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    • 1. 发明授权
    • Line driver with current source output and high immunity to RF signals
    • 具有电流源输出的线路驱动器和对RF信号的高抗扰度
    • US06949963B2
    • 2005-09-27
    • US10095348
    • 2002-03-11
    • Clemens Gerhardus Johannes De HaasHendrik BoezenAloysius Johannes Maria BoomkampGerrit Jan BollenAbraham Klaas Van Den HeuvelRuurd Anne Visser
    • Clemens Gerhardus Johannes De HaasHendrik BoezenAloysius Johannes Maria BoomkampGerrit Jan BollenAbraham Klaas Van Den HeuvelRuurd Anne Visser
    • H03K17/16H03K17/687H03K19/0175H04L25/02H03K3/00
    • H04L25/028
    • Line driver for a LIN-bus. The line driver has a current source output transistor (T1) for pulling down the LIN-bus wire (LB) to ground (GND). The LIN-bus wire (LB) is connected to a positive supply voltage (VBAT) through a pull-up resistor (R1). The output transistor (T1) is driven by a driver stage (DRV) in response to an input current (J1) at an input node (X). The driver stage has a further resistor (R2) connected between the gate of the output transistor (T1) and a reference terminal (GND), a reference transistor (T2) which has its source connected to the reference terminal (GND) and its drain coupled to the input node (X); the gates of the output transistor (T1) and the reference transistor (T2) are connected to an output (DAO1) of a differential amplifier (DA1) which has an inverting input (DAN1) coupled to a bias voltage source (E2) and a non-inverting input (DAP1) coupled to the input node (X). The further resistor (R2) stage provides a low-impedance path to ground for RF disturbances reaching the gate of the output transistor (T1) through the drain-gate capacitance of the output transistor (T1) and prevents these disturbances from penetrating the driver stage.
    • 用于LIN总线的线路驱动器。 线路驱动器具有用于将LIN总线(LB)拉到地(GND)的电流源输出晶体管(T 1)。 LIN总线(LB)通过上拉电阻(R 1)连接到正电源电压(VBAT)。 响应于输入节点(X)处的输入电流(J 1),输出晶体管(T 1)由驱动级(DRV)驱动。 驱动级具有连接在输出晶体管(T 1)的栅极和参考端子(GND)之间的另一个电阻器(R 2),其源极连接到参考端子(GND)的参考晶体管(T 2) 并且其漏极耦合到输入节点(X); 输出晶体管(T 1)和参考晶体管(T 2)的栅极连接到差分放大器(DA 1)的输出(DAO 1),差分放大器(DA 1)具有耦合到偏置电压源 (E 2)和耦合到输入节点(X)的非反相输入(DAP 1)。 另外的电阻器(R 2)级通过输出晶体管(T 1)的漏极 - 栅极电容为RF输入端到达输出晶体管(T 1)的栅极提供了一个低阻抗路径,并防止这些干扰穿透 司机舞台。
    • 6. 发明授权
    • MOS switching circuit
    • MOS开关电路
    • US07482860B2
    • 2009-01-27
    • US10586507
    • 2004-12-30
    • Clemens Gerhardus Johannes De Haas
    • Clemens Gerhardus Johannes De Haas
    • H03K17/72
    • H03K17/063H03K17/6872
    • An electronic circuit has a signal conductor (11), a power supply reference conductor (10) connected by a switching circuit. The switching circuit contains a PMOS transistor (17) and an NMOS transistor realized on a common substrate (100). The NMOS transistor (17) has a source coupled to the power supply reference conductor (10). The NMOS transistor (18) has a source coupled to the drain of the PMOS transistor (17), and a drain coupled to the signal conductor (11). A control circuit (13, 14, 15, 16) switches between an “on” state and an “off” state, in which the control circuit (13, 14, 15, 16) controls the gate source voltages of the first and second MOS transistor (17, 18) to make channels of these MOS transistors (17, 18) conductive and not to make the channels of these first and second transistors (17, 18) conductive respectively. Preferably a complementary switching circuit is also provided. The complementary switching circuit uses opposite polarity voltage differences, an NMOS transistor (27) coupled to a second power supply and a PMOS transistor (28) coupled to a signal conductor. The on resistances of the switching circuits are matched by matching the NMOS gate-source voltages, as well as the PMOS gate source voltages.
    • 电子电路具有由切换电路连接的信号导体(11),电源基准导体(10)。 开关电路包括PMOS晶体管(17)和在公共衬底(100)上实现的NMOS晶体管。 NMOS晶体管(17)具有耦合到电源参考导体(10)的源极。 NMOS晶体管(18)具有耦合到PMOS晶体管(17)的漏极的源极和耦合到信号导体(11)的漏极。 控制电路(13,14,15,16)在“开”状态和“关”状态之间切换,其中控制电路(13,14,15,16)控制第一和第二 MOS晶体管(17,18),以使这些MOS晶体管(17,18)的沟道导通,并且不使这些第一和第二晶体管(17,18)的沟道分别导通。 优选还提供互补开关电路。 互补开关电路使用相反的极性电压差,耦合到第二电源的NMOS晶体管(27)和耦合到信号导体的PMOS晶体管(28)。 通过匹配NMOS栅极 - 源极电压以及PMOS栅极源极电压来匹配开关电路的导通电阻。
    • 7. 发明授权
    • Transition detection at input of integrated circuit device
    • 集成电路设备输入端的过渡检测
    • US07191348B2
    • 2007-03-13
    • US10525579
    • 2003-07-22
    • Clemens Gerhardus Johannes De HaasCecilius Gerardus KwakernaatStefan Gerhard Erich Butselaar
    • Clemens Gerhardus Johannes De HaasCecilius Gerardus KwakernaatStefan Gerhard Erich Butselaar
    • G06F1/26
    • G06F1/24H03K5/04H03K5/08H03K5/1252
    • An integrated circuit has an input connection for connecting an external signal conductor that passes signals to execute functions in the device. The external signal conductor can pick up strong interfering signals with high frequency content, for example when the device is used in a car. To protect against unintended execution of functions the device contains a timer circuit comprising a capacitance and a current supplying circuit coupled to an integration node. A discharge diode is coupled between the input connection and the integration node, with a polarity such that the discharge diode, when in forward bias, is capable of draining current from the current supplying circuit. A detector is coupled to the integration node for generating a signal to be supplied to the integrated circuit device to respond to a signal transition on the conductor. The diode serves to reset integration on the integration node before the detector detects the transition in case of short pulses. By using a diode instead of a switching transistor the circuit is more robust against the effect of interfering pulses.
    • 集成电路具有用于连接外部信号导体的输入连接,该外部信号导体通过信号以执行装置中的功能。 外部信号导体可以拾取高频内容的强干扰信号,例如当该装置用于汽车时。 为了防止意外执行功能,该设备包含定时器电路,该定时器电路包括耦合到集成节点的电容和电流供应电路。 放电二极管耦合在输入连接和积分节点之间,其极性使得放电二极管在正向偏压时能够从电流供应电路引出电流。 检测器耦合到积分节点,用于产生要提供给集成电路器件的信号以响应导体上的信号转变。 在检测器检测到短脉冲情况下的转换之前,二极管用于复位积分节点上的积分。 通过使用二极管代替开关晶体管,该电路相对于干扰脉冲的影响更为鲁棒。