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71. 发明申请

WO0227942A2 INPUT VOLTAGE OFFSET CALIBRATION OF AN ANALOG DEVICE USING A MICROCONTROLLER 审中-公开
标题翻译：使用微控制器的模拟器件的输入电压偏移校准
公开(公告)号：WO0227942A2
公开(公告)日：2002-04-04
申请号：PCT/US0130585
申请日：2001-09-28
申请人： MICROCHIP TECH INC
发明人： DARMAWASKITA HARTONO , MORENO MIQUEL
IPC分类号： H03F3/45 , H03M1/10 , H03M1/12 , H03F1/30
CPC分类号： H03M1/1019 , H03F3/45977 , H03M1/12
摘要： Input offset voltage calibration of an analog device, or plurality of analog devices, is controlled by a microcontroller. The microcontroller and analog device(s) are fabricated on an integrated circuit die or in multi-chip package. The microcontroller applies a digital word to an input offset voltage compensation circuit of the analog device for generating input offset voltage compensation circuit of the analog device for generating input offset voltage compensation. The analog device is switched to a calibrate mode and a voltage comparator compares the output of the analog input device and a voltage reference. When the output of the analog input device is equal to or greater than the voltage reference, the comparator output signals the microcontroller by changing its output logic level. The input offset voltage compensation circuit of the analog input device has a storage register or memory that retains the digital word which compensates for the input device has a storage register or memory that retains the digital word which compensates for the input offset voltage.
摘要翻译：模拟设备或多个模拟设备的输入偏移电压校准由微控制器控制。微控制器和模拟设备在集成电路管芯上或多芯片封装中制造。微控制器将数字字应用于模拟装置的输入失调电压补偿电路，用于产生用于产生输入失调电压补偿的模拟装置的输入失调电压补偿电路。模拟设备切换到校准模式，电压比较器比较模拟输入设备的输出和电压参考。当模拟输入设备的输出等于或大于参考电压时，比较器输出通过改变其输出逻辑电平来发出信号。模拟输入装置的输入失调电压补偿电路具有保存数字字的存储寄存器或存储器，该数字字补偿输入装置具有保存数字字的存储寄存器或存储器，该存储寄存器或存储器补偿输入失调电压。

72. 发明申请

WO1992005629A1 NOISE CANCELING PHOTODETECTOR PREAMPLIFIER USEFUL FOR COMPUTERIZED TOMOGRAPHY 审中-公开
标题翻译：噪音消除光电子前置放大器用于计算机图像
公开(公告)号：WO1992005629A1
公开(公告)日：1992-04-02
申请号：PCT/US1991006571
申请日：1991-09-11
申请人： GENERAL ELECTRIC COMPANY
发明人： GENERAL ELECTRIC COMPANY , RIBNER, David, Byrd
IPC分类号： H03F03/45
CPC分类号： H03F1/303 , H03F3/087 , H03F3/45977 , H03F2200/261
摘要： A preamplifier interfaces low level current-mode signals, such as from a photodetector in a computerized tomography system, to corresponding voltage-mode signals, with a dynamic range on the order of 120 dB. The preamplifier can be implemented in CMOS technology to allow for complete integration of the computerized tomography interface function, including analog-to-digital conversion, of several channels in a single integrated circuit. The CMOS circuit accepts a current signal at its input and, after integration of the signal, produces a voltage output wherein the low frequency noise that is normally encountered with MOS transistors is cancelled through the use of correlated-double sampling. The circuit limits high frequency noise through use of low-pass filtering.

73. 发明申请

WO2019045817A1 PROGRAMMABLE GAIN AMPLIFIER 审中-公开
公开(公告)号：WO2019045817A1
公开(公告)日：2019-03-07
申请号：PCT/US2018/036042
申请日：2018-06-05
申请人： AUCMOS TECHNOLOGIES USA, INC.
发明人： LU, Teh-Shang
IPC分类号： H03F3/45
CPC分类号： H03G1/0088 , H03F3/45475 , H03F3/45977 , H03F2203/45022 , H03F2203/45044 , H03F2203/45522 , H03F2203/45528 , H03F2203/45534 , H03G3/001
摘要： A programmable gain amplifier may include: (a) a differential amplifier having first and second input terminals and first and second output terminals, the differential amplifier providing an output signal of the programmable gain amplifier across the first and second output terminals of the differential amplifier; (b) a first set of one or more resistors coupling the first output terminal of the differential amplifier to the first input terminal of the differential amplifier; (c) a second set of one or more resistors coupling the first input terminal of the differential amplifier to a first input terminal of the programmable gain amplifier; and (d) a first set of one or more switches each connected in parallel with one or more resistors in the first or second set of resistors. The first set of switches may include two or more individually programmable switches. Each of the switches may be implemented by an input-signal independent switch disclosed herein.

74. 发明申请

WO2011050973A1 CALIBRATION OF SIGNAL PROCESSING APPARATUS 审中-公开
标题翻译：信号处理设备的校准
公开(公告)号：WO2011050973A1
公开(公告)日：2011-05-05
申请号：PCT/EP2010/006618
申请日：2010-10-29
申请人： ST-ERICSSON SA , TENG, Robert Hwat Hian
发明人： TENG, Robert Hwat Hian
IPC分类号： H03F1/30 , H03F3/45
CPC分类号： H03F1/305 , H03F3/45977
摘要： A signal processing apparatus (200, 300) comprises a signal path including first and second signal processing stages (210, 220) for processing a signal. There is a switch means (260, 410a, 410b, 420a, 420b) for, in a first state, coupling an output of the first signal processing stage (210) to an input (222) of the second signal processing stage (220), and, in a second state, de-coupling- the output of the first signal processing stage (210) from the input (222) of the second signal processing stage (220). There is an auxiliary stage (230) coupled to the output of the first signal processing stage (210) and arranged to generate a control signal dependent on a DC level at the output of the first signal processing stage (210) and on a DC level in the auxiliary stage (230) and indicative of a DC offset at an output (224) of the second signal processing stage (220). There is a calibration means (240) for, responsive to the control signal, adjusting a DC level in the signal path at a location preceding the output of the first signal processing stage (210) when the switch means (260, 410a, 410b, 42Oa1 420b) is in the second state.
摘要翻译：信号处理装置（200,300）包括信号路径，该信号路径包括用于处理信号的第一和第二信号处理级（210,220）。在第一状态下，存在将第一信号处理级（210）的输出与第二信号处理级（220）的输入端（222）耦合的开关装置（260,410a，410b，420a，420b），并且在第二状态下，从第二信号处理级（220）的输入端（222）去耦合第一信号处理级（210）的输出。存在耦合到第一信号处理级（210）的输出的辅助级（230），并被布置成根据第一信号处理级（210）的输出处的直流电平和直流电平产生取决于直流电平的控制信号在辅助级（230）中并且指示在第二信号处理级（220）的输出端（224）处的DC偏移。存在一个校准装置（240），用于响应于控制信号，当开关装置（260,410a，410b，...）在第一信号处理级（210）的输出之前的位置处调整信号路径中的DC电平， 420a）处于第二状态。

75. 发明申请

WO2004043062A1 READ-OUT CIRCUIT FOR INFRARED DETECTORS. 审中-公开
标题翻译：红外探测器的读出电路。
公开(公告)号：WO2004043062A1
公开(公告)日：2004-05-21
申请号：PCT/BE2003/000187
申请日：2003-11-06
申请人： XENICS N.V. , VAN BOGGET, Urbain
发明人： VAN BOGGET, Urbain
IPC分类号： H04N5/33
CPC分类号： H04N5/3651 , H03F3/087 , H03F3/45977 , H03F2200/261 , H04N5/33
摘要： The present invention is related to a device comprising a capacitive feedback transimpedance operational amplifier (11), that comprises a main operational amplifier (107) (with a first input (121), a second input (122) and an output (125)) and an integrating capacitor (106), connected between the second input and the output, and a first switch (105) connected in parallel to the integrating capacitor (106). The device further comprises an auto-zero operational amplifier (110) having a third input (123) and a fourth input (124), whereby to the third input (123) and the first input (121) signals at virtual ground potential are applied. The fourth input (124) is connected to the output (125) by a circuit (15) comprising two offset error capacitors (112, 114), a second switch (111) and a third switch (113).(Figure 3)
摘要翻译：本发明涉及包括电容反馈跨阻抗运算放大器（11）的装置，其包括主运算放大器（107）（具有第一输入端（121），第二输入端（122）和输出端）），以及连接在第二输入和输出之间的积分电容器（106）和与积分电容器（106）并联连接的第一开关（105）。该装置还包括具有第三输入（123）和第四输入（124）的自动归零运算放大器（110），由此到达虚拟地电位的第三输入（123）和第一输入（121）信号。第四输入（124）通过包括两个偏移误差电容器（112,114），第二开关（111）和第三开关（113）的电路（15）连接到输出端（125）

76. 发明申请

WO2003107543A2 SEQUENTIAL DC OFFSET CORRECTION FOR AMPLIFIER CHAIN 审中-公开
标题翻译：放大器链的顺序直流偏移校正
公开(公告)号：WO2003107543A2
公开(公告)日：2003-12-24
申请号：PCT/US2003/018653
申请日：2003-06-13
申请人： SKYWORKS SOLUTIONS, INC.
发明人： MAGOON, Rahul , MOLNAR, Alyosha, C.
IPC分类号： H04B
CPC分类号： H03F3/45977
摘要： An amplifier chain with sequential DC offset correction for use in a radio receiver is provided. The amplifier chain has at least first and second amplifier stages connected in series. The first and second stages include an amplifier and a track and hold circuit connected in parallel across the amplifier. The track and hold circuit has a tracking state and a holding state. A control signal is coupled to the track and hold circuits of the first and second stages. The control signal is configured to set the track and hold circuits to the tracking state, which may be done simultaneously, and to sequentially set the track and hold circuit of the first stage to the holding state and then set the track and hold circuit of the second stage to the holding state.
摘要翻译：提供了具有用于无线电接收机中的顺序DC偏移校正的放大器链。放大器链具有串联连接的至少第一和第二放大器级。第一和第二级包括在放大器上并联连接的放大器和跟踪和保持电路。轨道和保持电路具有跟踪状态和保持状态。控制信号耦合到第一和第二级的跟踪和保持电路。控制信号被配置为将跟踪和保持电路设置为可以同时进行的跟踪状态，并且将第一级的跟踪和保持电路顺序地设置为保持状态，然后设置轨道和保持电路第二阶段到持有状态。

77. 发明申请

WO02087073A3 AN IMPROVED DC OFFSET SELF-CALIBRATION SYSTEM FOR A DIGITAL SWITCHING AMPLIFIER 审中-公开
标题翻译：用于数字切换放大器的改进的直流偏移自校准系统
公开(公告)号：WO02087073A3
公开(公告)日：2003-02-06
申请号：PCT/US0212407
申请日：2002-04-19
申请人： TRIPATH TECHNOLOGY INC
发明人： LLEWELLYN WILLIAM D
IPC分类号： H03F3/45 , H03F1/02 , H03F1/30 , H03F3/217 , H03F3/68 , G01R19/00 , H03F3/38 , H03F21/00
CPC分类号： H03F3/45977 , H03F1/02 , H03F1/304 , H03F3/2173 , H03F2200/375
摘要： A differential amplifier (100) includes first and second outputs (OUTP, OUTN) and first and second supply rails (VDD, GND). The differential amplifier (100) further includes offset cancellation circuitry (150). The offset cancellation circuitry (150) is operable during a calibration mode to generate an offset cancellation signal when the first and second outputs (OUTP, OUTN) are both coupled to a voltage between the first supply rail and the second supply rail (VDD, GND). The offset cancellation signal is for facilitating at least partial cancellation of an offset voltage associated with the first and second outputs (OUTP, OUTN) during a normal operation mode of the differential amplifier (100).
摘要翻译：差分放大器（100）包括第一和第二输出（OUTP，OUTN）和第一和第二电源轨（VDD，GND）。差分放大器（100）还包括偏移消除电路（150）。当第一和第二输出（OUTP，OUTN）都耦合到第一电源轨和第二电源轨之间的电压（VDD，GND）时，偏移消除电路（150）在校准模式期间可操作以产生偏移消除信号）。偏移消除信号用于在差分放大器（100）的正常操作模式期间促进与第一和第二输出（OUTP，OUTN）相关联的偏移电压的至少部分消除。

78. 发明申请

WO2002087073A2 AN IMPROVED DC OFFSET SELF-CALIBRATION SYSTEM FOR A DIGITAL SWITCHING AMPLIFIER 审中-公开
标题翻译：用于数字切换放大器的改进的直流偏移自校准系统
公开(公告)号：WO2002087073A2
公开(公告)日：2002-10-31
申请号：PCT/US2002/012407
申请日：2002-04-19
申请人： TRIPATH TECHNOLOGY INC.
发明人： LLEWELLYN, William, D.
IPC分类号： H03F
CPC分类号： H03F3/45977 , H03F1/02 , H03F1/304 , H03F3/2173 , H03F2200/375
摘要： A differential amplifier includes first and second outputs and first and second supply rails. The differential amplifier further includes offset cancellation circuitry. The offset cancellation circuitry is operable during a calibration mode to generate an offset cancellation signal when the first and second outputs are both coupled to a voltage between the first supply rail and the second supply rail. The offset cancellation signal is for facilitating at least partial cancellation of an offset voltage associated with the first and second outputs during a normal operation mode of the differential amplifier.
摘要翻译：差分放大器（100）包括第一和第二输出（OUTP，OUTN）和第一和第二电源轨（VDD，GND）。差分放大器（100）还包括偏移消除电路（150）。当第一和第二输出（OUTP，OUTN）都耦合到第一电源轨和第二电源轨之间的电压（VDD，GND）时，偏移消除电路（150）在校准模式期间可操作以产生偏移消除信号）。偏移消除信号用于在差分放大器（100）的正常操作模式期间促进与第一和第二输出（OUTP，OUTN）相关联的偏移电压的至少部分消除。

79. 发明申请

WO99019983A1 SINGLE SUPPLY VOLTAGE TO FREQUENCY CONVERTER OPTIMIZED FOR LOW VOLTAGE SENSING ABOVE AND BELOW GROUND 审中-公开
标题翻译：针对低电压感应优化的频率转换器的单电源电压和下面的接地
公开(公告)号：WO99019983A1
公开(公告)日：1999-04-22
申请号：PCT/US1998/020227
申请日：1998-09-25
IPC分类号： G01R31/36 , G01R19/00 , G01R19/252 , H03F1/30 , H03F3/45 , H03K7/06
CPC分类号： G01R19/0084 , H03F1/303 , H03F3/45753 , H03F3/45959 , H03F3/45973 , H03F3/45977 , H03K7/06
摘要： A voltage to frequency converter using a charge pump to restore the output voltage of the input integrator. The charge pump implementation allows the voltage to frequency converter's input to sense voltage above and below ground with a single supply using a charge pump, which can provide either a positive charge or a negative charge as the restoring force to the integrator. Inclusion of an interleaved charge pump provides advantages of implementation simplicity and of high performance. The voltage to frequency converter concentrates all offset and leakage errors at the input of the integrator amplifier, which in the preferred embodiment is a chopper stabilized amplifier providing very low offset. The voltage to frequency converter is intended for realization in integrated circuit form, providing very high performance in an integrated circuit having very low power requirements.
摘要翻译：使用电荷泵的电压到频率转换器来恢复输入积分器的输出电压。电荷泵实现允许电压到变频器的输入使用电荷泵使用单个电源来感测电压高于和低于地电压，这可以提供正电荷或负电荷作为积分器的恢复力。插入交错电荷泵提供实现简单性和高性能的优点。电压到频率转换器集中了积分放大器输入端的所有偏移和泄漏误差，在优选实施例中，它是提供非常低偏移的斩波稳定放大器。电压到频率转换器旨在以集成电路形式实现，在具有非常低功率要求的集成电路中提供非常高的性能。

80. 发明授权

EP2327153B1 AUTO-CORRECTION FEEDBACK LOOP FOR OFFSET AND RIPPLE SUPPRESSION IN A CHOPPER-STABILIZED AMPLIFIER 有权
标题翻译： FOR自动更正反馈回路失调电压和纹波斩波稳定放大器
公开(公告)号：EP2327153B1
公开(公告)日：2017-04-12
申请号：EP09789261.6
申请日：2009-09-04
申请人： Analog Devices, Inc.
发明人： KUSUDA, Yoshinori , BOTKER, Thomas, L.
IPC分类号： H03F3/45
CPC分类号： H03F3/45977

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