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    A circuit structure of the feedforward type with programmable zeroes, particularly for synthesizing time-continual filters
    4.
    发明公开
    A circuit structure of the feedforward type with programmable zeroes, particularly for synthesizing time-continual filters 有权
    正向电路结构具有可编程零用于合成连续时间滤波器

    公开(公告)号：EP1146639A3

    公开(公告)日：2003-04-16

    申请号：EP01100814.1

    申请日：2001-01-15

    Applicant: STMicroelectronics S.r.l.

    Inventor： Pisati, Valerio ,  Portaluri, Salvatore ,  Cazzaniga, Marco ,  Castello, Rinaldo

    IPC: H03H11/04

    CPC classification number: H03H11/0422

    Abstract: This invention relates to a circuit structure of the feedforward type with programmable zeroes, particularly for synthesizing time-continual filters. This structure comprises a pair of amplification cells (14,15) interconnected at at least one interconnection node (A) and connected between a first signal (Vin) input (IN) of a first cell (14) and an output terminal (U) of the second cell (15, each cell (14,15) comprising a pair of transistors (10,2;6,7) which have a conduction terminal in common and have the other conduction terminals coupled respectively to a first voltage reference (Vcc) through respective bias members (3,4;9,11). The structure further comprises a circuit leg (13) connecting a node (X) of the first cell (14) to the output terminal (U) and comprising a transistor (8) which has a control terminal connected to the node (X) of the first cell (14), a first conduction terminal connected to the output terminal (U), and a second conduction terminal coupled to a second voltage reference (GND) through a capacitor (Cc). Thus, a released "zero" can be introduced in the right semiplane of the pole-zero complex plane to improve the flattening of group gain.

    A circuit structure of the feedforward type with programmable zeroes, particularly for synthesizing time-continual filters
    9.
    发明公开
    A circuit structure of the feedforward type with programmable zeroes, particularly for synthesizing time-continual filters 有权
    向前电路结构具有可编程零用于合成连续时间滤波器

    公开(公告)号：EP1146639A2

    公开(公告)日：2001-10-17

    申请号：EP01100814.1

    申请日：2001-01-15

    Applicant: STMicroelectronics S.r.l.

    Inventor： Pisati, Valerio ,  Portaluri, Salvatore ,  Cazzaniga, Marco ,  Castello, Rinaldo

    IPC: H03H11/04

    CPC classification number: H03H11/0422

    Abstract: This invention relates to a circuit structure of the feedforward type with programmable zeroes, particularly for synthesizing time-continual filters.
    This structure comprises a pair of amplification cells (14,15) interconnected at at least one interconnection node (A) and connected between a first signal (Vin) input (IN) of a first cell (14) and an output terminal (U) of the second cell (15, each cell (14,15) comprising a pair of transistors (10,2;6,7) which have a conduction terminal in common and have the other conduction terminals coupled respectively to a first voltage reference (Vcc) through respective bias members (3,4;9,11). The structure further comprises a circuit leg (13) connecting a node (X) of the first cell (14) to the output terminal (U) and comprising a transistor (8) which has a control terminal connected to the node (X) of the first cell (14), a first conduction terminal connected to the output terminal (U), and a second conduction terminal coupled to a second voltage reference (GND) through a capacitor (Cc).
    Thus, a released "zero" can be introduced in the right semiplane of the pole-zero complex plane to improve the flattening of group gain.

    Abstract translation: 本发明涉及前馈型具有可编程零，特别是对于合成时间连续滤波器的电路结构。 这个结构包括至少一个互连节点（A）相互连接，并且连接的第一信号（Vin）输入第一小区的（IN）（14）之间和输出端子的一对扩增的细胞（14,15）（U） 所述第二小区（15，每个单元（14,15）包括一对晶体管（10.2，6.7），其具有共同的导通端子，并具有分别耦合到第一电压基准的其他导通端子（VCC ）通过respectivement偏置构件（3.4; 9.11）所述结构还包括一个电路腿（13）连接所述第一单元（14）到输出端（U）的一个节点（X）并包括一个晶体管（。 8），其具有连接到所述第一单元（14），连接到所述输出端（U）的第一导通端子，以及耦合到第二电压基准（GND）通过第二传导端的节点（X）的控制端子 电容器（CC），因此，释放“零”可以在零极点复杂的计划，以改善的右半平面上引入 组增益平坦化。

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