波器装置,用于对具有预定频率的输入信号进行滤波。 滤波器包括可调谐电阻器元件,饱和检测器,用于通过将比较电压与滤波的输入信号的信号电压进行比较来检测可调谐滤波器的饱和度和不饱和度,校准控制逻辑用于提供递增和递减计数器信号。 校准电路将比较电压设置为第一阈值电压,迭代地向滤波器提供递增计数器信号,直到检测到饱和为止,在检测到饱和后将比较电压降低到预定的第二阈值电压,第二阈值电压比 第一阈值电压,并将递减的计数器信号提供给滤波器,直到检测到不饱和。
    • 5. 发明授权
    • Temperature coefficient factor circuit, semiconductor device, and radar device
    • 温度系数因子电路,半导体器件和雷达装置
    • US09395740B2
    • 2016-07-19
    • US14441246
    • 2012-11-07
    • Cristian Pavao-MoreiraBirama GoumballaDidier Salle
    • Cristian Pavao-MoreiraBirama GoumballaDidier Salle
    • H01L35/00G05F3/26G05F3/24
    • G05F3/262G05F3/24G05F3/245
    • A temperature coefficient factor circuit is provided which generates a current which varies with temperature according to a programmable temperature coefficient factor. The temperature coefficient factor circuit comprises a first current source providing a first current with a positive temperature coefficient factor, a second current source providing a second current with a negative temperature coefficient factor, a common terminal, a first programmable amplifying current mirror, a second programmable amplifying current mirror and a current output circuit. The first programmable amplifying current mirror provides in dependence of a control signal ctrl an amplified first current to the common terminal. The second programmable amplifying current mirror conducts away in dependence of the control signal ctrl an amplified second current from the common terminal. The current output circuit provides the output current based on a difference current between the amplified first current and the amplified second current.
    • 提供一种温度系数因子电路,其产生根据可编程温度系数因子随温度变化的电流。 温度系数因子电路包括提供具有正温度系数因子的第一电流的第一电流源,提供具有负温度系数因子的第二电流的第二电流源,公共端,第一可编程放大电流镜,第二可编程 放大电流镜和电流输出电路。 第一个可编程放大电流镜根据控制信号控制放大的第一电流到公共端。 第二可编程放大电流镜根据控制信号控制从公共端子放大的第二电流。 电流输出电路基于放大的第一电流和放大的第二电流之间的差电流提供输出电流。