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    Passive amplification circuit and analog-digital converter
    3.
    发明专利
    Passive amplification circuit and analog-digital converter 审中-公开
    被动放大电路和模拟数字转换器

    公开(公告)号：JP2014161005A

    公开(公告)日：2014-09-04

    申请号：JP2013259954

    申请日：2013-12-17

    申请人： Renesas Electronics Corp ,  ルネサスエレクトロニクス株式会社

    发明人： OSHIMA TAKASHI ,  OKUDA YUICHI ,  NAKANE HIDEO ,  YAMAMOTO TAKAYA ,  KIMURA KEISUKE ,  MATSUURA TATSUJI

    IPC分类号： H03F3/70 ,  H03F3/45 ,  H03M1/12 ,  H03M1/38

    CPC分类号： H03M1/1009 ,  G11C27/02 ,  H03F1/02 ,  H03F1/3211 ,  H03F3/005 ,  H03F3/45071 ,  H03F3/45475 ,  H03F2203/45171 ,  H03F2203/45544 ,  H03H7/004 ,  H03M1/002 ,  H03M1/124 ,  H03M1/38 ,  H03M1/44

    摘要： PROBLEM TO BE SOLVED: To provide a passive amplification circuit that, in amplifying differential signals, amplifies only the differential signals without requiring any reference of common mode voltage, and provide a successive approximation analog-digital converter that has effective resolution improved by one bit.SOLUTION: Differential signals are amplified by the passive amplification circuit dispensing with a reference of common mode voltage, and voltages of input signals are passively amplified twofold before a successive approximation analog-digital conversion operation is performed. The passive amplification is implemented by a plurality of capacitive elements for sampling whose connection relationships are changed with switches. This can halve an effect of comparator noise without adding to power consumption and chip size, to whereby increase effective resolution by one bit.

    摘要翻译： 要解决的问题：提供一种无源放大电路，其在放大差分信号中仅放大差分信号，而不需要任何共模电压的参考，并且提供具有改善了一位的有效分辨率的逐次逼近模数转换器。 解决方案：差分信号由无源放大电路放大，分配共模电压参考，输入信号的电压在进行逐次逼近模数转换操作之前被无源放大两倍。 无源放大由用于采样的多个电容元件实现，其连接关系随开关变化。 这可以减少比较器噪声的影响，而不增加功耗和芯片尺寸，从而将有效分辨率提高一位。

    Solid-state imaging apparatus
    6.
    发明专利
    Solid-state imaging apparatus 有权
    固态成像装置

    公开(公告)号：JP2013085105A

    公开(公告)日：2013-05-09

    申请号：JP2011223309

    申请日：2011-10-07

    申请人： Canon Inc ,  キヤノン株式会社

    发明人： MAEHASHI YU ,  HIYAMA TAKUMI ,  ITANO TETSUYA ,  SAITO KAZUHIRO ,  NAKAMURA KOICHI

    IPC分类号： H04N5/378 ,  H01L27/146 ,  H03M1/56

    CPC分类号： H03F3/45475 ,  H03F2200/78 ,  H03F2203/45512 ,  H03F2203/45544

    摘要： PROBLEM TO BE SOLVED: To provide a solid-state imaging apparatus for enabling AD conversion with sufficient AD conversion accuracy even if a capacity feedback-type amplifier is used for generation of a lamp signal.SOLUTION: A solid-state imaging apparatus includes: a plurality of pixels which are two-dimensionally arranged; amplifier circuits which are arranged for each column and amplify signals from the pixels; a reference signal generation circuit for generating a lamp signal; and an AD conversion circuit for AD-converting the signal from the pixel by using the lamp signal and output from the amplifier circuit. In a capacity feedback-type amplifier which the amplifier circuit has and a capacity feedback-type amplifier which the reference signal generation circuit has, feedback capacities of the same structures are used and connection relations between the feedback capacities and amplifiers are made equal. Voltage dependency of capacitances of the respective feedback capacities of the amplifier circuit and the reference signal generation circuit are made equal to improve AD conversion accuracy.

    摘要翻译： 要解决的问题：即使使用电容反馈型放大器来产生灯信号，也提供一种使AD转换具有足够的AD转换精度的固态成像装置。 解决方案：固态成像装置包括：二维排列的多个像素; 放大器电路，其布置用于每列，并放大来自像素的信号; 用于产生灯信号的参考信号产生电路; 以及AD转换电路，用于通过使用灯信号对来自像素的信号进行AD转换并从放大器电路输出。 在放大器电路具有的容量反馈型放大器和参考信号发生电路所具有的电容反馈型放大器中，使用相同结构的反馈电容，使反馈电容和放大器之间的连接关系相等。 使放大器电路和参考信号发生电路的各个反馈电容的电容的电压依赖性相等以提高AD转换精度。 版权所有（C）2013，JPO＆INPIT

    Fully-differential amplifier circuit
    8.
    发明专利
    Fully-differential amplifier circuit 有权
    全差分放大器电路

    公开(公告)号：JP2010288266A

    公开(公告)日：2010-12-24

    申请号：JP2010099067

    申请日：2010-04-22

    申请人： Canon Inc ,  キヤノン株式会社

    发明人： ISODA NAOKI

    IPC分类号： H03F3/45

    CPC分类号： H03F3/45183 ,  H03F3/3022 ,  H03F3/45645 ,  H03F2203/30015 ,  H03F2203/45134 ,  H03F2203/45404 ,  H03F2203/45421 ,  H03F2203/45422 ,  H03F2203/45512 ,  H03F2203/45514 ,  H03F2203/45534 ,  H03F2203/45544 ,  H03F2203/45551 ,  H03F2203/45616 ,  H03F2203/45626 ,  H03F2203/45702

    摘要： PROBLEM TO BE SOLVED: To reduce power consumption in performing common mode feedback operation in a fully-differential amplifier circuit.
    SOLUTION: The fully-differential amplifier circuit includes: a differential amplifier configured to differentially amplify first and second input signals forming an input differential pair to generate first and second intermediate signals forming a pair; and first and second class AB amplifiers configured to amplify the first and second intermediate signals to generate first and second output signals, respectively. The first and second output signals form an output differential pair, the first class AB amplifier amplifies the first intermediate signal based on a reference voltage adjusted by a first feedback signal that is a common mode component of the first output signal and the second output signal. The second class AB amplifier amplifies the second intermediate signal based on a reference voltage adjusted by a second feedback signal that is a common mode component of the first output signal and the second output signal.
    COPYRIGHT: (C)2011,JPO&INPIT

    摘要翻译： 要解决的问题：为了降低在全差分放大器电路中执行共模反馈操作的功耗。 解决方案：全差分放大器电路包括：差分放大器，被配置为差分放大形成输入差分对的第一和第二输入信号，以产生形成一对的第一和第二中间信号; 以及配置成放大第一和第二中间信号以分别产生第一和第二输出信号的第一和第二AB类放大器。 第一和第二输出信号形成输出差分对，第一类AB放大器基于由作为第一输出信号和第二输出信号的共模分量的第一反馈信号调整的参考电压放大第一中间信号。 第二类AB放大器基于由作为第一输出信号和第二输出信号的共模分量的第二反馈信号调整的参考电压放大第二中间信号。 版权所有（C）2011，JPO＆INPIT