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    • 6. 发明授权
    • Bipolar MOS logic circuit and semiconductor integrated circuit
    • 双极MOS逻辑电路和半导体集成电路
    • US5057713A
    • 1991-10-15
    • US486419
    • 1990-02-28
    • Masahiro IwamuraAkira Ide
    • Masahiro IwamuraAkira Ide
    • H03K17/04H03K17/567H03K19/00H03K19/013H03K19/08H03K19/0944
    • H03K19/09448H03K19/001H03K19/0136
    • An invention is disclosed, which is suitable for operating a bipolar-MOS logic circuit, and in particular Bi-CMOS logic circuit with a low power supply voltage below 5V, e.g. around 3V. According to the present logic circuit, since the base current of a second NPN transistor is supplied from a power supply through a PMOS transistor (first current switching means), the impedance of which is lowered previously by a logic inverting means and an NMOS logic circuit (second current switching means), which is on/off controlled by an input signal, in a transient logic level transition period where the output is switched from the level "1" to "0" (i.e. it falls), it is possible to supply a sufficient base current to the second NPN. In this way, it is possible to turn-on the second NPN with a high speed and to pull down to the level "0" with high speed. Further, since the PMOS is switched off owing to the action of the logic inverting means just after having allowed a sufficient base current flow therethrough, the current path, through which the base current of the second NPN is supplied, is stopped and thus DC power consumption is elimated.
    • 公开了一种适用于操作双极MOS逻辑电路的发明,特别是具有低于5V的低电源电压的Bi-CMOS逻辑电路,例如, 3V左右 根据本逻辑电路,由于第二NPN晶体管的基极电流通过PMOS晶体管(第一电流开关装置)从电源提供,其阻抗先前由逻辑反相装置和NMOS逻辑电路 (第二电流切换装置),其在输出从电平“1”切换到“0”的瞬态逻辑电平转换周期(即,其下降)中,其由输入信号控制的开/关控制, 向第二NPN提供足够的基极电流。 以这种方式,可以高速打开第二个NPN并以高速下拉到“0”电平。 此外,由于刚刚在允许足够的基极电流流动之后由于逻辑反相装置的作用使PMOS截止,所以提供第二NPN的基极电流的电流通路被停止,因此直流电力 消费被淘汰。
    • 9. 发明授权
    • Magnetic-field-angle measurement apparatus and rotational-angle measurement apparatus using same
    • 磁场角测量装置和使用其的旋转角度测量装置
    • US09506997B2
    • 2016-11-29
    • US13697690
    • 2010-05-14
    • Mutsumi SuzukiHiroshi IwasawaMasahiro Iwamura
    • Mutsumi SuzukiHiroshi IwasawaMasahiro Iwamura
    • G01R33/09G11C7/06H01L43/08
    • In a magnetic-field angle detection device and a rotation angle detection device in which the accuracy of the measured angle is not degraded even if the MR ratio of the tunneling magnetoresistance element is increased. In a magnetic-field-angle measurement apparatus including a magnetic-field-angle detection circuit and a magnetic sensor having a tunneling magnetoresistance element with a pinned magnetic layer, the magnetic-field-angle detection circuit has a power-supply unit that outputs a constant voltage as a bias voltage to the tunneling magnetoresistance element of the magnetic sensor and a current-detection unit that detects an output current of the tunneling magnetoresistance element. The accuracy of the measured angle of the magnetic-field angle detection device and the rotation angle detection device is improved by measuring the tunneling magnetoresistance element current while maintaining the terminal voltage of the tunneling magnetoresistance element constant with input impedance of the current-detection unit as zero.
    • 在磁场角检测装置和旋转角度检测装置中,即使隧道磁阻元件的MR比增加,测量角度的精度也不会降低。 在包括磁场角检测电路的磁场角测量装置和具有钉扎磁性层的隧道磁阻元件的磁传感器中,磁场角检测电路具有电源单元,其输出 恒定电压作为磁传感器的隧道磁阻元件的偏置电压,以及电流检测单元,其检测隧道磁阻元件的输出电流。 通过测量隧道磁阻元件电流来改善磁场角检测装置和旋转角度检测装置的测量角度的精度,同时保持隧道磁阻元件的端电压恒定,电流检测单元的输入阻抗为 零。