公开(公告)号：US20070253120A1

公开(公告)日：2007-11-01

申请号：US11737379

申请日：2007-04-19

申请人： Yoshiaki Saito ,  Hideyuki Sugiyama ,  Tomoaki Inokuchi

发明人： Yoshiaki Saito ,  Hideyuki Sugiyama ,  Tomoaki Inokuchi

IPC分类号： G11B5/33

CPC分类号： G11C11/16 ,  B82Y25/00 ,  G01R33/093 ,  H01F10/132 ,  H01F10/3204 ,  H01F10/3254 ,  H01F10/3272 ,  H01F10/329 ,  H01L27/228 ,  H01L43/08

摘要： It is possible to provide a magnetoresistive effect element which has thermal stability even if it is made fine and in which the magnetization in the magnetic recording layer can be inverted at a low current density. A magnetoresistive effect element includes: a magnetization pinned layer having a magnetization pinned in a direction; a magnetization free layer of which magnetization direction is changeable by injecting spin-polarized electrons into the magnetization free layer; a tunnel barrier layer provided between the magnetization pinned layer and the magnetization free layer; a first antiferromagnetic layer provided on the opposite side of the magnetization pinned layer from the tunnel barrier layer; and a second antiferromagnetic layer which is provided on the opposite side of the magnetization free layer from the tunnel barrier layer and which is thinner in thickness than the first antiferromagnetic layer.

摘要翻译： 可以提供一种具有热稳定性的磁阻效应元件，即使其变细，并且磁记录层中的磁化可以以低电流密度反转。 磁阻效应元件包括：具有沿方向固定的磁化的磁化固定层; 通过将自旋极化电子注入到磁化自由层中，磁化方向可变化的磁化自由层; 设置在磁化固定层和磁化自由层之间的隧道势垒层; 第一反铁磁层，设置在与所述隧道势垒层的所述磁化被钉扎层的相对侧上; 以及第二反铁磁层，其设置在所述磁化自由层的与所述隧道势垒层相反的一侧，并且其厚度比所述第一反铁磁性层更薄。

公开(公告)号：US20130076550A1

公开(公告)日：2013-03-28

申请号：US13536085

申请日：2012-06-28

申请人： Takao MARUKAME ,  Tetsufumi Tanamoto ,  Atsuhiro Kinoshita ,  Tomoaki Inokuchi ,  Masamichi Suzuki ,  Yoshiaki Saito

发明人： Takao MARUKAME ,  Tetsufumi Tanamoto ,  Atsuhiro Kinoshita ,  Tomoaki Inokuchi ,  Masamichi Suzuki ,  Yoshiaki Saito

IPC分类号： H03M1/34

CPC分类号： H03M1/1061 ,  H01L27/22 ,  H01L43/08 ,  H03M1/365

摘要： According to an embodiment, an analog-to-digital converter includes a voltage generating unit, and a plurality of comparators. The voltage generating unit is configured to divide a reference voltage by a plurality of variable resistors to generate a plurality of comparative voltages. Each of the plurality of comparator is configured to compare any one of the plurality of comparative voltages with an analog input voltage and output a digital signal based on a result of a comparison between the comparative voltage and the analog input voltage. Each of the plurality of variable resistors includes a plurality of variable resistive elements that are connected in series, and each of the plurality of variable resistive elements has a resistance value that is variably set according to an external signal.

摘要翻译： 根据实施例，模数转换器包括电压产生单元和多个比较器。 电压产生单元被配置为通过多个可变电阻器分压参考电压以产生多个比较电压。 多个比较器中的每一个被配置为将多个比较电压中的任何一个与模拟输入电压进行比较，并且基于比较电压和模拟输入电压之间的比较结果输出数字信号。 多个可变电阻器中的每一个包括串联连接的多个可变电阻元件，并且多个可变电阻元件中的每一个具有根据外部信号可变地设置的电阻值。

公开(公告)号：US20130076551A1

公开(公告)日：2013-03-28

申请号：US13535118

申请日：2012-06-27

申请人： Takao MARUKAME ,  Tetsufumi Tanamoto ,  Atsuhiro Kinoshita ,  Tomoaki Inokuchi ,  Masamichi Suzuki ,  Yoshiaki Saito

发明人： Takao MARUKAME ,  Tetsufumi Tanamoto ,  Atsuhiro Kinoshita ,  Tomoaki Inokuchi ,  Masamichi Suzuki ,  Yoshiaki Saito

IPC分类号： H03M1/36

CPC分类号： H03M1/1061 ,  H03F3/45183 ,  H03F2203/45391 ,  H03F2203/45392 ,  H03F2203/45674 ,  H03K5/2481 ,  H03M1/365

摘要： According to an embodiment, an analog-to-digital converter includes a voltage generating unit to generate comparative voltages; and comparators. Each comparator compares any one of the comparative voltages with an analog input voltage and output a digital signal. Each comparator includes a differential pair circuit to detect a potential difference between two inputs. The differential pair circuit includes first and second circuit portions. The first circuit portion includes a first transistor having a gate to which one input is supplied; and a resistor connected in series with the first transistor. The second circuit portion includes a second transistor having a gate to which the other input is supplied and forms a differential pair with the first transistor; and a variable resistor connected in series with the second transistor. The variable resistor includes variable resistive elements each having a resistance value variably set according to a control signal.

摘要翻译： 根据实施例，模数转换器包括产生比较电压的电压产生单元; 和比较者。 每个比较器将比较电压中的任何一个与模拟输入电压进行比较，并输出数字信号。 每个比较器包括用于检测两个输入之间的电位差的差分对电路。 差分对电路包括第一和第二电路部分。 第一电路部分包括具有一个输入端的栅极的第一晶体管; 以及与第一晶体管串联连接的电阻器。 第二电路部分包括第二晶体管，其具有提供另一输入的栅极，并与第一晶体管形成差分对; 以及与第二晶体管串联连接的可变电阻器。 可变电阻器包括可变电阻元件，每个电阻元件具有根据控制信号可变地设置的电阻值。

公开(公告)号：US08681034B2

公开(公告)日：2014-03-25

申请号：US13536085

申请日：2012-06-28

申请人： Takao Marukame ,  Tetsufumi Tanamoto ,  Atsuhiro Kinoshita ,  Tomoaki Inokuchi ,  Masamichi Suzuki ,  Yoshiaki Saito

发明人： Takao Marukame ,  Tetsufumi Tanamoto ,  Atsuhiro Kinoshita ,  Tomoaki Inokuchi ,  Masamichi Suzuki ,  Yoshiaki Saito

IPC分类号： H03M1/34

CPC分类号： H03M1/1061 ,  H01L27/22 ,  H01L43/08 ,  H03M1/365

摘要： According to an embodiment, an analog-to-digital converter includes a voltage generating unit, and a plurality of comparators. The voltage generating unit is configured to divide a reference voltage by a plurality of variable resistors to generate a plurality of comparative voltages. Each of the plurality of comparator is configured to compare any one of the plurality of comparative voltages with an analog input voltage and output a digital signal based on a result of a comparison between the comparative voltage and the analog input voltage. Each of the plurality of variable resistors includes a plurality of variable resistive elements that are connected in series, and each of the plurality of variable resistive elements has a resistance value that is variably set according to an external signal.

摘要翻译： 根据实施例，模数转换器包括电压产生单元和多个比较器。 电压产生单元被配置为通过多个可变电阻器分压参考电压以产生多个比较电压。 多个比较器中的每一个被配置为将多个比较电压中的任何一个与模拟输入电压进行比较，并且基于比较电压和模拟输入电压之间的比较结果输出数字信号。 多个可变电阻器中的每一个包括串联连接的多个可变电阻元件，并且多个可变电阻元件中的每一个具有根据外部信号可变地设置的电阻值。

公开(公告)号：US08681033B2

公开(公告)日：2014-03-25

申请号：US13535118

申请日：2012-06-27

申请人： Takao Marukame ,  Tetsufumi Tanamoto ,  Atsuhiro Kinoshita ,  Tomoaki Inokuchi ,  Masamichi Suzuki ,  Yoshiaki Saito

发明人： Takao Marukame ,  Tetsufumi Tanamoto ,  Atsuhiro Kinoshita ,  Tomoaki Inokuchi ,  Masamichi Suzuki ,  Yoshiaki Saito

IPC分类号： H03M1/34

CPC分类号： H03M1/1061 ,  H03F3/45183 ,  H03F2203/45391 ,  H03F2203/45392 ,  H03F2203/45674 ,  H03K5/2481 ,  H03M1/365

摘要： According to an embodiment, an analog-to-digital converter includes a voltage generating unit to generate comparative voltages; and comparators. Each comparator compares any one of the comparative voltages with an analog input voltage and output a digital signal. Each comparator includes a differential pair circuit to detect a potential difference between two inputs. The differential pair circuit includes first and second circuit portions. The first circuit portion includes a first transistor having a gate to which one input is supplied; and a resistor connected in series with the first transistor. The second circuit portion includes a second transistor having a gate to which the other input is supplied and forms a differential pair with the first transistor; and a variable resistor connected in series with the second transistor. The variable resistor includes variable resistive elements each having a resistance value variably set according to a control signal.

摘要翻译： 根据实施例，模数转换器包括产生比较电压的电压产生单元; 和比较者。 每个比较器将比较电压中的任何一个与模拟输入电压进行比较，并输出数字信号。 每个比较器包括用于检测两个输入之间的电位差的差分对电路。 差分对电路包括第一和第二电路部分。 第一电路部分包括具有一个输入端的栅极的第一晶体管; 以及与第一晶体管串联连接的电阻器。 第二电路部分包括第二晶体管，其具有提供另一输入的栅极，并与第一晶体管形成差分对; 以及与第二晶体管串联连接的可变电阻器。 可变电阻器包括可变电阻元件，每个电阻元件具有根据控制信号可变地设置的电阻值。