公开(公告)号：US07400281B2

公开(公告)日：2008-07-15

申请号：US11681659

申请日：2007-03-02

Applicant: Roberto Versari ,  Massimiliano Mollichelli ,  Nicola Del Gatto ,  Nicola Rosito ,  Emanuele Confalonieri

Inventor： Roberto Versari ,  Massimiliano Mollichelli ,  Nicola Del Gatto ,  Nicola Rosito ,  Emanuele Confalonieri

IPC: H03M1/10

CPC classification number: H03M1/0607 ,  H03M1/785

Abstract: A regulator for a digital-to-analog converter having in input a digital signal and suitable for providing an analog signal in output, the regulator including at least one pair of buffers having in input the digital signal and the outputs connected to a pair of circuit branches connected to the output of the regulator; each of the at least two circuit branches having at least one resistance. To at least one of the at least one pair of buffers a variable resistance is associated, and the regulator includes a circuit having in input the analog signal and adapted for measuring its waveform and acting on the variable resistance in response to its possible anomalous waveform compared to a desired waveform.

Abstract translation: 一种用于数模转换器的调节器，其具有输入数字信号并且适于在输出中提供模拟信号，所述调节器包括至少一对缓冲器，所述至少一对缓冲器具有输入中的数字信号和连接到一对电路的输出 分支连接到调节器的输出端; 所述至少两个电路分支中的每一个具有至少一个电阻。 对于至少一对缓冲器中的至少一个，可变电阻相关联，并且调节器包括具有输入模拟信号并适于测量其波形的电路并且响应于其可能的异常波形而作用于可变电阻 到期望的波形。

公开(公告)号：US20070210949A1

公开(公告)日：2007-09-13

申请号：US11681659

申请日：2007-03-02

Applicant: Roberto Versari ,  Massimiliano Mollichelli ,  Nicola Del Gatto ,  Nicola Rosito ,  Emanuele Confalonieri

Inventor： Roberto Versari ,  Massimiliano Mollichelli ,  Nicola Del Gatto ,  Nicola Rosito ,  Emanuele Confalonieri

IPC: H03M1/66

CPC classification number: H03M1/0607 ,  H03M1/785

Abstract: A regulator for a digital-to-analog converter having in input a digital signal and suitable for providing an analog signal in output, the regulator including at least one pair of buffers having in input the digital signal and the outputs connected to a pair of circuit branches connected to the output of the regulator; each of the at least two circuit branches having at least one resistance. To at least one of the at least one pair of buffers a variable resistance is associated, and the regulator includes a circuit having in input the analog signal and adapted for measuring its waveform and acting on the variable resistance in response to its possible anomalous waveform compared to a desired waveform.

Abstract translation: 一种用于数模转换器的调节器，其具有输入数字信号并且适于在输出中提供模拟信号，所述调节器包括至少一对缓冲器，所述至少一对缓冲器具有输入中的数字信号和连接到一对电路的输出 分支连接到调节器的输出端; 所述至少两个电路分支中的每一个具有至少一个电阻。 对于至少一对缓冲器中的至少一个，可变电阻相关联，并且调节器包括具有输入模拟信号并适于测量其波形的电路并且响应于其可能的异常波形而作用于可变电阻 到期望的波形。

公开(公告)号：US07515493B2

公开(公告)日：2009-04-07

申请号：US11739167

申请日：2007-04-24

Applicant: Umberto Di Vincenzo ,  Roberto Versari ,  Massimiliano Mollichelli

Inventor： Umberto Di Vincenzo ,  Roberto Versari ,  Massimiliano Mollichelli

IPC: G11C7/02

CPC classification number: G11C16/26 ,  G11C7/067 ,  G11C7/12 ,  G11C16/24 ,  G11C16/28 ,  G11C2207/063

Abstract: A sensing circuit is provided. The sensing circuit is adapted to determine when a cell current flowing trough a selected memory cell exceeds a reference current during an evaluation phase of a sensing operation. The sensing circuit is adapted to be coupled to at least one selected memory cell through a respective bit line. The sensing circuit includes: an access circuit node adapted to be coupled to the bit line; precharging circuitry adapted to be activated in a precharge phase of the sensing operation preceding the evaluation phase, so as to bring a voltage of said access circuit node to a reference voltage; a reference circuit node coupled to the access circuit node and arranged to receive the reference current. The sensing circuit further includes an evaluation circuit node coupled to the reference circuit node through a first current to voltage converter, adapted to sink a current flowing from the reference circuit node to the evaluation circuit node and to produce a corresponding voltage difference between the reference circuit node and the evaluation circuit node, wherein the current is nearly equal to the reference current substantially at the end of the precharge phase; comparator circuitry is provided, adapted to compare the voltage of the access circuit node with the voltage of the evaluation circuit node and to provide a corresponding comparison signal whose time pattern indicates when the cell current exceeds the reference current. The first current to voltage converter is an electronic device having essentially the behavior of a diode.

Abstract translation: 提供感测电路。 感测电路适于确定在感测操作的评估阶段期间流过所选择的存储器单元的单元电流何时超过参考电流。 感测电路适于通过相应的位线耦合到至少一个选择的存储器单元。 感测电路包括：适于耦合到位线的接入电路节点; 预充电电路，其适于在所述评估阶段之前的所述感测操作的预充电阶段中被激活，以使所述访问电路节点的电压达到参考电压; 参考电路节点，其耦合到所述接入电路节点并被布置成接收所述参考电流。 感测电路还包括通过第一电流 - 电压转换器耦合到参考电路节点的评估电路节点，适于吸收从参考电路节点流向评估电路节点的电流，并产生参考电路之间的相应电压差 节点和评估电路节点，其中电流几乎等于基本上在预充电阶段结束时的参考电流; 提供比较器电路，用于将访问电路节点的电压与评估电路节点的电压进行比较，并提供对应的比较信号，其时间模式指示电池电流何时超过参考电流。 第一个电流到电压转换器是具有基本上二极管行为的电子器件。

公开(公告)号：US20070285999A1

公开(公告)日：2007-12-13

申请号：US11739167

申请日：2007-04-24

Applicant: Umberto Di Vincenzo ,  Roberto Versari ,  Massimiliano Mollichelli

Inventor： Umberto Di Vincenzo ,  Roberto Versari ,  Massimiliano Mollichelli

IPC: G11C5/14

CPC classification number: G11C16/26 ,  G11C7/067 ,  G11C7/12 ,  G11C16/24 ,  G11C16/28 ,  G11C2207/063

Abstract: A sensing circuit is provided. The sensing circuit is adapted to determine when a cell current flowing trough a selected memory cell exceeds a reference current during an evaluation phase of a sensing operation. The sensing circuit is adapted to be coupled to at least one selected memory cell through a respective bit line. The sensing circuit includes: an access circuit node adapted to be coupled to the bit line; precharging circuitry adapted to be activated in a precharge phase of the sensing operation preceding the evaluation phase, so as to bring a voltage of said access circuit node to a reference voltage; a reference circuit node coupled to the access circuit node and arranged to receive the reference current. The sensing circuit further includes an evaluation circuit node coupled to the reference circuit node through a first current to voltage converter, adapted to sink a current flowing from the reference circuit node to the evaluation circuit node and to produce a corresponding voltage difference between the reference circuit node and the evaluation circuit node, wherein the current is nearly equal to the reference current substantially at the end of the precharge phase; comparator circuitry is provided, adapted to compare the voltage of the access circuit node with the voltage of the evaluation circuit node and to provide a corresponding comparison signal whose time pattern indicates when the cell current exceeds the reference current. The first current to voltage converter is an electronic device having essentially the behavior of a diode.

Abstract translation: 提供感测电路。 感测电路适于确定在感测操作的评估阶段期间流过所选择的存储器单元的单元电流何时超过参考电流。 感测电路适于通过相应的位线耦合到至少一个选择的存储器单元。 感测电路包括：适于耦合到位线的接入电路节点; 预充电电路，其适于在所述评估阶段之前的所述感测操作的预充电阶段中被激活，以使所述访问电路节点的电压达到参考电压; 参考电路节点，其耦合到所述接入电路节点并被布置成接收所述参考电流。 感测电路还包括通过第一电流 - 电压转换器耦合到参考电路节点的评估电路节点，适于吸收从参考电路节点流向评估电路节点的电流，并产生参考电路之间的相应电压差 节点和评估电路节点，其中电流几乎等于基本上在预充电阶段结束时的参考电流; 提供比较器电路，用于将访问电路节点的电压与评估电路节点的电压进行比较，并提供对应的比较信号，其时间模式指示电池电流何时超过参考电流。 第一个电流到电压转换器是具有基本上二极管行为的电子器件。