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1. 发明公开

EP0744829A1 A high-pass filter, particularly for cancelling out the offset in a chain of amplifiers 失效
标题翻译： Hochpassfilter，insbesonderefürdieOffsetunterdrückungin einerVerstärkerkette
公开(公告)号：EP0744829A1
公开(公告)日：1996-11-27
申请号：EP95830217.6
申请日：1995-05-22
申请人： SGS-THOMSON MICROELECTRONICS S.r.l.
发明人： Tomasini, Luciano , Castello, Rinaldo , Bietti, Ivan , Clerici, Giancarlo
IPC分类号： H03H1/00 , H03F3/45
CPC分类号： H03F3/45475 , H03F3/45982 , H03F2203/45526
摘要： The high-pass filter described comprises at least one circuit unit constituted by a first branch (A) and a second branch (B) both connected to an input (IN) of the filter on one side and, on the other side, to an adder (OP) the output of which is the output (OUT) of the filter. The first branch (A) comprises means (Rff) for transferring an input signal substantially without modifying its frequency content, and the second branch (B) comprises a low-pass filter (Rsc, C'fil). The whole is of dimensions such that the components of the input signal with frequencies below the cut-off frequency of the low-pass filter are substantially cancelled out at the output of the adder.
The filter is suitable for being produced within a particularly small area in an integrated circuit.
摘要翻译：所描述的高通滤波器包括由第一分支（A）和第二分支（B）构成的至少一个电路单元，其两端都连接到一侧的滤波器的输入端（IN），另一侧连接到加法器（OP），其输出是滤波器的输出（OUT）。第一分支（A）包括用于基本上不修改其频率内容来传送输入信号的装置（Rff），并且第二分支（B）包括低通滤波器（Rsc，C'fil）。整体尺寸使得低频滤波器的截止频率以下的输入信号的分量在加法器的输出端基本抵消。该滤波器适用于在集成电路的特别小的区域内产生。

2. 发明公开

EP0739120A1 Speech circuit for subscriber telephone apparatus 失效
标题翻译： Sprechschaltungfüreine Fernsprechstelle
公开(公告)号：EP0739120A1
公开(公告)日：1996-10-23
申请号：EP95830138.4
申请日：1995-04-11
申请人： SGS-THOMSON MICROELECTRONICS S.r.l.
发明人： Tomasini, Luciano , Castello, Rinaldo , Bietti, Ivan , Clerici, Giancarlo
IPC分类号： H04M1/00 , H04M1/58 , H04M1/76 , H04B1/58
CPC分类号： H04M1/585 , H04B1/586 , H04M1/76
摘要： The speech circuit described matches the impedance of the telephone line by synthesizing a complex impedance by means of a positive feedback loop comprising a single resistor (11) and cancels out the side tone by means of a subtracter (20') which extracts from the signal (Va) coming from the line a signal (Vb) correlated to the signal to be transmitted.
In order to achieve cancellation of the side tone unaffected by the noise produced in the circuits for synthesizing the impedance, the signal (Vb) correlated to the signal to be transmitted is derived by processing the signal present in the resistor (11) at the output of the feedback loop.
摘要翻译：所描述的语音电路通过借助于包括单个电阻器（11）的正反馈回路合成复阻抗来匹配电话线路的阻抗，并通过从信号提取的减法器（20'）消除侧音（Va）与来自所述发送信号的信号（Vb）相对应。为了实现不受在用于合成阻抗的电路中产生的噪声的侧音的抵消，通过在输出端处理存在于电阻器（11）中的信号，导出与要发送的信号相关的信号（Vb）的反馈回路。

3. 发明公开

EP0777319A1 Operational amplifier having an adjustable frequency compensation 失效
标题翻译：操作员操作员频繁补偿
公开(公告)号：EP0777319A1
公开(公告)日：1997-06-04
申请号：EP95830500.5
申请日：1995-11-30
申请人： SGS-THOMSON MICROELECTRONICS S.r.l.
发明人： Tomasini, Luciano , Castello, Rinaldo , Clerici, Giancarlo , Bietti, Ivan
IPC分类号： H03F1/00 , H03F1/08
CPC分类号： H03F1/086
摘要： An operational amplifier (5) with adjustable frequency compensation comprises a transconductance input stage (2) and an amplifier output stage (3) connected serially together between an input terminal (IN) and an output terminal (OUT) of the operational amplifier. At least one compensation block (6) is connected across the input and the output of said output stage (3),
According to the invention, the compensation block (6) comprises a plurality (N) of charge storage elements (C Cn ) connected in parallel together and in series to a switch block (7) which selectively connects a sub-plurality (N') of said charge storage elements (C Cn ) across the input and the output of said output stage (3) on the basis of an external signal (SEL) of the amplifier (5).
摘要翻译：具有可调频率补偿的运算放大器（5）包括串联连接在运算放大器的输入端（IN）和输出端（OUT）之间的跨导输入级（2）和放大器输出级（3）。至少一个补偿块（6）连接在所述输出级（3）的输入端和输出端之间。根据本发明，补偿块（6）包括多个（N）个电荷存储元件（CCn）并联并连接到开关块（7），该开关块（7）基于外部电路选择性地连接跨输入端和所述输出级（3）的输出的所述电荷存储元件（CCn）的子多个（N'）放大器（5）的信号（SEL）。

4. 发明公开

EP0772299A1 An interface circuit for controlling electronic switches with boosted voltage signals 失效
标题翻译：用于控制电子开关具有增加的电压信号接口电路
公开(公告)号：EP0772299A1
公开(公告)日：1997-05-07
申请号：EP95830455.2
申请日：1995-10-30
申请人： SGS-THOMSON MICROELECTRONICS S.r.l.
发明人： Tomasini, Luciano , Castello, Rinaldo , Clerici, Giancarlo , Bietti, Ivan
IPC分类号： H03K17/06
CPC分类号： H03K17/063
摘要： The interface circuit described is disposed between a generator (LG) of control signals (CS) and a plurality of electronic switches (SW) in order to produce boosted voltage signals (SCS) corresponding to the control signals (CS) for activating the electronic switches (SW). To avoid the use of capacitors with high capacitance and thus to save area of the integrated circuit, the circuit comprises a generator (SCK) of boosted-voltage clock signals (φ, φ ¯ ) and a plurality of voltage multipliers (VM) each having an input connected to an output of the control signal generator (LG), an output connected to at least one terminal for activating an electronic switch (SW) and two control terminals connected to the boosted-voltage clock-signal generator.
摘要翻译：所描述的接口电路被用于激活电子开关对应于控制信号（CS）的发电机控制信号的（LG）（CS）和电子开关（SW），以产生升压电压信号（SCS）多个之间设置（SW）。为了避免使用具有高电容的电容器，因而保存集成电路的面积，该电路包括升压电压的时钟信号的发生器（SCK）（PHI，PHI）和电压倍增器的多个（VM）每一个具有在输入端连接到输出连接到至少一个终端，用于电子开关（SW）和连接到所述升压电压时钟信号发生器两个控制端子的激活控制信号发生器（LG）来输出的。

5. 发明公开

EP0777318A1 Frequency self-compensated operational amplifier 失效
标题翻译：常见问题解答
公开(公告)号：EP0777318A1
公开(公告)日：1997-06-04
申请号：EP95830497.4
申请日：1995-11-30
申请人： SGS-THOMSON MICROELECTRONICS S.r.l.
发明人： Tomasini, Luciano , Castello, Rinaldo , Clerici, Giancarlo , Bietti, Ivan
IPC分类号： H03F1/00 , H03F1/08
CPC分类号： H03F1/086
摘要： An operational amplifier frequency self-compensated with respect to closed-loop gain comprises a transconductance input stage (2) and an amplifier output stage (3) connected serially together to receive an input signal (S in ) on at least one input terminal (IN) of the amplifier and generate an amplified signal (S out ) on an output terminal (OUT) of the amplifier. Provided between the input (2) and output (3) stages is an intermediate node (S) which is connected to a compensation block (11) to receive a frequency-variable compensation signal (Sc) therefrom.
According to the invention, the compensation block (11) is coupled with its input to the input terminal (IN) of the amplifier.
The compensation block (11) is connected to receive at least the feedback signal (Sf). Preferably,
the compensation signal (Sc) is variable as a function of a gain value (G cl ) which is determined by the feedback circuit, and said variation of the compensation signal occurs in a relationship of inverse proportionality to the gain value.
This invention is useful in discrete circuits whose operational amplifier forms a device by itself, as well as in fully integrated circuits.
摘要翻译：相对于闭环增益自补偿的运算放大器频率包括串联连接以在至少一个输入端（IN）上接收输入信号（Sin）的跨导输入级（2）和放大器输出级（3）并在放大器的输出端（OUT）上产生放大信号（Sout）。在输入（2）和输出（3）级之间设置有中间节点（S），其连接到补偿块（11）以从其接收频率可变补偿信号（Sc）。根据本发明，补偿块（11）与其输入耦合到放大器的输入端（IN）。补偿块（11）被连接以至少接收反馈信号（Sf）。优选地，补偿信号（Sc）作为由反馈电路确定的增益值（Gcl）的函数而变化，并且补偿信号的所述变化以与增益值成反比关系的关系发生。本发明在其运算放大器本身以及完全集成电路中形成器件的分立电路中是有用的。

6. 发明公开

EP0735682A1 MOS transistor switching circuit without body effect 失效
标题翻译： MOS - 晶体管 - Schaltkreis ohneKörpereffekt
公开(公告)号：EP0735682A1
公开(公告)日：1996-10-02
申请号：EP95830122.8
申请日：1995-03-31
申请人： SGS-THOMSON MICROELECTRONICS S.r.l.
发明人： Tomasini, Luciano , Castello, Rinaldo , Clerici, Giancarlo , Bietti, Ivan
IPC分类号： H03K17/687
CPC分类号： H03K17/6874 , H03K17/162 , H03K2217/0018
摘要： Switching circuit with MOS transistors without body effect comprising a first transistor (M1) inserted with source and drain terminals between two connection terminals (S,D) and a second (M2) and a third (M3) transistor inserted in mutual series by means of their respective source and drain terminals between the first transistor (M1) and a ground (GND).
The gate terminal of the second transistor (M2) is connected to the gate terminal of the first transistor (M1) to which is applied a command signal (C) upon switching in phase opposition to that which is applied to the gate terminal of the third transistor (M3).
The substrates of the first and the second transistors (M1,M2) are connected to a connection node (N) between the second and third transistor (M2,M3). The substrate of the third transistor (M3) is connected to ground.
摘要翻译：具有不具有体效应的MOS晶体管的开关电路包括在两个连接端子（S，D）和第二（M2）和第三（M3）晶体管之间插入源极和漏极端子的第一晶体管（M1）它们各自的源极和漏极端子在第一晶体管（M1）和地（GND）之间。第二晶体管（M2）的栅极端子与第一晶体管（M1）的栅极端子连接，在与第三晶体管（M1）的栅极端子相反地施加相位反相时施加指令信号（C）的栅极端子晶体管（M3）。第一和第二晶体管（M1，M2）的基板连接到第二和第三晶体管（M2，M3）之间的连接节点（N）。第三晶体管（M3）的基板连接到地。

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