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52 条记录 (耗时 0.014 秒)

    Replica network for linearizig switched capacitor circuits
    42.
    发明公开
    Replica network for linearizig switched capacitor circuits 有权
    Replikatornetzwerk用于线性化开关电容器电路

    公开(公告)号：EP1227589A3

    公开(公告)日：2003-09-03

    申请号：EP02250157.1

    申请日：2002-01-10

    申请人： Broadcom Corporation

    发明人： Gupta, Sandeep K.

    IPC分类号： H03K17/14 ,  H03H19/00

    CPC分类号： G06G7/1865 ,  G11C27/026 ,  H03H19/004 ,  H03K17/063 ,  H03K17/145

    摘要： The present invention relates to a replica network (400) for linearizing switched capacitor circuits. A bridge circuit (406) with a MOSFET resistor (424) disposed in a resistor branch of the bridge circuit is provided. A noninverting terminal of an operational amplifier (408) is connected to a first node (B) of the bridge circuit and an inverting terminal of the operational amplifier is connected to a second note (D) of the bridge circuit. The second node is separated from the first node by another node (C) of the bridge circuit. An output of the operational amplifier (408) is provided to a gate terminal of the MOSFET resistor (424) and to the gate terminal of the MOSFET switch (204) in a switched capacitor circuit, thereby controlling the resistance of the MOSFET switch so that it is independent of the signal voltage. In this manner, the replica network of the present invention linearizes the switched capacitor circuit. In this manner, the replica network of the present invention linearizes the switched capacitor circuit.

    INTEGRATOR TOPOLOGY
    43.
    发明公开
    INTEGRATOR TOPOLOGY 审中-公开
    积分电路地形

    公开(公告)号：EP1254423A2

    公开(公告)日：2002-11-06

    申请号：EP01909006.7

    申请日：2001-02-09

    申请人： PRESIDENT AND FELLOWS OF HARVARD COLLEGE

    发明人： DENISON, Timothy, J.

    IPC分类号： G06G7/186

    CPC分类号： G06G7/1865

    摘要： An apparatus includes a switching circuit, an integrator circuit having an input for receiving a first signal from the switching circuit, a sensing circuit having an input for receiving a second signal from the integrator circuit, and a control circuit having an input for receiving a third signal from the sensing circuit and an output for sending a fourth signal to the switching circuit. In certain applications, the integrator circuit includes a first integrator and a second integrator having an inverting terminal connected to an inverting terminal of the first integrator. The second integrator also includes a non-inverting terminal connected to an output of the first integrator through a first capacitor, and an output connected to a non-inverting terminal of the first integrator through a second capacitor.

    Improved method and circuit arrangement for signal processing
    47.
    发明公开
    Improved method and circuit arrangement for signal processing 审中-公开
    Verfahren und Schaltungsanordnung zur Signalverarbeitung

    公开(公告)号：EP1014288A1

    公开(公告)日：2000-06-28

    申请号：EP99310153.4

    申请日：1999-12-16

    申请人： NOKIA MOBILE PHONES LTD.

    发明人： Rapakko, Harri

    IPC分类号： G06G7/184

    CPC分类号： G06G7/1865 ,  G11C27/024

    摘要： The invention pertains to an improved method and circuit arrangement for signal processing. The invention is advantageously used for processing analog signals in applications in which low energy consumption is of the essence. An idea of the invention is to achieve an integrator topology where the active charge-transferring element is a preferably source-follower-type transistor in which one input terminal is arranged so as to be substantially independent of the input signal and in which the essential signal path elements of the circuit topology are connected in a fixed manner. The circuit arrangement according to the invention is realized preferably in such a manner that it comprises separate transistors for sampling and charge transfer. Thus it is possible to connect an input signal in a fixed manner to an input terminal of the sampling transistor, and an input terminal of the charge-transferring transistor can be connected in a fixed manner to a constant voltage. By using a signal processing circuit according to the invention it is possible to avoid circuit non-idealities caused by parasitic capacitances.

    摘要翻译： 本发明涉及用于信号处理的改进的方法和电路装置。 本发明有利地用于处理低能量消耗的应用中的模拟信号。 本发明的思想是实现积分器拓扑，其中有源电荷转移元件是优选的源极跟随器型晶体管，其中一个输入端子被布置为基本上独立于输入信号，并且其中基本信号 电路拓扑的路径元件以固定的方式连接。 根据本发明的电路装置优选地以这样的方式实现，即它包括用于采样和电荷转移的分离的晶体管。 因此，可以将输入信号以固定的方式连接到采样晶体管的输入端子，并且电荷转移晶体管的输入端子可以以固定的方式连接到恒定电压。 通过使用根据本发明的信号处理电路，可以避免由寄生电容引起的电路非理想性。

    Knock detection circuit
    49.
    发明公开
    Knock detection circuit 失效
    Klopfsensorschaltung。

    公开(公告)号：EP0271294A1

    公开(公告)日：1988-06-15

    申请号：EP87310683.5

    申请日：1987-12-04

    申请人： LUCAS INDUSTRIES public limited company

    发明人： Mainprize, David

    IPC分类号： G06G7/186 ,  F02P5/155

    CPC分类号： F02P5/152 ,  G06G7/1865 ,  Y02T10/46

    摘要： A rectifying and integrating circuit, particularly in a knock-detection system for an internal combustion engine, comprises an operational amplifier OA, an integrat­ing capacitor C2 with one side connected to the amplifier output and its other side connected to the signal input of the amplifier, a first rectifying device D2 connecting the amplifier output to the one side (i.e. output side) of the integrating capacitor, and a second rectifying device D1 connecting the amplifier output to its signal input. The signal input current is balanced by feedback through one or other of the two paths D2, C2 and D1, depending on the polarity of the input. Integration occurs on one polarity in the absence of a rectifier amplifier preceding a separate integrator, errors due to input offset voltages of the rectifier amplifier are avoided.

    摘要翻译： 特别是在用于内燃机的爆震检测系统中的整流和积分电路包括运算放大器OA，积分电容器C2，其一侧连接到放大器输出端，另一侧连接到放大器的信号输入端， 将放大器输出连接到积分电容器的一侧（即，输出侧）的第一整流装置D2和将放大器输出连接到其信号输入的第二整流装置D1。 根据输入的极性，信号输入电流通过两个路径D2，C2和D1中的一个或另一个的反馈平衡。 在单独的积分器之前没有整流放大器的情况下，在一个极性上产生积分，避免了由于整流放大器的输入失调电压引起的误差。