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33 条记录 (耗时 0.013 秒)

    An integrated circuit with automatic compensation for deviations of the capacitances from nominal values
    4.
    发明公开
    An integrated circuit with automatic compensation for deviations of the capacitances from nominal values 失效
    有能力的期望值的偏差的自动补偿集成电路

    公开(公告)号：EP0794609A1

    公开(公告)日：1997-09-10

    申请号：EP96830103.6

    申请日：1996-03-08

    申请人： SGS-THOMSON MICROELECTRONICS s.r.l. ,  CO.RI.M.ME. CONSORZIO PER LA RICERCA SULLA MICROELETTRONICA NEL MEZZOGIORNO

    发明人： Bruccoleri, Melchiorre ,  Cosentino, Gaetano ,  Demicheli, Marco ,  Pisati, Valerio

    IPC分类号： H03B1/00 ,  H03L7/099

    CPC分类号： H03L7/0805 ,  H03L7/099

    摘要： The system described comprises various circuit units (10, 11, 12) each having a capacitor (C0, C1, C2) and charging means (G0, G1, G2) for defining a quantity depending upon the ratio (I/C) between the charging current and the capacitance of the capacitors.
    In order to compensate automatically for deviations of the actual capacitances from the nominal capacitances due to fluctuations in the parameters of the integrated-circuit manufacturing process, the system has a phase-locked loop (PLL) which uses one (10) of the circuit units as an adjustable oscillator, and current transducer means (17) which regulate the charging currents of the capacitors (C1, C2) of the circuit units (11, 12) in dependence on the regulated charging current of the capacitor (C0) of the oscillator (10) or the error current of the PLL loop.

    摘要翻译： 所描述的系统包括各种电路单元（10，11，12），每个具有一个电容器（C0，C1，C2）和用于在所述之间的比率（I / C）定义的量DEPENDING充电装置（G0，G1，G2） 充电电流和电容器的电容。 为了由于在集成电路制造工艺的参数的波动自动为从标称电容的实际电容的偏差进行补偿，该系统具有电路单元的锁相环（PLL），其使用（10）之一 作为可调振荡器，和电流传感器装置（17）从而调节电容器的电路单元的充电电流（C1，C2）（11，12）在根据所述振荡器的电容器的调节充电电流（C0） （10）或者PLL环路的误差电流。

    Circuit for automatically regulating the gain of a differential amplifier
    5.
    发明公开
    Circuit for automatically regulating the gain of a differential amplifier 失效
    Schaltung zum automatischen Regulieren derVerstärkungeinesDifferenzverstärkers

    公开(公告)号：EP0763887A1

    公开(公告)日：1997-03-19

    申请号：EP95830377.8

    申请日：1995-09-14

    申请人： SGS-THOMSON MICROELECTRONICS S.r.l. ,  CO.RI.M.ME. CONSORZIO PER LA RICERCA SULLA MICROELETTRONICA NEL MEZZOGIORNO

    发明人： Bruccoleri, Melchiorre ,  Demicheli, Davide ,  Demicheli, Marco ,  Patti, Giuseppe

    IPC分类号： H03G1/00 ,  H03G3/20 ,  G11B5/02

    CPC分类号： H03G3/3026 ,  G11B5/02 ,  H03G1/0088

    摘要： The circuit described comprises a double half-wave rectifier (DHWR) connected to the outputs of the differential amplifier (VGA) in order to produce two quantities dependent on the amplitudes of the half-waves of the output signal of the amplifier (VGA), two comparators (COMP1, COMP2) each having an input (IN+1, IN+2) connected to an output (OUT1, OUT2) of the rectifier (DHWR) and a reference input (IN-1, IN-2) in order to produce respective output signals when the amplitudes of the respective half-waves are greater than the levels applied to the reference inputs (IN-1, IN-2), and processing means (Str1, A1, R1, Str2, A2, R2, C) for generating a signal for regulating the gain of the amplifier in dependence on the durations of the output signals of the two comparators.
    The circuit may advantageously be used when the signal to be amplified (v+, v-) is not symmetrical.

    摘要翻译： 所描述的电路包括连接到差分放大器（VGA）的输出的双半波整流器（DHWR），以便产生取决于放大器（VGA）的输出信号的半波幅度的两个量， 每个具有连接到整流器（DHWR）的输出（OUT1，OUT2）和参考输入（IN-1，IN-2）的输入（IN + 1，IN + 2））的两个比较器（COMP1，COMP2） 当各个半波的振幅大于施加到参考输入（IN-1，IN-2）的电平时，产生相应的输出信号，并且处理装置（Str1，A1，R1，Str2，A2，R2， C），用于根据两个比较器的输出信号的持续时间产生用于调节放大器的增益的信号。 当待放大的信号（v +，v-）不对称时，可以有利地使用该电路。

    An amplifier with a low offset
    6.
    发明公开
    An amplifier with a low offset 失效
    EinVerstärkermit Niedrigem Offset

    公开(公告)号：EP0786858A1

    公开(公告)日：1997-07-30

    申请号：EP96830035.0

    申请日：1996-01-26

    申请人： SGS-THOMSON MICROELECTRONICS s.r.l. ,  CO.RI.M.ME. CONSORZIO PER LA RICERCA SULLA MICROELETTRONICA NEL MEZZOGIORNO

    发明人： Alini, Roberto ,  Bruccoleri, Melchiorre ,  Cosentino, Gaetano ,  Pisati, Valerio

    IPC分类号： H03F1/00 ,  H03F3/30

    CPC分类号： H03F3/3077

    摘要： The amplifier described has an output stage constituted by an npn transistor (Q1) and a pnp transistor (Q2) in a push-pull arrangement, and a driver stage. The latter comprises a current-mirror circuit having, in its input branch, a pnp transistor (Q3) in series with a first constant-current generator (G1) and, in its output branch, an npn transistor (Q4), and two complementary transistors (Q5 and Q6) of which the collectors are connected together to the output terminal (OUT) and the bases are connected together to the input terminal (IN) of the amplifier. The emitter of the pnp transistor (Q5) of the driver stage is connected to the positive terminal (vdd) of the supply by means of a second constant-current generator (G2) and to the base of the npn transistor (Q1) of the output stage, and the emitter of the npn transistor (Q6) of the driver stage is connected to the negative terminal (gnd) of the supply by means of the npn transistor (Q4) of the output branch of the current-mirror circuit and to the base of the pnp transistor (Q2) of the output stage.
    The amplifier has a very low or zero offset ( Vos = Vout-Vin ).

    摘要翻译： 所描述的放大器具有由推挽装置中的npn晶体管（Q1）和pnp晶体管（Q2）和驱动器级构成的输出级。 后者包括电流镜电路，其在其输入支路中具有与第一恒定电流发生器（G1）串联的pnp晶体管（Q3），并且在其输出支路中具有npn晶体管（Q4）和两个互补的 集电极一起连接到输出端（OUT）的晶体管（Q5和Q6）和基极连接在放大器的输入端（IN）上。 驱动级的pnp晶体管（Q5）的发射极通过第二恒流发生器（G2）连接到电源的正端子（vdd），并连接到电源的npn晶体管（Q1）的基极 输出级，并且驱动级的npn晶体管（Q6）的发射极通过电流镜电路的输出支路的npn晶体管（Q4）连接到电源的负极（gnd），并且 输出级的pnp晶体管（Q2）的基极。 放大器具有非常低或零偏移（Vos = Vout-Vin）。

    Circuit device for realising a non-linear reactive elements scale network
    7.
    发明公开
    Circuit device for realising a non-linear reactive elements scale network 有权
    Sch en en ung ung ur en en iven iven iven iven iven iven iven iven iven iven iven iven iven iven iven iven iven

    公开(公告)号：EP1424773A1

    公开(公告)日：2004-06-02

    申请号：EP02425734.7

    申请日：2002-11-28

    申请人： STMicroelectronics S.r.l.

    发明人： Radice, Francesco ,  Bruccoleri, Melchiorre

    IPC分类号： H03H11/04 ,  H03H11/48

    CPC分类号： H03H11/0405 ,  H03H11/481

    摘要： The invention relates to a circuit device (1) for realising a non-linear reactive elements scale network, wherein the non-linear elements of the network are pairs of inductive (L) and capacitive (C) components cascade connected between a pair of input terminals and a pair of output terminals. Advantageously in the invention, each component (L,C) of the network is formed by cascade connecting a first (2) and a second (3) transconductance (Gm1,Gm2) integrator with each other.

    摘要翻译： 本发明涉及一种用于实现非线性无功元素规模网络的电路设备（1），其中网络的非线性元件是级联的电感（L）和电容（C）组件之间的对，所述电感（L）和电容（C） 端子和一对输出端子。 在本发明中有利的是，通过将第一（2）和第二（3）跨导（Gm1，Gm2）积分器彼此级联连接来形成网络的每个部件（L，C）。

    An oscillator with a low supply voltage
    10.
    发明公开
    An oscillator with a low supply voltage 失效
    Verszungsspannung的OszillatorfürBetrieb mit niedriger

    公开(公告)号：EP0887936A1

    公开(公告)日：1998-12-30

    申请号：EP97830295.8

    申请日：1997-06-24

    申请人： STMicroelectronics S.r.l.

    发明人： Celant, Luca ,  Demicheli, Marco ,  Bruccoleri, Melchiorre ,  Rigazio, Luca

    IPC分类号： H03L1/00 ,  H03K3/0231

    CPC分类号： H03K3/2821 ,  H03K3/0231

    摘要： The controllable-frequency oscillator described is of the astable multivibrator type with two transistors (Q1, Q2) coupled to one another by means of a capacitor (C) and a positive-feedback circuit. In order to reduce the supply voltage of the oscillator to the minimum, the positive-feedback circuit is constituted by a differential amplifier (T3, T4, R3, R4 and G5).

    摘要翻译： 所描述的可控频率振荡器是具有通过电容器（C）和正反馈电路彼此耦合的两个晶体管（Q1，Q2）的不稳定的多谐振荡器类型。 为了将振荡器的电源电压降至最低，正反馈电路由差分放大器（T3，T4，R3，R4和G5）构成。