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| Number | Title | Issue Date |
| 8188768 | Low power consumption low kick-back noise comparator circuit for analog-to-digital converter The present invention is directed for a comparator circuit used in an analog-to-digital converter, and more particularly, for a low power consumption low kick-back noise comparator circuit for an analog-to-digital converter, which can significantly reduce kick-back ... | 05/29/2012 |
| 7956650 | Input circuit of semiconductor integrated circuit An input circuit is disclosed. The input circuit can include a cross voltage generating block that can be configured to perform charge-sharing on a pair of input signals whose phases are opposite to each other and generate a cross voltage, and an input buffer block ... | 06/07/2011 |
| 7656199 | Fast, low offset ground sensing comparator A fast, accurate, low offset comparator may be configured with multiple gain stages. A low gain, low input impedance, and fully differential common-gate amplifier may be configured as a first stage in the multi-stage comparator, providing a wide bandwidth for small ... | 02/02/2010 |
| 7609094 | Input circuits and methods thereof An input circuit comprising a level-determining unit and an output unit is provided. In a first period controlled by a first enable signal, the level-determining unit receives an input signal at an input terminal of the input circuit and determines a voltage level o... | 10/27/2009 |
| 7551003 | Current mirror circuit and constant current circuit having the same A current mirror circuit includes a pair of first and second transistors having bases connected together and emitters connected to a power line, a resistor connected between the bases of the first and second transistors and the power line, a third transistor for pro... | 06/23/2009 |
| 7535264 | Methods and systems for comparing currents using current conveyor circuitry Methods and systems are provided for comparing currents. The method includes driving a first current through a first X leg of a first current conveyor circuit and a second current through a second X leg of a second current conveyor circuit. The method further includ... | 05/19/2009 |
| 7528634 | High voltage comparator using sliding input low voltage devices A voltage comparator contains low voltage devices (e.g., bipolar or MOS transistors) and high voltage devices (e.g., DMOS transistors). The low voltage devices, which cannot sustain a voltage greater than a relatively small range of variation that is substantially l... | 05/05/2009 |
| 7518412 | Output circuit having short rise time and small consumption current A current mirror circuit includes p-type MOS (PMOS) transistors, whereby the current flowing when the input voltage is “H” is interrupted when an output node of the current mirror circuit goes from “L” to “H,” so that a cascode-connected PMOS transistor ... | 04/14/2009 |
| 7514965 | Voltage comparator circuit with symmetric circuit topology A voltage comparator circuit is composed of a differential amplifier circuit receiving a pair of input signals to develop an output signal on an output terminal, and a waveform shaping circuit connected to the output terminal. The differential amplifier circuit incl... | 04/07/2009 |
| 7514966 | Fast, low offset ground sensing comparator A fast, accurate, low offset comparator may be configured with multiple gain stages. A low gain, low input impedance, and fully differential common-gate amplifier may be configured as a first stage in the multi-stage comparator, providing a wide bandwidth for small ... | 04/07/2009 |
| 7403045 | Comparator circuit with reduced switching noise A comparator circuit includes a differential amplifier circuit, a latch circuit, and a control signal generating circuit. The latch circuit includes a pair of cross-coupled inverting amplifiers that pull the output signals of the differential amplifier to the high a... | 07/22/2008 |
| 7394295 | Sense amplifier The invention relates to a sense amplifier comprising the following element: a first current mirror unit coupled to a high voltage source, outputting a first current and a second current according to a first reference current, wherein the second current is twice the... | 07/01/2008 |
| 7375559 | Differential comparator with a replica input stage to set the accurate bias current for improved common mode rejection Methods and apparatus for properly biasing differential comparators are provided. Using a feedback relationship, a bias for a main stage that receives a first differential input of the comparator is produced. Separately, a feedback relationship produces a bias for a... | 05/20/2008 |
| 7373575 | Method and apparatus for generating expect data from a captured bit pattern, and memory device using same Expect data signals are generated for a series of applied data signals having a known sequence to determine if groups of the data signals were properly captured. A first group of the applied data signals is captured, and a group of expect data signals are generated ... | 05/13/2008 |
| 7362142 | Current source apparatus, light-emitting-device apparatus and digital-analog converting apparatus A current source apparatus includes a first MOS transistor having a drain serving as current input terminals with the gate connected to the drain, a first switch connected to the source of the first MOS transistor, a second MOS transistor having a drain serving as a... | 04/22/2008 |
| 7362144 | Low jitter input buffer with small input signal swing A particular input buffer receiver includes a buffer input portion for receiving an input signal, a large capacitor between a bias node and the lower supply voltage, and a buffer output portion for producing an output signal. The circuit works to remove ground noise... | 04/22/2008 |
| 7348807 | Electric circuit for providing a selection signal An electric circuit for providing a selection signal being used to select a control value of a control variable which oscillates, at steady state, about a reference value about a first control value and a second control value with a first period duration comprises a... | 03/25/2008 |
| 7336108 | Semiconductor integrated circuit with stepped-up voltage pump circuit A semiconductor integrated circuit includes a pump circuit configured to raise an external power supply voltage to generate a stepped-up voltage, and a detector circuit configured to detect the stepped-up voltage generated by the pump circuit to control activation/d... | 02/26/2008 |
| 7333568 | Data slicer capable of calibrating current mismatch A data slicer includes a comparator coupled with an input signal and a reference signal for generating a sliced signal, a waveform generator for generating a calibration signal, a pulse extension device coupled to the comparator and the waveform generator for modify... | 02/19/2008 |
| 7330075 | Output impedance control circuit and control method thereof The invention provides an apparatus and a method for adjusting an output impedance of an output stage. The apparatus comprises a detector for outputting a direct current potential corresponding to the impedance of the output stage circuit. It also comprises a contro... | 02/12/2008 |
| 7321606 | Laser trim and compensation methodology for passively aligning optical transmitter A method includes a scheme for trimming and compensation for a laser emitter in a fiber optic link. Data models of laser performance are provided and used to determine a base power level. It is then confirmed that the base power level is satisfactory. If necessary, ... | 01/22/2008 |
| 7315187 | Comparator for input voltages higher than supply voltage A comparator has first and second current paths, each passing from an input through a transistor, through a current source to ground, the second current path also having a reference voltage drop element coupled in series with the second input. The gates of the trans... | 01/01/2008 |
| 7312651 | Cascode current mirror circuit operable at high speed A current mirror circuit includes a first transistor having a source node connected to a reference potential, a second transistor having a source node coupled to a drain node of the first transistor and a gate node connected to a first predetermined potential, an in... | 12/25/2007 |
| 7304525 | Level converter A level converter is disclosed. In one embodiment, the level converter includes a first and second input for applying a first voltage and first and second output terminals for providing a second voltage, a first RC element, and a second RC element, and a first contr... | 12/04/2007 |
| 7298182 | Comparator using differential amplifier with reduced current consumption A comparator circuit with reduced current consumption, and other circuits utilizing the same, are provided. The comparator circuit may achieve reduced current consumption by preventing current flow via a switching transistors responsive to the voltage level of the i... | 11/20/2007 |
| 7292083 | Comparator circuit with Schmitt trigger hysteresis character A circuit and a method are provided to produce a novel comparator with Schmitt trigger hysteresis character. The circuit includes a current source which controls the magnitude of current flow through this comparator circuit. It has a first logic device which is turn... | 11/06/2007 |
| 7285988 | Comparator circuit with offset control A semiconductor integrated circuit has: a differential amplifier circuit including a first MOS transistor connected between a first node and a common node and a second MOS transistor connected between a second node and the common n... | 10/23/2007 |
| 7279953 | Current switch and method of driving the same A method and apparatus for driving a current switch with a differential drive signal monitors both the temperature of the switch and the current through the switch. The method and apparatus dynamically control the amplitude of the drive signal as a function of the s... | 10/09/2007 |
| 7274625 | Display device An oscillator circuit includes (2n+1) inverters connected in series when n is a natural number, an integrator circuit having an input terminal connected to an output terminal of a (2n+1)-th inverter and an output terminal connected to an input terminal of a first in... | 09/25/2007 |
| 7271601 | Current fault detection for light emitters A device includes a light emitter, a current sensing resistance, a current generator, and detection circuitry. The current generator is connected to the light emitter and to the current sensing resistance. During a normal operating mode of the device, the current ge... | 09/18/2007 |
| 7250810 | Multi-mode charge pump drive circuit with improved input noise at a moment of mode change A multi-mode charge pump drive circuit has a multi-mode charge pump, a switch control circuit, a current regulation circuit, an error amplifier, a variable resistance unit, and a mode selection circuit. The multi-mode charge pump is operated with a plurality of mode... | 07/31/2007 |
| 7248081 | Slicer with large input common mode range A slicer with large input common mode range is provided. The slicer includes an input stage coupled to receive an input signal, a current source for providing current for the input stage, a self-biased load coupled to the input stage to provide an initial output sig... | 07/24/2007 |
| 7236518 | Deskewing differential repeater A device including an input to receive a differential waveform pair from a transmission line, the differential waveform pair including a first waveform and a second waveform. The device also includes a repeater to generate a refreshed first output waveform and a ref... | 06/26/2007 |
| 7236015 | Dynamic biasing circuit for continuous time comparators A method for dynamically adapting the biasing current for a fast switching CMOS comparator is achieved. The difference of the two input signals of said comparator controls the comparator's biasing current, where the biasing current is high only when the difference i... | 06/26/2007 |
| 7236016 | Low voltage comparator An integrated circuit comparator comprises a differential amplifier, a source follower circuit coupled to a gate terminal of a first transistor in the differential amplifier, and an output circuit. One or more source follower circuits may be utilized in connection w... | 06/26/2007 |
| 7234070 | System and method for using a learning sequence to establish communications on a high-speed nonsynchronous interface in the absence of clock forwarding A memory system includes a memory hub controller that sends write data to a plurality of memory modules through a downstream data bus and receives read data from the memory modules through an upstream data bus. The memory hub controller includes a receiver coupled t... | 06/19/2007 |
| 7233171 | Apparatus and method for transconductance stage with high current response to large signals A transconductance stage is provided. The transconductance stage includes a tail current source, a differential pair, and two current mirrors. The input to each of the current mirrors is connected to the drain of a separate one of the transistors in the differential... | 06/19/2007 |
| 7227399 | Detector of differential threshold voltage A differential threshold voltage level detection circuit receives a differential voltage pair as an input, applying each component of the differential pair to an individual voltage shifting circuit. Each voltage shifting circuit is configured with a regulated curren... | 06/05/2007 |
| 7227388 | Propagation delay characteristic comparator circuit A comparator circuit having improved operational characteristics. A predetermined voltage drop device is provided, such as an exemplary embodiment Schottky diode, having an anode connected to circuit power supply voltage and an output stage of the comparator and a c... | 06/05/2007 |
| 7224224 | Thin film semiconductor device and manufacturing method When n-channel thin film transistors(TFTs) and p-channel TFTs are formed on a polycrystalline silicon film formed on a glass substrate, a process is included in which P-dopant or N-dopant is introduced at the same time to the channel region of a part of the n-channe... | 05/29/2007 |
