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公开(公告)号：US07778785B2
公开(公告)日：2010-08-17
申请号：US12030879
申请日：2008-02-14
IPC分类号： G01R29/26
CPC分类号： H04B17/336
摘要： There is provided a measuring apparatus for measuring a signal-to-noise ratio of a discrete waveform which is output from an AD converter in response to an input signal, where the signal-to-noise ratio indicates a ratio of a signal component of the input signal to noise generated by the AD converter. The measuring apparatus includes a spectrum compensating section that receives a spectrum of the discrete waveform output from the AD converter, and compensates the received spectrum in accordance with a non-symmetric sideband between an upper sideband and a lower sideband of the received spectrum, where the upper and lower sidebands are defined with respect to a fundamental frequency of the input signal, and a phase noise waveform calculating section that calculates a phase noise waveform of the discrete waveform based on the spectrum which has been compensated by the spectrum compensating section.
摘要翻译： 提供了一种测量装置，用于测量响应于输入信号从AD转换器输出的离散波形的信噪比，其中信噪比表示信号噪声比的信号分量 输入信号由AD转换器产生的噪声。 测量装置包括频谱补偿部分，其接收从AD转换器输出的离散波形的频谱，并根据接收频谱的上边带和下边带之间的非对称边带补偿接收的频谱，其中 相对于输入信号的基频定义上下边带;以及相位噪声波形计算部，其基于由频谱补偿部补偿的频谱，计算离散波形的相位噪声波形。
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公开(公告)号：US20120146416A1
公开(公告)日：2012-06-14
申请号：US13311356
申请日：2011-12-05
IPC分类号： H02J1/10
CPC分类号： G01R31/31924 , Y10T307/505
摘要： A DUT comprises a notifying circuit configured to generate a notification signal which is used to notify an external circuit of an event that leads to a change in the operating current of the DUT before such an event occurs. A main power supply supplies electric power to a power supply terminal of the DUT. A power supply compensation circuit comprises a switch element which is controlled according to a control signal, and is configured to generate a compensation pulse current according to the on/off state of the switch element. A compensation control circuit receives the notification signal from the DUT, and outputs, to the power supply compensation circuit, a control signal which is used to control the switch element, and which is generated based upon at least the notification signal.
摘要翻译： DUT包括通知电路，其被配置为产生通知信号，该通知信号用于在事件发生之前通知外部电路导致DUT的工作电流变化的事件。 主电源向DUT的电源端供电。 电源补偿电路包括根据控制信号控制的开关元件，并且被配置为根据开关元件的接通/断开状态产生补偿脉冲电流。 补偿控制电路接收来自DUT的通知信号，并且向电源补偿电路输出用于控制开关元件的控制信号，并且至少基于通知信号生成控制信号。
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公开(公告)号：US20120112783A1
公开(公告)日：2012-05-10
申请号：US13287950
申请日：2011-11-02
IPC分类号： G01R31/26
CPC分类号： G01R31/318511 , G01R31/31721 , G11C29/56004 , G11C2029/5602
摘要： A test apparatus tests a DUT formed on a wafer. A power supply compensation circuit includes source and a sink switches each controlled according to a control signal. When the source or sink switch is turned on, a compensation pulse current is generated, and the compensation pulse current is injected into a power supply terminal of the DUT via a path that differs from that of a main power supply, or is drawn from the power supply current that flows from the main power supply to the DUT via a path that differs from that of the power supply terminal of the DUT. Of components forming the power supply compensation circuit, including the source and sink switches, a part is formed on the wafer. Pads are formed on the wafer in order to apply a signal to such a part of the power supply compensation circuit formed on the wafer.
摘要翻译： 测试设备测试在晶片上形成的DUT。 电源补偿电路包括根据控制信号控制的源和宿开关。 当源极或吸收开关导通时，产生补偿脉冲电流，并且补偿脉冲电流通过与主电源的路径不同的路径注入DUT的电源端子，或者从 通过不同于DUT的电源端子的路径从主电源流向DUT的电源电流。 构成电源补偿电路的部件，包括源极和漏极开关，在晶片上形成一部分。 在晶片上形成衬垫以便向形成在晶片上的电源补偿电路的这一部分施加信号。
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公开(公告)号：US08068047B2
公开(公告)日：2011-11-29
申请号：US12687525
申请日：2010-01-14
IPC分类号： H03M1/12
CPC分类号： H03M1/0604 , H03M1/0682 , H03M1/468 , H03M1/804
摘要： Provided is an AD conversion apparatus including: a differential amplifier that generates a differential input voltage according to an analog input signal; a differential DA converter of a charge redistribution type, which outputs a differential output voltage resulting from subtracting the differential input voltage from a differential comparison voltage that is in accordance with comparison data; a comparator that compares a positive output voltage and a negative output voltage in the differential output voltage; a control section that identifies the comparison data at which the differential output voltage becomes substantially 0 based on a comparison result of the comparator, and outputs the identified comparison data as output data; and a setting section that sets at least one of a common potential of the differential amplifier and a common potential of the differential DA converter, according to a targeted value of a common potential of the comparator
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公开(公告)号：US07342524B2
公开(公告)日：2008-03-11
申请号：US11442884
申请日：2006-05-30
申请人： Masayuki Kawabata
发明人： Masayuki Kawabata
IPC分类号： H03M1/10
CPC分类号： H03K4/08
摘要： There is provided a waveform generator that generates a waveform. The waveform generator includes: a lamp waveform generating section that generates a lamp wave of which a signal value linearly changes for a predetermined period; a square wave generating section that generates a square wave of which pulse width is generally equivalent to the predetermined period; a waveform adding section that generally accords a timing at which a signal value in the lamp wave begins to be changed and a timing at a leading edge of the square wave, to add the lamp wave and the square wave; and a low-pass filter that removes a predetermined frequency band component from a waveform output from the waveform adding section.
摘要翻译： 提供了一个产生波形的波形发生器。 波形发生器包括：灯波形生成部，其生成信号值线性变化了规定期间的灯波; 方波生成部，其生成脉冲宽度大致等于规定期间的方波; 波形加法部分通常符合灯波中的信号值开始改变的定时和方波前缘的定时，以增加灯波和方波; 以及从波形加法部分输出的波形中去除预定频带分量的低通滤波器。
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6.发明授权Arbitrary waveform generator, arbitrary waveform generate method, testing apparatus, and program 有权任意波形发生器，任意波形生成方法，测试仪器和程序公开(公告)号：US07348913B2
公开(公告)日：2008-03-25
申请号：US11443684
申请日：2006-05-31
申请人： Masayuki Kawabata
发明人： Masayuki Kawabata
IPC分类号： H03M1/76
CPC分类号： H03M1/1071 , G06F1/0321
摘要： There is provided an arbitrary waveform generator that generates an arbitrary waveform. The arbitrary waveform generator includes a waveform pattern generating section that generates pattern data showing a pattern of the arbitrary waveform, a digital-analog converting section that outputs the arbitrary waveform based on the pattern data, and a correction processing section that corrects the pattern data and inputs the corrected data into the digital-analog converting section based on a value made by differentiating the pattern data and a time constant of a path through which the arbitrary waveform output from the digital-analog converting section passes.
摘要翻译： 提供产生任意波形的任意波形发生器。 任意波形发生器包括产生表示任意波形图案的图形数据的波形图形生成部，基于图形数据输出任意波形的数模转换部，以及修正图案数据的校正处理部， 基于通过区分图案数据和通过数字 - 模拟转换部输出的任意波形通过的路径的时间常数，将校正后的数据输入到数模转换部。
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7.发明申请Waveform input circuit, waveform observation unit and semiconductor test apparatus 失效波形输入电路，波形观察单元和半导体测试仪公开(公告)号：US20070268012A1
公开(公告)日：2007-11-22
申请号：US11368208
申请日：2006-03-03
申请人： Masayuki Kawabata
发明人： Masayuki Kawabata
IPC分类号： G01R19/18
CPC分类号： G01R31/31926 , G01R31/31924
摘要： An output waveform of a device under test with high output impedance and low load driving capability is faithfully observed. A waveform input circuit 10 comprises a high input impedance terminating resistance which receives an input signal from a transmission line 11, selection means (relay) 12 which selects any one of this terminating resistance and other terminating resistances, and an input buffer 13 which is connected when the high input impedance terminating resistance is selected in the selection means 12, wherein switch means 16 is provided to switch the reference potential of the transmission line 11 to at least two kinds of reference potentials, and one reference potential which is switched by the switch means 16 is “a potential controlled to be in phase with the input signal by an output voltage of the input buffer 13 which is connected when the high input impedance terminating resistance is selected in the selection means 12”.
摘要翻译： 忠实地观察到具有高输出阻抗和低负载驱动能力的被测器件的输出波形。 波形输入电路10包括接收来自传输线11的输入信号的高输入阻抗终端电阻，选择该终端电阻和其它终端电阻中的任何一个的选择装置（继电器）12以及连接的输入缓冲器13 当在选择装置12中选择高输入阻抗终端电阻时，其中提供开关装置16以将传输线11的基准电位切换到至少两种参考电位，以及由开关切换的一个参考电位 装置16是“当在选择装置12”中选择高输入阻抗终端电阻时连接的输入缓冲器13的输出电压被控制为与输入信号同相的电位。
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公开(公告)号：US06404371B2
公开(公告)日：2002-06-11
申请号：US09801787
申请日：2001-03-09
IPC分类号： H03M166
CPC分类号： G01R31/2841 , G06F1/022
摘要： A waveform generator 30 for generating a desired waveform includes a plurality of rectangular wave generators (40a to 40n) for generating a plurality of rectangular waves and a waveform synthesizing unit 42 for synthesizing the rectangular waves to generate a multi-level synthesized wave, and generate the desired wave based on the synthesized wave.
摘要翻译： 用于产生期望波形的波形发生器30包括用于产生多个矩形波的多个矩形波发生器（40a至40n）和用于合成矩形波以产生多电平合成波的波形合成单元42，并产生 基于合成波的期望波。
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公开(公告)号：US07982520B2
公开(公告)日：2011-07-19
申请号：US12642706
申请日：2009-12-18
IPC分类号： H03L5/00
摘要： Provided is a signal generating apparatus that outputs from an output end thereof an output voltage corresponding to input data supplied thereto, comprising: a DA converter that outputs a voltage corresponding to data supplied thereto; a capacitor section that is provided between the output end and a standard potential; a transmission switch that provides a connection or a disconnect between a voltage generating end of the DA converter and the output end; and a control section that causes the DA converter to charge the capacitor section with a voltage corresponding to the input data by repeatedly connecting and disconnecting the transmission switch, thereby causing the voltage of the capacitor section to gradually approach the output voltage corresponding to the input data.
摘要翻译： 提供一种信号发生装置，从其输出端输出与提供给其的输入数据相对应的输出电压，包括：DA转换器，输出与提供给其的数据相对应的电压; 电容器部分，其设置在输出端和标准电位之间; 传输开关，其提供DA转换器的电压产生端与输出端之间的连接或断开; 以及控制部，其使得DA转换器通过重复地连接和断开所述传输开关而对与所述输入数据相对应的电压对所述电容器部分充电，从而使所述电容器部分的电压逐渐接近与所述输入数据相对应的输出电压 。
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10.发明授权Waveform input circuit, waveform observation unit and semiconductor test apparatus 失效波形输入电路，波形观察单元和半导体测试仪公开(公告)号：US07634370B2
公开(公告)日：2009-12-15
申请号：US11368208
申请日：2006-03-03
申请人： Masayuki Kawabata
发明人： Masayuki Kawabata
IPC分类号： G01R31/02
CPC分类号： G01R31/31926 , G01R31/31924
摘要： A waveform input circuit, waveform observation unit and semiconductor test apparatus allow to faithfully observe waveform of a device under test with high output impedance and low load driving capability. A waveform input circuit includes a high input impedance terminating resistance which receives an input signal from a transmission line, a relay which selects a terminating resistance, an input buffer which is connected when the high input impedance terminating resistance is selected. A reference potential switch is further provided to select a reference potential of the transmission line where one reference potential is controlled to be in phase with the input signal by an input buffer which is connected when the high input impedance terminating resistance is selected.
摘要翻译： 波形输入电路，波形观察单元和半导体测试装置允许忠实地观察被测器件的波形，具有高输出阻抗和低负载驱动能力。 波形输入电路包括接收来自传输线的输入信号的高输入阻抗终端电阻，选择终端电阻的继电器，当选择高输入阻抗终端电阻时连接的输入缓冲器。 还提供参考电位开关，用于选择一个参考电位的参考电位，其中一个参考电位被控制为与当输入高阻抗终端电阻被选择时连接的输入缓冲器与输入信号同相。
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