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    • 4. 发明公开
    • Voltage regulating circuit for a capacitive load
    • Spannungsreglerfüreine kapazitive最后
    • EP1065580A1
    • 2001-01-03
    • EP99830418.2
    • 1999-06-30
    • STMicroelectronics S.r.l.
    • Khouri, OsamaMicheloni, RinoMotta, IlariaTorelli, Guido
    • G05F3/02G05F1/56G05F3/26H02J7/16
    • G05F3/242
    • A voltage regulating circuit for a capacitive load, being connected between first and second terminals of a supply voltage generator (VDD,GND) and having an input terminal (IN) and an output terminal (OUT), comprises an operational amplifier (OP) having an inverting (-) input terminal connected to the input terminal (IN) of the regulating circuit and a non-inverting (+) input terminal connected to an intermediate node of a voltage divider (R1,R2) which is connected between an output node connected to the output terminal (OUT) of the regulating circuit and the second terminal (GND) of the supply voltage generator, and having an output terminal connected, for driving a first field-effect transistor (MPU), between the output node and the first terminal (VDD) of the supply voltage generator, the output terminal of the operational amplifier being further connected to the output node through a compensation network (COMP), and comprises a second field-effect transistor (MPD1) connected between the output node and the second terminal of the supply voltage generator (GND) and having its gate terminal connected to a constant voltage generating circuit means (RB,CB,MB,IB).
    • 一种用于电容性负载的电压调节电路,连接在电源电压发生器(VDD,GND)的第一和第二端子之间并具有输入端(IN)和输出端(OUT),包括运算放大器(OP),其具有 连接到调节电路的输入端子(IN)的反相( - )输入端子和连接到分压器(R1,R2)的中间节点的非反相(+)输入端子,其连接在输出节点 连接到调节电路的输出端子(OUT)和电源电压发生器的第二端子(GND),并且具有用于驱动第一场效应晶体管(MPU)的输出端子连接在输出节点和 电源电压发生器的第一端子(VDD),运算放大器的输出端子通过补偿网络(COMP)进一步连接到输出节点,并且包括一个与之相连的第二场效应晶体管(MPD1) 在电源电压发生器(GND)的输出节点和第二端子上,并且其栅极端子连接到恒定电压发生电路装置(RB,CB,MB,IB)。
    • 8. 发明公开
    • A/D conversion method in high density multilevel non-volatile memory devices and corresponding converter device
    • 在非易失性更通常高密度存储器和相关联的换能器为模拟/数字转换的方法
    • EP1211812A2
    • 2002-06-05
    • EP00127649.2
    • 2000-11-23
    • STMicroelectronics S.r.l.
    • Micheloni, RinoKhouri, OsamaPierin, AndreaGregori, StefanoTorelli, Guido
    • H03M1/14
    • G11C11/56G11C27/005H03M1/146H03M1/361
    • The invention relates to an analog-to-digital conversion method and relevant device, in high-density multilevel non-volatile memory devices. The method applies to multilevel memory cells comprising a floating gate transistor with drain and source terminals; the cell to be read is subjected to a reading operation by applying predetermined bias voltage values to its drain and source terminals, while to its drain terminal is applied a predetermined current value (Iref), and by measuring the value of its gate voltage (Vg).
      The method of the invention comprises a first conversion phase the most significant bits (MSB) contained in the memory cell, followed by a second conversion phase of the least significant bits (LSB).
      The first step is completed within a time gap (T1-T0) which corresponds to the rise transient of the gate voltage signal (Vg), while the second step is started at the end of the transient.
    • 本发明涉及到模拟 - 数字转换方法和相关的设备,在高密度的多级非易失性存储器装置。 该方法适用于多级存储器单元包括具有漏极和源极端子的浮栅晶体管; 要读出的单元是通过,施加预定的偏置电压值到它的漏极和源极端,而其漏极端子施加规定的电流值(Iref的)经受读取操作,并通过测量其栅极电压的值(Vg的 )。 本发明的方法包括包含在所述存储器单元中的最显著位(MSB)的第一转化阶段,接着是至少显著位的第二阶段的转换(LSB)。 第一个步骤是一个时间间隙(T1-T0),其对应于栅极电压信号(VG)的上升瞬变内完成,而第二个步骤是在瞬变结束启动。