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    • 2. 发明专利
    • Integrated circuit device, and electronic device
    • 集成电路设备和电子设备
    • JP2009200809A
    • 2009-09-03
    • JP2008040264
    • 2008-02-21
    • Seiko Epson Corpセイコーエプソン株式会社
    • FUKUZAWA AKIHIROITO SATORUIMAI NOBUYUKI
    • H03M1/12H03F3/34H03G3/20H03G3/30H03H17/00H03H19/00H03M1/14
    • H03G5/24H03H19/004
    • PROBLEM TO BE SOLVED: To provide an integrated circuit device capable of achieving A/D conversion corresponding to various input signals of different frequency bands, amplitudes and DC offsets etc., and to provide an electronic device including the same. SOLUTION: The integrated circuit device includes: and amplifier circuit 10 to which input signals VI are inputted and which performs offset adjustment corresponding to the DC offset of the input signals CI and gain adjustment corresponding to the amplitude of the input signals VI; a filter 38 which is provided on the rear stage side of the amplifier circuit 10, and to which a cutoff frequency is variably set corresponding to the frequency band of the input signals VI; an A/D converter 50 which is provided on the rear stage side of the filter 38 and performs A/D conversion to the signals amplified by the amplifier circuit 10; and a control circuit 70 which performs the setting of the offset adjustment in the amplifier circuit 10, the setting of the gain adjustment in the amplifier circuit 10 and the setting of the cutoff frequency in the filter 38. COPYRIGHT: (C)2009,JPO&INPIT
    • 要解决的问题:提供一种能够实现与不同频带,幅度和DC偏移等的各种输入信号相对应的A / D转换的集成电路器件,并提供包括该A / D转换的电子器件。 集成电路装置包括:和放大器电路10,输入信号VI被输入到该放大器电路10中,并执行对应于输入信号CI的DC偏移的偏移调整和对应于输入信号VI的幅度的增益调整; 滤波器38,其设置在放大器电路10的后级侧,并且对应于输入信号VI的频带可变地设定截止频率; A / D转换器50,其设置在滤波器38的后级侧,对由放大电路10放大的信号进行A / D转换; 以及控制电路70,其执行放大器电路10中的偏移调整的设置,放大器电路10中的增益调整的设置以及滤波器38中的截止频率的设置。(C) 2009年,JPO&INPIT
    • 4. 发明专利
    • D/a conversion circuit and semiconductor integrated circuit using same
    • 使用相同的D / A转换电路和半导体集成电路
    • JP2005065084A
    • 2005-03-10
    • JP2003295133
    • 2003-08-19
    • Seiko Epson Corpセイコーエプソン株式会社
    • FUKUZAWA AKIHIRO
    • H03M1/08H03M1/74
    • PROBLEM TO BE SOLVED: To provide a D/A conversion circuit capable of reducing glitch.
      SOLUTION: The D/A conversion circuit is equipped with current cells C
      1 to C
      n which output a predetermined current according to digital signals and resistors R1, R2, and outputs potential of a connection point between the current cells C
      1 to C
      n and the resistors R1, R2. Each of the current cells C
      1 to C
      n is equipped with a differential signal output circuit 11, a constant current output circuit 12, resistors R3, R4 connected with the constant current output circuit 12, respectively, a transistor QP1 of which the source to drain path is connected between the resistors R3 and R1 and to the gate of which one of differential signals is supplied, and a transistor QP2 of which the source to drain path is connected between the resistors R4 and R2 and to the gate of which the other of the differential signals is supplied.
      COPYRIGHT: (C)2005,JPO&NCIPI
    • 要解决的问题:提供能够减少毛刺的D / A转换电路。 解决方案:D / A转换电路配有根据数字信号和电阻器R1,R2输出预定电流的电流单元C 1 至C n 并且将当前单元C 1至SB SB之间的连接点的电位输出到电阻器R1,R2。 当前单元C 1 至C n 中的每一个都配备有差分信号输出电路11,恒流输出电路12,与恒定电流连接的电阻器R3,R4 输出电路12分别将源极 - 漏极路径连接在电阻器R3和R1之间的晶体管QP1和提供差分信号之一的栅极和源极 - 漏极路径连接的晶体管QP2 在电阻器R4和R2之间以及提供另一个差分信号的栅极之间。 版权所有(C)2005,JPO&NCIPI
    • 7. 发明专利
    • Integrated circuit device, and electronic instrument
    • 集成电路设备和电子仪器
    • JP2009200797A
    • 2009-09-03
    • JP2008040161
    • 2008-02-21
    • Seiko Epson Corpセイコーエプソン株式会社
    • FUKUZAWA AKIHIROITO SATORUIMAI NOBUYUKI
    • H03F3/34H03F3/68H03M1/12
    • H03F3/45475G01D3/022H03F3/45977H03F2203/45138H03F2203/45212H03F2203/45522H03G3/30
    • PROBLEM TO BE SOLVED: To provide an integrated circuit device capable of achieving offset adjustment or the like with high precision while suppressing an increase in a circuit scale, and to provide an electronic instrument. SOLUTION: The integrated circuit device has an amplifying circuit 10 having cascade-connected first to N-th amplifiers AM1 to AM3 and to which an input signal is input, an A/D converter 50 which performs A/D conversion to the signal amplified by the amplifying circuit 10, first to N-th D/A converters DAC1 to DAC3 provided correspondingly to the first to N-th amplifiers AM1 to AM3 and making offset adjustments of the first to N-th amplifiers AM1 to AM3, and a control circuit 70 which makes settings for the offset adjustments and gain adjustments of the first to N-th amplifiers AM1 to AM3 using the first to N-th D/A converters DAC1 to DAC3. COPYRIGHT: (C)2009,JPO&INPIT
    • 要解决的问题:提供一种能够在抑制电路规模的增加的同时以高精度实现偏移调整等的集成电路装置,并提供电子仪器。 解决方案:集成电路器件具有放大电路10,其具有级联的第一至第N放大器AM1至AM3,并输入输入信号; A / D转换器50,其执行A / D转换 由放大电路10放大的信号,与第一至第N放大器AM1至AM3对应地设置的第一至第N D / A转换器DAC1至DAC3,并进行第一至第N放大器AM1至AM3的偏移调整,以及 使用第一至第N个D / A转换器DAC1至DAC3对第一至第N放大器AM1至AM3的偏移调整和增益调整进行设置的控制电路70。 版权所有(C)2009,JPO&INPIT
    • 8. 发明专利
    • Driving device, physical quantity measuring device, and electronic device
    • 驱动装置,物理量测量装置和电子装置
    • JP2008122366A
    • 2008-05-29
    • JP2007239568
    • 2007-09-14
    • Seiko Epson Corpセイコーエプソン株式会社
    • KANAI MASAHIROOTSUKA EITAROYOSHIDA NAOKIFUKUZAWA AKIHIRO
    • G01C19/56G01C19/5776
    • G01P15/097G01C19/5649
    • PROBLEM TO BE SOLVED: To provide a drive device capable of preventing breakdown of oscillators, as well as, shortening the warm-up time of oscillation, without causing circuit dimensions to increase, and to provide a physical quantity measuring device and an electronic device that use the device. SOLUTION: The oscillation drive circuit 10 includes a gain control amplifier 20 that controls the oscillation amplitude in an oscillation loop for exciting the drive oscillation to an oscillator 12, and a comparator 50 that forms a reference signal for synchronous detection, based on the signal inside the oscillation loop. The oscillation drive circuit 10 uses the output from the comparator 50, to excite the gain in the oscillation loop generated by the oscillator 12 and the comparator 50, in a state of being larger than 1, followed by controlling of the oscillation amplitude in the oscillation loop, generated from the oscillator 12 and the gain control amplifier 20 to excite the drive oscillation to the oscillator 12. The comparator 50 includes output current-limiting function. COPYRIGHT: (C)2008,JPO&INPIT
    • 要解决的问题:提供一种能够防止振荡器故障的驱动装置,以及缩短振荡的预热时间,而不会导致电路尺寸增加,并且提供物理量测量装置和 使用该设备的电子设备。 解决方案:振荡驱动电路10包括:增益控制放大器20,其控制用于激励振荡器12的驱动振荡的振荡回路中的振荡幅度;以及基于同步检测的基准信号形成的比较器50,基于 振荡回路内的信号。 振荡驱动电路10使用比较器50的输出,在大于1的状态下激发由振荡器12和比较器50产生的振荡环路中的增益,然后控制振荡中的振荡幅度 从振荡器12和增益控制放大器20产生的振荡器,以激励到振荡器12的驱动振荡。比较器50包括输出限流功能。 版权所有(C)2008,JPO&INPIT
    • 9. 发明专利
    • Drive unit, physical quantity measuring apparatus, and electronic apparatus
    • 驱动单元,物理量测量装置和电子装置
    • JP2008089577A
    • 2008-04-17
    • JP2007216101
    • 2007-08-22
    • Seiko Epson Corpセイコーエプソン株式会社
    • KANAI MASAHIROOTSUKA EITAROYOSHIDA NAOKIFUKUZAWA AKIHIRO
    • G01C19/56G01P9/04
    • G01C19/56H01L41/042H01L41/1132H03B5/36
    • PROBLEM TO BE SOLVED: To provide a drive unit capable of preventing the destruction of oscillators and shortening the oscillation starting time with as small circuit scale as possible, and provide a physical quantity measuring apparatus and an electronic apparatus using the same. SOLUTION: An oscillation drive circuit 10 includes both a current-voltage converter 30 for converting a current value of an oscillation signal in an oscillation loop into a voltage value and a comparator 50 for outputting a signal corresponding to a comparison result between an output signal of the current-voltage converter 30 and a prescribed reference signal. The comparator 50 has a current restricting function. The oscillation drive circuit 10 excites driving oscillations at an oscillator 12 on the basis of output of the comparator 50. COPYRIGHT: (C)2008,JPO&INPIT
    • 要解决的问题:提供一种能够以尽可能小的电路规模防止振荡器破坏和缩短振荡开始时间的驱动单元,并且提供使用该驱动单元的物理量测量装置和电子设备。 解决方案:振荡驱动电路10包括用于将振荡回路中的振荡信号的电流值转换为电压值的电流 - 电压转换器30和用于输出对应于比较结果的信号的比较器50 电流 - 电压转换器30的输出信号和规定的参考信号。 比较器50具有电流限制功能。 振荡驱动电路10根据比较器50的输出激励振荡器12的驱动振荡。版权所有(C)2008,JPO&INPIT
    • 10. 发明专利
    • D/a conversion circuit and semiconductor integrated circuit using the same
    • 使用它的D / A转换电路和半导体集成电路
    • JP2005072794A
    • 2005-03-17
    • JP2003297759
    • 2003-08-21
    • Seiko Epson Corpセイコーエプソン株式会社
    • FUKUZAWA AKIHIRO
    • H03M1/74
    • PROBLEM TO BE SOLVED: To widen a range where an output signal changes.
      SOLUTION: A D/A conversion circuit comprises current cells C
      n -C
      1 for outputting a specified current according to a digital signal; and resistors R1, R2. The D/A conversion circuit outputs the potential of the connection point between the current cells C
      n -C
      1 and the resistors R1, R2. Each of the current cells C
      n -C
      1 comprises a flip-flop FF1; a differential amplification circuit 14 that is operated according to the difference of two output signals of the flip-flop FF1; offset circuits 15, 16 for adding an offset to the two output signals of the differential amplification circuit 14 for outputting; a constant-current output circuit 12; and a switch circuit 13 for outputting current outputted by the constant current output circuit 12 according to the output signal of the offset circuits 15, 16 to the resistor R1 or R2.
      COPYRIGHT: (C)2005,JPO&NCIPI
    • 要解决的问题:扩大输出信号变化的范围。 解决方案:D / A转换电路包括用于根据数字信号输出指定电流的电流单元C -C 1 和电阻R1,R2。 D / A转换电路输出当前单元C -C 1 和电阻R1,R2之间的连接点的电位。 当前单元中的每一个都包括触发器FF1; 根据触发器FF1的两个输出信号的差动作的差分放大电路14; 偏移电路15,16,用于向差分放大电路14的两个输出信号添加偏移量以进行输出; 恒流输出电路12; 以及用于根据偏移电路15,16的输出信号将电流输出电路12输出的电流输出到电阻器R1或R2的开关电路13。 版权所有(C)2005,JPO&NCIPI