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    Resistance circuit, oscillation circuit, and in-vehicle sensor apparatus
    1.
    发明授权
    Resistance circuit, oscillation circuit, and in-vehicle sensor apparatus 有权

    公开(公告)号：US10720418B2

    公开(公告)日：2020-07-21

    申请号：US16495564

    申请日：2017-09-12

    Applicant: HITACHI AUTOMOTIVE SYSTEMS, LTD.

    Inventor： Yoshimitsu Yanagawa ,  Yoshikazu Nara ,  Masahiro Matsumoto ,  Hiroshi Nakano ,  Akira Kotabe

    IPC: H01L27/01 ,  H01L49/02 ,  H01L27/08 ,  H01L27/10 ,  H03K3/011 ,  H03K3/354 ,  H03K4/52 ,  H03B5/24

    Abstract: A resistance circuit is configured such that a P-type resistance section and an N-type resistance section are electrically connected in series, the P-type resistance section is configured with P-type diffusion layer resistance elements that are disposed to form a right angle with respect to each other and that are electrically connected in series, and the N-type resistance section is configured with N-type diffusion layer resistance elements that are disposed to form the right angle with respect to each other and that are electrically connected in series. Furthermore, the P-type diffusion layer resistance element is disposed along a orientation direction of a semiconductor substrate, and the N-type diffusion layer resistance element is disposed along a orientation direction of the semiconductor substrate. It is thereby possible to provide the resistance circuit, an oscillation circuit, and an in-vehicle sensor apparatus that reduce stress-induced characteristic fluctuations.

    Frequency-dividing circuit for signals of sawtooth waveform
    5.
    发明授权
    Frequency-dividing circuit for signals of sawtooth waveform 失效
    用于波形波形信号的频率分配电路

    公开(公告)号：US3628054A

    公开(公告)日：1971-12-14

    申请号：US3628054D

    申请日：1970-02-10

    Applicant: NIPPON MUSICAL INSTRUMENTS MFG

    Inventor： UCHIYAMA YASUJI

    IPC: G10H5/07 ,  H03B19/14 ,  H03K4/52 ,  H03K6/00 ,  H03K23/00 ,  H03K21/00

    CPC classification number: H03K4/52 ,  G10H5/07 ,  H03B19/14 ,  H03K6/00 ,  H03K23/00

    Abstract: A frequency-dividing circuit for signals of sawtooth waveform, comprising: a buffer transistor to the base of which an input sawtooth wave and an output square wave of a square-wave frequency divider are applied in their states of equal peak amplitude through mixing resistors having equal value, and a mixing circuit for obtaining an output of a frequency-divided sawtooth wave from the emitter of said buffer transistor, a compensating DC voltage being superposed at any point of the circuit so that the lower ends of the mixed signal appearing at said base are offset from said emitter potential by a voltage value which is greater than the forward voltage drop between the base and the emitter of the transistor thereby to cause said buffer transistor to perform a perfect class ''''A'''' amplifying operation. Furthermore, modifications of the circuits mentioned above are described.

    Abstract translation: 用于产生锯齿波的分频电路包括方波分频器和混频电路的至少一级。 接收到已知频率的锯齿波或方波作为触发输入信号，方波频率潜水员产生一半频率的方波。 该混合电路包括：用于混合原频率的锯齿波和相等峰值振幅的分频方波的电阻，从而产生一半频率的锯齿波; 用于将所得到的锯齿波提供给后续状态的射极跟随器类型的晶体管放大器; 以及用于将所得到的锯齿波提供给输出端的射极跟随器类型的另一晶体管放大器。

    Unity gain positive feedback integrator with programmable charging currents and polarities
    9.
    发明授权
    Unity gain positive feedback integrator with programmable charging currents and polarities 失效
    具有可编程充电电流和极性的Unity增益正反馈积分器

    公开(公告)号：US5498992A

    公开(公告)日：1996-03-12

    申请号：US358031

    申请日：1994-12-14

    Applicant: Benny W. H. Lai ,  Richard C. Walker

    Inventor： Benny W. H. Lai ,  Richard C. Walker

    IPC: G06G7/184 ,  H03K4/58 ,  H03K4/52 ,  H03K4/56

    CPC classification number: G06G7/184

    Abstract: An integrator includes a capacitor and a bootstrap circuit for detecting any leaking charge from the capacitor and replacing it. The integrator also includes a charge injection circuit for adjusting the charge applied to the capacitor in response to a digital control input to the charge injection circuit. The bootstrap circuit has two transistors to sense leaking charge, and two further transistors forming a differential pair. The bootstrap circuit uses positive feedback and unity gain to replenish the lost charge.

    Abstract translation: 积分器包括电容器和自举电路，用于检测来自电容器的任何泄漏电荷并将其替换。 积分器还包括一个充电注入电路，用于响应于对电荷注入电路的数字控制输入来调节施加到电容器的电荷。 自举电路具有两个用于检测泄漏电荷的晶体管，以及形成差分对的两个另外的晶体管。 自举电路使用正反馈和统一增益来补充丢失的电荷。

    Saw-tooth wave frequency divider circuit
    10.
    发明授权
    Saw-tooth wave frequency divider circuit 失效
    SAW波峰波分波器电路

    公开(公告)号：US3651337A

    公开(公告)日：1972-03-21

    申请号：US3651337D

    申请日：1970-06-02

    Applicant: NIPPON MUSICAL INSTRUMENTS MFG

    Inventor： TOMISAWA NORIO

    IPC: G10H5/07 ,  H03B19/14 ,  H03K4/52 ,  H03K6/00 ,  H03K23/00 ,  H03K21/00 ,  H03K3/12

    CPC classification number: H03K4/52 ,  G10H5/07 ,  H03B19/14 ,  H03K6/00 ,  H03K23/00

    Abstract: In frequency divider circuit for saw-tooth wave including a circuit for producing a saw-tooth wave of a frequency f, a circuit for producing a square wave having a frequency f/2, mixing resistors, and a buffer circuit for obtaining a desired output saw-tooth wave of frequency f/2; the peak amplitude of the square wave is so selected as to be greater than the peak amplitude of the saw-tooth wave of a frequency f before mixing, and the ratio of the resistances of the mixing resistors is so selected that the peak amplitudes of the square wave component and the saw-tooth wave component in the mixed resultant wave become equal after mixing, whereby the resultant saw-tooth wave of a frequency f/2 has an amplitude at least equal to that of the original saw-tooth wave of frequency f.

    Abstract translation: 在包括用于产生频率f的锯齿波的电路的锯齿波分频器电路中，用于产生具有频率f / 2的方波的电路，混合电阻器和用于获得期望输出的缓冲电路 频率f / 2的锯齿波; 方波的峰值振幅被选择为大于混合前频率f的锯齿波的峰值振幅，并且混合电阻器的电阻比被选择成使得峰值振幅 混合合成波中的方波分量和锯齿波分量在混合后变得相等，从而所得到的频率为f / 2的锯齿波的振幅至少等于原始锯齿波频率的振幅 F。

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