Patents Issued in December 16, 2010
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Publication number: 20100315122Abstract: A memory controller that controls termination in a memory device. The memory controller includes a data interface, command/address interface and termination control output. The data interface outputs write data onto a data line coupled to a data input of the memory device, and the command/address interfaces outputs, onto a command/address path coupled to the memory device, information that indicates whether the write data is to be received within the memory device.Type: ApplicationFiled: August 23, 2010Publication date: December 16, 2010Inventors: Kyung Suk Oh, Ian P. Shaeffer
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Publication number: 20100315123Abstract: A non-majority magnetic logic gate device for use in constructing compact and power efficient logical magnetic arrays is presented. The non-majority magnetic logic gate device includes a substrate, symmetrically aligned magnetic islands (SAMIs), at least one misaligned magnetic island (MAMI), magnetic field inputs (MFIs), and at least one magnetic field output (MFO). The SAMIs and MAMI are electrically isolated from each other but are magnetically coupled to one another through their respective magnetic fringe fields. The MAMI is geometrically and/or angularly configured to exhibit a magnetization ground state bias which is dependent upon which direction the applied magnetic clock field is swept. Non-majority logic gates can be made from layouts containing the SAMIs and the MAMI which contain a smaller number of components as comparable majority logic gate layouts.Type: ApplicationFiled: June 16, 2010Publication date: December 16, 2010Inventors: Michael T. Niemier, Mohammad T. Alam, Gary H. Bernstein, Xiaobo Sharon Hu, Wolfgang Porod, Edit Varga
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Publication number: 20100315124Abstract: Subject matter disclosed herein relates to circuit design, and more particularly relates to low power circuit techniques for receiver circuits.Type: ApplicationFiled: June 15, 2009Publication date: December 16, 2010Applicant: Berkeley Law & Technology Group, LLPInventor: Thomas W. Lynch
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Publication number: 20100315125Abstract: A dynamic domino circuit includes a clock generator and a domino circuit. The clock generator generates a pulse signal and a plurality of internal clock signals based on a global clock signal. Phases of the plurality of internal clock signals are sequentially delayed. The domino circuit sequentially performs a plurality of logic operations based on a plurality of input signals, the pulse signal and the plurality of internal clock signals and generates an output signal in synchronization with the pulse signal. The dynamic domino circuit may provide an effective interface with static logics.Type: ApplicationFiled: April 28, 2010Publication date: December 16, 2010Applicant: Samsung Electronics Co., LtdInventor: Min-Su KIM
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Publication number: 20100315126Abstract: A logic circuit includes a control circuit including a first logic gate to receive a selection signal and a first input signal and to output a pulse control signal and a second logic gate to receive the pulse control signal, a clock signal, and a delayed clock signal and to output a pulse signal, and a multiplexing logic circuit to receive the selection signal and the pulse signal from the control circuit, to receive at least one second, static input signal, and to output a signal corresponding to one of the first input signal and the second, static input signal based on the state of the selection signal.Type: ApplicationFiled: June 14, 2010Publication date: December 16, 2010Applicant: Samsung Electronics Co., Ltd.Inventor: Min-Su KIM
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Publication number: 20100315127Abstract: A semiconductor integrated circuit device includes: a first inverter constituted by a first transistor configured to charge a charge point based on an input signal, and a second transistor configured to discharge a discharge point based on the input signal; a P-type third transistor and an N-type fourth transistor with drain-source paths provided in parallel between the charge point and the discharge point; and a second inverter configured to invert a potential of the charge point or the discharge point and supply the inverted potential to gates of the third and fourth transistors, and obtain a delay signal of the input signal from the charge point or the discharge point. The semiconductor integrated circuit device secures a sufficient delay time with a small area.Type: ApplicationFiled: February 8, 2010Publication date: December 16, 2010Applicant: KABUSHIKI KAISHA TOSHIBAInventors: Chenkong Teh, Hiroyuki Hara
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Publication number: 20100315128Abstract: Circuits using four terminal transistors are disclosed. Such circuits can include various static and dynamic logic circuits, flip-flops, multiplexer, tri-state driver, phase detector, logic having variable speeds of operation, and/or analog circuit with such four terminal transistors operating in a linear or nonlinear mode.Type: ApplicationFiled: August 23, 2010Publication date: December 16, 2010Applicant: SUVOLTA, INC.Inventor: Ashok Kumar Kapoor
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Publication number: 20100315129Abstract: A clock signal switching device includes: a plurality of signal synchronization generation means for generating mask signals and synchronized switching signals; a plurality of clock signal mask means for generating masked clock signals; a synchronized switching signal selection means for selecting one from among the synchronized switching signals; and a masked clock signal selection means for selecting one from among the masked clock signals.Type: ApplicationFiled: August 23, 2010Publication date: December 16, 2010Applicant: PANASONIC CORPORATIONInventors: Shinichi Hashimoto, Tadahiro Yoshida, Ryogo Yanagisawa
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Publication number: 20100315130Abstract: A drive circuit that outputs low-voltage differential signals to an external load circuit, including: first and second nodes to which the external load circuit is connected; a first series circuit including first and second switching elements, connected in series using the first node as a common node; a second series circuit including third and fourth switching elements, connected in series using the second node as a common node; and a first current source that outputs a predetermined current to the first and second series circuits, in which a back gate of a transistor of a first conductivity type included in at least one of the first and third switching elements or the first current source is forward-biased.Type: ApplicationFiled: May 13, 2010Publication date: December 16, 2010Applicant: NEC ELECTRONICS CORPORATIONInventor: Hitoshi IRINO
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Publication number: 20100315131Abstract: A programmable frequency divider with a full dividing range includes a plurality of cascaded 2/1 frequency dividers. Each of the 2/1 frequency dividers has a first input node, a first output node, a second input node, a second output node and a third input node. The first input node receives a first clock signal divided by the 2/1 frequency divider and outputted as a second clock signal through the first output node. A second logical signal is generated according to the second clock signal, the first clock signal and a first logical signal received from the second input node. The 2/1 frequency divider selectively switches to perform a divide-by-two or divide-by-one operation according to the second logical signal and a first divisor signal received from the third input nodes. The programmable frequency divider provides the full dividing range as the result of utilizing various divisor of the 2/1 frequency divider.Type: ApplicationFiled: June 30, 2009Publication date: December 16, 2010Applicant: National Chip Implementaion Center National Applied Research LaboratoriesInventors: Chi Sheng Lin, Ting-Hsu Chien, Chin-Long Wey, Chun-Ming Huang, Ying-Zong Juang
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Publication number: 20100315132Abstract: A distributed charge pump system uses a delay element and frequency dividers to generate out of phase pump clock signals that drive different charge pumps, to offset peak current clock edges for each charge pump and thereby reduce overall peak power. Clock signal division and phase offset may be extended to multiple levels for further smoothing of the pump clock signal transitions. A dual frequency divider may be used which receives the clock signal and its complement, and generates two divided signals that are 90° out of phase. In an illustrative embodiment the clock generator comprises a variable-frequency clock source, and a voltage regulator senses an output voltage of the charge pumps, generates a reference voltage based on a currently selected frequency of the variable-frequency clock source, and temporarily disables the charge pumps (by turning off local pump clocks) when the output voltage is greater than the reference voltage.Type: ApplicationFiled: August 20, 2010Publication date: December 16, 2010Inventors: Fadi H. Gebara, Jente B. Kuang, Abraham Mathews
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Publication number: 20100315133Abstract: A power-up circuit for a semiconductor memory device includes a voltage division unit configured to divide a power supply voltage, a first power-up generation unit configured to detect a voltage level of a first divided voltage of the voltage division unit during an initial stage of applying a power supply to generate a first power-up signal and a second power-up generation unit configured to detect a voltage level of a second divided voltage of the voltage division unit, after the first power-up signal is generated from the first power-up generation unit, to generate a second power-up signal.Type: ApplicationFiled: June 30, 2009Publication date: December 16, 2010Inventor: Khil-Ohk Kang
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Publication number: 20100315134Abstract: Multi-lane PCI express busses devices, methods and systems are implemented in various fashions. According to one such implementation, a method is used for synchronizing data transfers between IC dies of a plurality of integrated-circuits (IC) dies. In a first IC die, a synchronizing signal is received and latched in a first clock domain and in the first IC die to produce a first latched output signal. The latched output signal is provided for use by each of the plurality of IC dies. In each of the plurality of IC dies, the first latched output signal is latched in the first clock domain to produce a second latched output signal. The second latched output signal is latched in a second clock domain to produce a third latched output signal. The third latched output signal is used to synchronize a respective communication lane.Type: ApplicationFiled: March 2, 2009Publication date: December 16, 2010Applicant: NXP B.V.Inventor: Sharad Murari
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Publication number: 20100315135Abstract: A two reference clock architected redriver includes an inbound elastic buffer and an outbound elastic buffer. Data transmitted to and received from a North Bridge uses a common reference clock architecture. Data transmitted to and received from an external blade uses a separate reference clock architecture. The inbound elastic buffer includes an inbound elastic buffer recovered clock domain, an inbound elastic buffer common reference clock domain, and an inbound decoder/descrambler, an inbound scrambler/encoder, and inbound liner shift registers. The outbound elastic buffer includes an outbound elastic buffer common reference clock domain, an outbound elastic buffer low jitter clock domain, and an outbound decoder/descrambler, an outbound scrambler/encoder, and outbound liner shift register.Type: ApplicationFiled: February 20, 2008Publication date: December 16, 2010Inventors: Ho M. Lai, Chi K. Sides, Paul V. Brownell
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Publication number: 20100315136Abstract: In a PLL circuit, a threshold discriminator generates a control signal indicating a relative level of a control voltage. A controller outputs a controlling value based on the control signal. If the control signal indicates a high level when the controlling value specifies a control voltage-to-oscillation frequency correspondence relation whose upper and lower limits of oscillation frequency are highest, and if the control signal indicates a low level when the controlling value specifies a correspondence relation whose upper and lower limits of oscillation frequency are lowest, the controller outputs a predetermined controlling value. An oscillator has the correspondence relations set therein such that the correspondence relations have respective different upper and lower limits of oscillation frequency and are correlated with the respective controlling values.Type: ApplicationFiled: May 26, 2010Publication date: December 16, 2010Applicant: FUJITSU LIMITEDInventors: Tetsuji YAMABANA, Kouichi Kanda
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Publication number: 20100315137Abstract: A PLL circuit which can obtain a VCO output having satisfactory spurious output characteristics with respect to all channels and which can suppress the fluctuation of the characteristics due to a temperature change is disclosed. A control circuit 3 provides a frequency division ratio table 32 where frequency division ratios to improve spurious output characteristics in the output of a VCO for each channel number at temperatures are stored, and the control circuit reads, from the table 32, the frequency division ratio corresponding to the temperature detected by the temperature sensor 31 and an input channel number, to set the frequency division ratio in a PLL IC 2 and to set the channel number and the frequency division ratio in a DDS circuit 4. The DDS circuit 4 calculates the value of a reference frequency based on the channel number and the frequency division ratio to generate the reference frequency.Type: ApplicationFiled: June 11, 2010Publication date: December 16, 2010Inventor: Hiroki Kimura
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Publication number: 20100315138Abstract: A synthesizer of the present invention includes a synthesizer section that generates an oscillation signal based on a reference oscillation signal output from a MEMS resonator and inputs the oscillation signal to a frequency converter; and a control section that adjusts a frequency of the oscillation signal output from the synthesizer section. In frequency adjustment by the control section, when a frequency adjustment unit of the synthesizer section is defined as predetermined value F in which quality of an output signal from the frequency converter is a quality limit threshold value, frequency adjustment unit ?fcont of the synthesizer section is within predetermined value F.Type: ApplicationFiled: February 10, 2009Publication date: December 16, 2010Applicant: Panasonic CorporationInventors: Akihiko Namba, Yasunobu Tsukio, Susumu Fukushima
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Publication number: 20100315139Abstract: A semiconductor memory device is able to generate an output enable signal in response to a read command and CAS latency information. The semiconductor memory device includes a delay locked loop configured to detect a phase difference of an external clock signal and a feedback clock signal, generate a delay control signal corresponding to the detected phase difference, and generate a DLL clock signal by delaying the external clock signal for a time corresponding to the delay control signal, a delay configured to output an active signal as an output enable reset signal in response to the delay control signal and an output enable signal generator configured to be reset in response to the output enable reset signal and generate an output enable signal in response to a read signal and a CAS latency signal by counting the external clock signal and the DLL clock signal.Type: ApplicationFiled: June 30, 2009Publication date: December 16, 2010Inventors: Hyung-Soo Kim, Yong-Ju Kim, Sung-Woo Han, Hee-Woong Song, Ic-Su Oh, Tae-Jin Hwang, Hae-Rang Choi, Ji-Wang Lee, Jae-Min Jang, Chang-Kun Park
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Publication number: 20100315140Abstract: Disclosed herein are techniques, systems, and methods relating to compensation of phase disturbances of a phase lock-loop during power ramp up or down of a power amplifier. More specifically, a phase lock-loop is described that is able to switch between type I and type II PLL modes depending on the power state of the power amplifier without introducing additional disturbances.Type: ApplicationFiled: June 12, 2009Publication date: December 16, 2010Applicant: Infineon Technologies AGInventors: Thomas Mayer, Rainer Kreienkamp, Jens Kissing
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Publication number: 20100315141Abstract: Signal edge alignment embodiments include multiple delay stages connected in series. Each delay stage includes a delay line, an interface circuit, and a tap selection circuit. The delay line applies fixed-width delays to an input signal to produce delayed versions of the input signal at a plurality of taps. The interface circuit, which is characterized by an inherent interface circuit delay, passes one of the delayed versions to an interface circuit output in response to a control signal. The tap selection circuit determines a finally-identified tap of the plurality of taps by determining an initially-identified tap at which a delayed version of the input signal most closely has a desired alignment with the input signal, and by identifying the finally-identified tap in the control signal as a tap that occurs earlier in the delay line than the initially-identified tap. This compensates for the inherent delay of the delay stage.Type: ApplicationFiled: June 12, 2009Publication date: December 16, 2010Applicant: FREESCALE SEMICONDUCTOR, INC.Inventors: Lipeng Cao, Khoi B. Mai, Hector Sanchez
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Publication number: 20100315142Abstract: A system for communicating data between a first integrated circuit device and a second integrated circuit device. The first iterated circuit device transmits a timing signal to the second integrated circuit device, wherein the timing signal includes a first transition and a second transition. The first integrated circuit device then delays the data, so that the data is delayed relative to the timing signal by a first predetermined delay time. Next, the first integrated circuit device transmits the delayed data to the second integrated circuit device, which receives the tinting signal and the delayed data. Next, the second integrated circuit device delays the first transition of the timing signal by a second predetermined delay time to generate a delayed version of the first transition. The second integrated circuit device then senses the data during a time interval between the delayed version of the first transition and the second transition.Type: ApplicationFiled: August 25, 2010Publication date: December 16, 2010Applicant: RAMBUS INC.Inventor: Jared Zerbe
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Publication number: 20100315143Abstract: A circuit for reducing popping sound comprises a waveform generator, a voltage accumulator, and a comparator. The waveform generator is configured for generating a periodic waveform, and the voltage accumulator is configured for generating an increased voltage. The comparator is configured for comparing the periodic waveform with the increased voltage for generating a successive pulse signal. A percentage of a duty cycle in the successive pulse signal is increased gradually.Type: ApplicationFiled: June 12, 2009Publication date: December 16, 2010Applicant: ELITE SEMICONDUCTOR MEMORY TECHNOLOGY INC.Inventors: CHIN YANG CHEN, JIAN WEN CHEN
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Publication number: 20100315144Abstract: Flip-flop circuits including a dynamic input unit and a control clock generator are provided. The dynamic input unit precharges an evaluation node to a power supply voltage in a first phase of a clock signal, selectively discharges the evaluation node based on input data in a second phase of the clock signal, and compensates for voltage drop of the evaluation node in response to a first control clock signal. The control clock generator generates the first control clock signal and a second control clock signal based on at least the clock signal.Type: ApplicationFiled: June 10, 2010Publication date: December 16, 2010Inventors: Hyoung-Wook Lee, Min-Su Kim
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Publication number: 20100315145Abstract: An apparatus for generating a plurality of signals is provided. The apparatus provided includes a first signal generation unit, including an input receiving a reference signal, and a plurality of outputs providing a first plurality of output signals being generated based on the reference signal, wherein any two of the output signals have a different phase. The apparatus provided further includes a second signal generation unit, including at least two inputs receiving at least two signals selected from the first plurality of output signals generated by the first signal generation unit, and a plurality of outputs providing a second plurality of output signals generated by interpolating the respective phases of the received at least two signals selected from the first plurality of output signals.Type: ApplicationFiled: February 22, 2008Publication date: December 16, 2010Applicant: AGENCY FOR SCIENCE, TECHNOLOGY AND RESEARCHInventors: Piew Yoong Chee, Wing Fai Loke, Yan Wah Michael Chia, Jee Khoi Yin
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Publication number: 20100315146Abstract: External frequency adjustment methods and systems are provided. First, an external frequency of an electronic device is increased from an initial frequency until a processing unit fails to properly operate, and a maximum first frequency value at which the processing unit can properly operate is recorded as the external frequency. The electronic device is enabled to reboot, and at least one peripheral device is initiated and operated according to the first frequency value. It is determined whether the peripheral device is properly operating at the first frequency value. When the peripheral device can not properly operate at the first frequency value, the electronic device is enabled to reboot, the first frequency value is subtracted by a predefined value to obtain a second frequency value, and the second frequency value is set as the external frequency, wherein the second frequency value is the maximum frequency value at which the processing unit can properly operate.Type: ApplicationFiled: September 29, 2009Publication date: December 16, 2010Inventor: Ming-De YEN
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Publication number: 20100315147Abstract: Phase mixers, clock signal generators, memories and methods for providing an output signal having a phase relative to the phase difference of input clock signals are disclosed. One such phase mixer includes a phase mixer circuit having inputs and an output. The phase mixer is configured to receive a plurality of input clock signals and generate an output clock signal at the output having a phase relative to the plurality of input clock signals. The phase mixer further includes an adjustment circuit coupled to the phase mixer circuit. In some phase mixers, a control circuit coupled to the phase mixer circuit and the adjustment circuit is included. The control circuit is configured to generate a control signal based on the input signals to adjust an electrical load-to-drive ratio of the phase mixer.Type: ApplicationFiled: June 12, 2009Publication date: December 16, 2010Applicant: Micron Technology, Inc.Inventor: Eric Booth
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Publication number: 20100315148Abstract: Oscillator system and method thereof. The oscillator system includes a first voltage-to-current converter configured to receive a first voltage and generate a first current based on at least information associated with the first voltage, and a second voltage-to-current converter configured to receive a second voltage and generate a second current based on at least information associated with the second voltage. Additionally, the oscillator system further includes a current-mode N-bit digital-to-analog converter configured to receive at least the second current and a first clock signal and to generate a third current based on at least information associated with the second current and the first clock signal. N is a first integer. The first clock signal is associated with a first clock frequency corresponding to a first clock period. Moreover, the oscillator system further includes a current comparator coupled to the first voltage-to-current converter and the current-mode N-bit digital-to-analog converter.Type: ApplicationFiled: August 7, 2009Publication date: December 16, 2010Applicant: ON-BRIGHT ELECTRONICS (SHANGHAI) CO., LTD.Inventors: Liqiang Zhu, Lieyi Fang
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Publication number: 20100315149Abstract: A high-speed data compared latch with auto-adjustment of offset, includes input pair transistors P, input pair transistors N, a compared latch module, an input control module, an output control module and a offset logic control module, the offset logic control module creates two control signals that regulate the number of input pair transistors P and input pair transistors N respectively according to reset signal RESET and the latched output of the compared latch module, and achieve self correcting of offset through regulating the number of the input pair transistors P and the input pair transistors N. The present invention is a feedback mechanism, automatically trimming the number of differential input pair to achieve the trimming differential pair operating point and the threshold voltage, eliminate the process variation, and latch on more precise control match the differential input pair transistors of the high-speed data compared latch in receiver accurately.Type: ApplicationFiled: June 10, 2010Publication date: December 16, 2010Inventors: Guosheng Wu, Bin Li
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Publication number: 20100315150Abstract: Methods, systems, and devices are described for providing voltage level shifting that may operate reliably and at low power, even at high voltages and/or high switching frequencies. Embodiments receive an input signal representing input information, and effectively generate two voltage responses as a function of the input signal. Each voltage response includes exponential terms as a function of resistive and capacitive loading effects of components of the embodiments. A combined response signal is generated substantially as a superposition of the first response signal and the second response signal. A high-side driver signal is then generated as a function of the combined response signal, such that the high-side driver signal substantially preserves the input information represented by the input signal, and such that the first exponential response and the second exponential response are substantially absent from the high-side driver signal.Type: ApplicationFiled: July 21, 2010Publication date: December 16, 2010Applicant: ASIC Advantage Inc.Inventor: Sam Seiichiro Ochi
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Publication number: 20100315151Abstract: Apparatus for controlling an integrated circuit comprises a power control device for controlling the power to at least part of the integrated circuit, the power control device is connected to a first input, for receiving a power-down signal, and a second input, for receiving a power-up signal, the power control device is adapted to power-up the at least part of the integrated circuit if a power-up signal is received at the second input when the at least part of the integrated circuit is in a powered-down state, and the power control device is further adapted to maintain the at least part of the integrated circuit in the powered-up state regardless of any signal received at the second input when the at least part of the integrated circuit is in a powered-up state, the apparatus is arranged so that the second input is also connected to a component of the integrated circuit and the apparatus comprising means for sending a signal to the component of the integrated circuit via the second input when the at least paType: ApplicationFiled: August 23, 2010Publication date: December 16, 2010Applicant: FUTURE WAVES UK LIMITEDInventor: Alison Burdett
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Publication number: 20100315152Abstract: The present invention relates to a control method for a soft switch circuit in a switch power supply, which controls first and second main power switch devices to be turned on and turned off constantly to generate an alternating main power filter current, and controls forward and backward auxiliary switch devices to be turned on and turned off to generate an intermittent alternating resonant current across a resonant branch in the same direction as the main power filter current to thereby achieve zero-voltage turn-on of the first and second main power switch devices; and further controls the forward and backward auxiliary switch devices to be turned on and turned off to generate compensation currents across the resonant branch in the opposite direction to the alternating main power filter current in at least a period of time during resting of the resonant current to thereby accomplish a charging and discharging process of resonant capacitors in a dead time.Type: ApplicationFiled: September 8, 2008Publication date: December 16, 2010Applicant: LIEBERT CORPORATIONInventors: Chuntao Zhang, Xiaofei Zhang, Xueli Xiao
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Publication number: 20100315153Abstract: In one or more embodiments described herein, there is provided an apparatus comprising a substrate, and a plurality of carbon nanotubes (semiconducting nano-elements) disposed and fixed with said substrate. The nanotubes are disposed and fixed on said substrate such that they define a carbon nanotube network substantially at the percolation threshold of the network. As the network is at the percolation threshold, this provides for one or more signal paths extending from an input region to an output region. The apparatus is configured to, upon receiving particular input signalling via the input region, provide particular predefined output signalling at the output via the one or more signal paths, the particular output signalling being predefined according to the one or more one signal paths.Type: ApplicationFiled: June 12, 2009Publication date: December 16, 2010Inventors: Markku Anttoni Oksanen, Eira Seppälä, Vladmir Ermolov, Pirjo Pasanen
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Publication number: 20100315154Abstract: A reliable charge pump circuit includes an operational amplifier; an upper current mirror; a lower current mirror; a startup circuit; and an anti-lock circuit, wherein the anti-lock circuit includes a current source and a diode-connected NMOS transistor, which increases the driving strength of the operational amplifier to two NMOS transistors connected to an output node of the operational amplifier, so as to prevent deadlock caused by multiple stable status and improve production yield.Type: ApplicationFiled: June 3, 2010Publication date: December 16, 2010Inventor: Weiyun Tang
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Publication number: 20100315155Abstract: A semiconductor device including: a low threshold PMOS device formed over an N-type region, the source and drain of the low threshold PMOS formed in P-regions surrounded by N-regions; a low threshold NMOS device formed in a P-type region, the source and drain of the low threshold NMOS formed in N-regions surrounded by P-regions; first and second substrate bias generators, each connected to one of the low threshold devices for generating a substrate bias; a voltage source for generating substrate bias during a standby mode to reduce leakage current; wherein a low voltage threshold is established by the source and drain regions of the low threshold devices and their respective surrounding regions of opposite polarity.Type: ApplicationFiled: August 24, 2010Publication date: December 16, 2010Applicant: Fairchild Semiconductor CorporationInventor: Jun Cai
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Publication number: 20100315156Abstract: A voltage bandgap reference circuit includes a voltage keeping circuit, for keeping a first voltage at a first point and a second voltage at a second point to a constant level; a first NMOSFET, having a drain terminal coupled to the first point and a source terminal coupled to a first specific voltage level; and a second NMOSFET, having a drain terminal coupled to the second point and a source terminal coupled to the first specific voltage level.Type: ApplicationFiled: June 16, 2009Publication date: December 16, 2010Inventor: Wen-Chang Cheng
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Publication number: 20100315157Abstract: A semiconductor device is capable of generating an internal voltage having a voltage level that is dependent on an external power supply voltage. The semiconductor device includes an internal voltage generation unit configured to generate a plurality of internal voltages having different voltage levels by using an external power supply voltage, a voltage level detection unit configured to detect a voltage level of the external power supply voltage, and a selection unit configured to selectively output one of the internal voltages in response to a detection result of the voltage level detection unit.Type: ApplicationFiled: June 30, 2009Publication date: December 16, 2010Inventors: Hyoung-Jun Na, Kyung-Whan Kim
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Publication number: 20100315158Abstract: The disclosed invention provides apparatus and methods for dynamic biasing in electronic systems and circuits. The apparatus and methods disclosed provide non-linear biasing responsive to monitored load conditions.Type: ApplicationFiled: June 13, 2010Publication date: December 16, 2010Applicant: TRIUNE IP LLCInventors: Amer Atrash, Ross Teggatz, Brett Smith
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Publication number: 20100315159Abstract: A high performance, power integrated circuit composed of two charge balanced, extended drain NMOS transistors (CBDEMOS) formed on an n-substrate. A CBDENMOS transistor with an n-type substrate source. A charge balanced channel diode (CBCD) with an n-type substrate. A process for forming a high performance, power integrated circuit composed of two CBDENMOS transistors formed on an n-substrate. A process for forming a power integrated circuit composed of one CBDENMOS transistor and one CBCD on an n-type substrate.Type: ApplicationFiled: June 15, 2010Publication date: December 16, 2010Applicant: TEXAS INSTRUMENTS INCORPORATEDInventors: Christopher Boguslaw Kocon, John Manning Savidge Neilson, Simon John Molloy, Haian Lin, Charles Walter Pearce
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Publication number: 20100315160Abstract: An adaptive demodulator for a contactless device, including a rectifier configured to rectify a voltage which is dependent on a signal received by the contactless device, and a voltage regulator coupled to the rectifier and configured to adjust the voltage to be within a voltage window.Type: ApplicationFiled: June 10, 2009Publication date: December 16, 2010Applicant: INFINEON TECHNOLOGIES AGInventors: Richard SBUELL, Admir Alihodzic, Martin Joechlinger
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Publication number: 20100315161Abstract: A power inductor comprising a tube and one or more coils. The tube in one embodiment is generally cylindrical and comprises a liquid-cooled center portion, the tube further comprising an inner diameter, an outer diameter, and an outer surface. The coils of one embodiment are coupled to the tube outer surface, with each of the one or more coils having a coil thickness, and at least a portion of a coil turn.Type: ApplicationFiled: June 16, 2009Publication date: December 16, 2010Applicant: ADVANCED ENERGY INDUSTRIES, INC.Inventors: Igor Morozov, Natasha Morozov
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Publication number: 20100315162Abstract: A 3-way Doherty amplifier has an amplifier input and an amplifier output. The amplifier has a main stage, a first peak stage and a second peak stage. The amplifier has an input network connecting the amplifier input to the inputs of the stages, and an output network connecting the stages to the amplifier output. The output network implements a phase shift of 90° between the output of the main stage and the amplifier output; a phase shift of 180° between the output of the first peak stage and the amplifier output; and a phase shift of 90° between the third output and the amplifier output.Type: ApplicationFiled: December 18, 2008Publication date: December 16, 2010Applicant: NXP B.V.Inventors: Radjindrepersad Gajadharsing, W. C. E Neo, M. Pelk, L. C. N. De Vreede, Ji Zhao
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Publication number: 20100315163Abstract: A class D power amplifier includes: a signal input terminal for receiving an analog signal; an analog signal processing unit for amplifying the analog signal; an integrating circuit for integrating the analog signal received from analog signal processing unit; a PWM circuit for providing pulse width modulation to an integration signal received from the integrating circuit, and outputting a resulting pulse width modulation signal having a duty ratio falling within a first duty ratio range; a duty ratio adjusting circuit for adjusting the pulse width modulation signal, received from the PWM circuit, to have a pulse width falling within a second duty ratio range narrower than the first duty ratio range; a first driver and a second driver each for processing the pulse width modulation signal received from the duty ratio adjusting circuit; and power transistors.Type: ApplicationFiled: December 9, 2009Publication date: December 16, 2010Applicant: Rohm Co., Ltd.Inventors: Ryo Takagi, Koji Takahata
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Publication number: 20100315164Abstract: The performance of an AGC loop typically depends on several factors, including gain linearity of the VGA and variation in the VGA bandwidth over the range of available gain settings. Although a resistively degenerated VGA provides for excellent gain linearity and immunity to process variations, the conventional architecture for a resistively degenerated VGA suffers from bandwidth variation over the range of available gain settings. Embodiments are provided herein of a constant-bandwidth VGA that utilizes resistive degeneration. To maintain a constant bandwidth over the range of available gain settings, degeneration resistors are coupled in parallel with compensation capacitors. In an embodiment, a compensation capacitor is determined to have a capacitance substantially equal to the decrease in total degeneration resistance that occurs as a result of an associated degeneration resistor being placed in parallel with the total degeneration resistance.Type: ApplicationFiled: June 10, 2009Publication date: December 16, 2010Applicant: Broadcom CorporationInventor: Kambiz VAKILIAN
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Publication number: 20100315165Abstract: A broadband high output current output stage includes at least one first differential pair for enhancing the bandwidth. A second differential pair is further disposed in the circuit. The second differential pair is coupled to one of the first differential pair, such that a large output voltage swing is distributed to all transistors to avoid breakdowns thereof. A feedback unit is connected between each bias unit and the first differential pair. The first compensation unit compensates the electric characteristic of the high-frequency zero of the feedback unit and the bias unit, thereby broadening the linear bandwidth of the frequency response. The second compensation units are disposed between the first differential pairs. Each second compensation unit compensates the high-frequency zero of the node where each two first differential pairs are cascaded, thereby further broadening the linear bandwidth of the frequency response.Type: ApplicationFiled: June 10, 2010Publication date: December 16, 2010Applicant: NATIONAL TSING HUA UNIVERSITYInventors: MIN-SHENG KAO, JEN-MING WU, YU-HAO HSU
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Publication number: 20100315166Abstract: There is provided a variable gain circuit system which is inductorless and capable of achieving a high gain and a wide band by elements for achieving variable gain to prevent decreasing a gain or deteriorating the band. The variable gain circuit includes: transistors; a resistor connected as a load of each transistor; a voltage source applying a bias voltage to each gate of the transistors; a switch selectively connecting the voltage source or a ground potential to each gate of the transistors in accordance with gain setting; and a current source connected to a common input. A drain of each transistor is connected to an input of a circuit in a subsequent stage.Type: ApplicationFiled: June 9, 2010Publication date: December 16, 2010Applicant: Hitachi, Ltd.Inventors: Takehito KAMIMURA, Norio Chujo
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Publication number: 20100315167Abstract: An amplifier has a first transistor, a second transistor, a third transistor and a fourth transistor, a first transformation network having first and second grounds and a second transformation network having third and fourth grounds. The amplifier has a collector of the first transistor operatively connected to a base of the third transistor by the first transformation network, a collector of the second transistor operatively connected to a base of the fourth transistor by the second transformation network, the first ground and the third ground are electrically connected to each other, the second ground and the fourth ground are electrically connected to each other, the emitters of the first and of the second transistors are electrically connected to the first ground and the third ground, and the second ground and the fourth ground are electrically connected to the emitters of the third and of the fourth transistors.Type: ApplicationFiled: October 22, 2007Publication date: December 16, 2010Inventor: Kyle Mark Hershberger
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Publication number: 20100315168Abstract: A Radio Frequency (RF) cascode power amplifier operates with differing battery supply voltages. A transconductance stage has a transistor with an RF signal input at its gate. A cascode stage has at least one cascode transistor, the cascode stage coupled in series with the transconductance stage between a battery voltage node and ground, the cascode stage having an RF signal output at the battery voltage node and at least one bias input to the at least one cascode transistor. Cascode bias feedback circuitry applies fixed bias voltage(s) to the at least one two bias inputs for a low battery voltage and applies feedback bias voltage(s) to the at least two bias inputs for a high battery voltage, the feedback bias voltage(s) based upon a voltage of the battery voltage node. More than two differing battery supply voltages are supported.Type: ApplicationFiled: August 22, 2010Publication date: December 16, 2010Applicant: BROADCOM CORPORATIONInventors: MINGYUAN LI, ALI AFSAHI, ARYA REZA BEHZAD
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Publication number: 20100315169Abstract: Techniques for cancelling a disturbance signal from a PLL output signal. In an aspect, a cancellation signal is combined with the signal input to a VCO or DCO in the PLL. In a further aspect, the appropriate cancellation signal is derived by analyzing one or more signals within the PLL. The signals within the PLL may be correlated against one or more disturbance signal templates, such as a sinusoid having a known frequency, to derive one or more correlation coefficients. The coefficients may be applied to weight one or more disturbance synthesis functions to generate the cancellation signal. Further aspects provide for joint analysis, synthesis, and cancellation of signals having unknown frequency from the PLL output.Type: ApplicationFiled: June 12, 2009Publication date: December 16, 2010Applicant: QUALCOMM IncorporatedInventors: Daniel F. Filipovic, Gary J. Ballantyne, Jifeng Geng
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Publication number: 20100315170Abstract: Methods and apparatus for tuning devices having resonators are described. Phase shifters are included in the circuits and used to shift the phase of the output signal(s) of the resonators. In some implementations, the phase shifters are configured in a feedback loop with the resonators. One or more of the apparatus described herein may be implemented as part, or all, of a microelectromechanical system (MEMS).Type: ApplicationFiled: July 2, 2010Publication date: December 16, 2010Applicant: Sand9, Inc.Inventors: David Locascio, Reimund Rebel, Jan H. Kuypers
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Publication number: 20100315171Abstract: Apparatus are provided for a voltage-controlled oscillator module. A voltage-controlled oscillator module comprises an input node for receiving an input voltage, a voltage-controlled oscillator, and voltage translation circuitry coupled between the input node and the voltage-controlled oscillator. The voltage translation circuitry is configured to generate a control voltage based on the input voltage and the voltage-controlled oscillator generates an oscillating signal at an oscillation frequency in response to the control voltage. Biasing circuitry is coupled to the voltage translation circuitry, and the biasing circuitry is configured to adjust the ratio of the control voltage to the input voltage.Type: ApplicationFiled: June 12, 2009Publication date: December 16, 2010Applicant: FREESCALE SEMICONDUCTOR, INC.Inventors: Khoi Mai, Hector Sanchez