A process for compensating matching errors in analog/digital converters of cascaded structure and a corresponding converter
    1.
    发明公开
    A process for compensating matching errors in analog/digital converters of cascaded structure and a corresponding converter 审中-公开
    在弗吉尼亚州的Kaskadierten公司的模拟数字化Wandler和Wandlerdafür的Verfahren zur Kompensation von Ausgleichfehler

    公开(公告)号:EP1217746A1

    公开(公告)日:2002-06-26

    申请号:EP00830829.8

    申请日:2000-12-18

    CPC classification number: H03M3/344 H03M3/46

    Abstract: A test signal (TS) with given spectral characteristics is injected (201) at input to the quantizer stage (20) of the converter. The same test signal (TS) is subjected to cross-correlation (30) with a given signal (Y(z)) so as to generate (31) coefficients used for filtering (32) the quantization noise converted (27) into digital form. In this way, a compensation signal is obtained which is applied to the output signal of the quantizer stage (20) jointly with a first compensation signal obtained by applying, to the quantization noise converted into digital form, the same transfer function (28) of the converter. In this way a signal is obtained which, in addition to being used as the global output signal (Y(z)) of the converter, is also used for the aforesaid operation of cross-correlation with the test signal (TS).

    Abstract translation: 具有给定频谱特性的测试信号(TS)在输入端被注入(201)到转换器的量化器级(20)。 相同的测试信号(TS)用给定信号(Y(z))进行互相关(30),以便产生(31)用于将量化噪声转换(27)滤波(32)的数字(31)的数字形式 。 以这种方式,获得补偿信号,该补偿信号与通过将转换成数字形式的量化噪声应用于与量化级(20)的输出信号相同的传递函数(28)获得的第一补偿信号 转换器。 以这种方式,获得除了用作转换器的全局输出信号(Y(z))之外的信号也用于上述与测试信号(TS)的互相关的操作的操作。

    Generation of temperature compensation low noise symmetrical reference voltages
    7.
    发明公开
    Generation of temperature compensation low noise symmetrical reference voltages 失效
    Erzeugung von symetrischen temperaturkompensierten rauscharmen Referenzspannungen

    公开(公告)号:EP0911978A1

    公开(公告)日:1999-04-28

    申请号:EP97830534.0

    申请日:1997-10-23

    CPC classification number: G05F3/262 G05F1/561 Y10S323/907

    Abstract: Generation of symmetrical temperature compensated reference voltages in mixed type integrated circuits with a superior PSRR includes the use of a voltage-to-current conversion stage of a temperature independent bandgap voltage for producing eventually a differential pair of currents that are input to a pair of transresistance feedback operational amplifiers the feedback resistors of which are integrated in an interlaced form with a resistor employed in said conversion stage.

    Abstract translation: 在具有优异PSRR的混合型集成电路中生成对称的温度补偿参考电压包括使用与温度无关的带隙电压的电压 - 电流转换级,以最终产生输入到一对跨阻的差分电流对 反馈运算放大器,其反馈电阻器以隔行形式集成在所述转换级中使用的电阻器。

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