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...Daniel Webster invented a "bull plow" to pull out tree stumps. It didn't catch on because it was huge and required four oxen to pull it!
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| Application No. | Application Title | Issue Date |
| 20120049960 | PRE-DRIVER AND DIGITAL TRANSMITTER USING THE SAME A pre-driver includes first to fourth transistors and first and second impedance elements. The first transistor, coupled between the first output terminal and a first node, has a gate coupled to the first differential input terminal. The second transistor, coupled betwe... | 03/01/2012 |
| 20120049957 | OPERATIONAL AMPLIFIER WITH OVERDRIVING CIRCUIT AND METHOD FOR SAME Disclosed is an operational amplifier including an overdriving circuit capable of reaching a target voltage within an operation time by outputting a higher voltage than the target voltage when an RC delay time is greater. The operational amplifier may including an overd... | 03/01/2012 |
| 20120019304 | Mixer for Canceling Second-Order Inter-Modulation Distortion and Associated Transconductor Circuit A transconductor circuit used in a mixer for canceling second-order inter-modulation distortion includes a first transistor and a second transistor, of which the base (gate) ends coupled to a first input end and a second input end, for receiving a differential input sig... | 01/26/2012 |
| 20120019324 | Amplifier With Improved Input Resistance and Controlled Common Mode An amplifier includes a first pair of transistors (the first pair) that defines a first output, each transistor of the first pair having a gate coupled to a first input terminal; a second pair of transistors (the second pair) that defines a second output, each transisto... | 01/26/2012 |
| 20120007677 | Class AB Operational Amplifier and Output Stage Quiescent Current Control Method A class AB operational amplifier includes: a first transistor, for generating a first current; a second transistor, where a second source voltage of the second transistor is equal to a first source voltage of the first transistor, for generating an output stage quiescen... | 01/12/2012 |
| 20110298541 | RAIL-TO-RAIL INPUT STAGE CIRCUIT WITH DYNAMIC BIAS CONTROL An improved rail-to-rail (R-R) input stage circuit with dynamic bias control is described. Input stage circuit includes a differential pair circuit, a level shifted differential pair and a bias control circuit. The differential pair circuit and the level shifted differe... | 12/08/2011 |
| 20110291589 | MULTI-INPUT DIFFERENTIAL AMPLIFIER AND LIGHT EMITTING ELEMENT DRIVING DEVICE A multi-input differential amplifying device of the present invention includes: a differential amplifier having an inverting input terminal and a non-inverting input terminal; and an input portion configured to apply a first input voltage to a first input terminal that ... | 12/01/2011 |
| 20110267145 | COMPARISON APPARATUS AND SPEED-UP METHOD FOR COMPARATOR A comparison apparatus and a speed-up method for comparator are provided. The comparison apparatus consists of a comparator and a bias modulator. The bias modulator receives input signals of the comparator to provide a set of output signals modulated according to the in... | 11/03/2011 |
| 20110254626 | AMPLIFICATION CIRCUIT An amplification circuit may include an input differential pair including a first transistor receiving a positive input voltage and a second transistor receiving a negative input voltage, a first resistor that generates a difference current corresponding to a difference... | 10/20/2011 |
| 20110199157 | DIFFERENTIAL AMPLIFIER, METHOD FOR INVERTING OUTPUT POLARITY OF THE SAME, AND SOURCE DRIVER A differential amplifier includes: an output amplifier circuit; a bias circuit; and a pulse applying circuit. The output amplifier circuit receives a positive gradation voltage and a negative gradation voltage alternately by an input stage circuit and supplies a drive v... | 08/18/2011 |
| 20110181359 | APPARATUS AND METHOD FOR PROVIDING LINEAR TRANSCONDUCTANCE AMPLIFICATION Apparatus and methods are disclosed, such as those involving a transconductance amplifier. One such apparatus includes a transconductance amplifier comprising an input to receive an input voltage signal, and an output to provide an output current signal at least partly ... | 07/28/2011 |
| 20110163808 | AMPLIFIER WITH IMPROVED INPUT RESISTANCE AND CONTROLLED COMMON MODE An amplifier includes a first pair of transistors (the first pair) that defines a first output, each transistor of the first pair having a gate coupled to a first input terminal; a second pair of transistors (the second pair) that defines a second output, each transisto... | 07/07/2011 |
| 20110156816 | Biasing Circuit for Differential Amplifier The invention concerns a biasing circuit for controlling the current flowing through a differential pair (102, 104) comprising: a first branch comprising a first resistor (306), a first transistor device (308) and a second transistor device (310<... | 06/30/2011 |
| 20110130109 | DIFFERENTIAL AMPLIFIER CIRCUIT AND WIRELESS RECEIVING APPARATUS A differential amplifier circuit includes a source follower circuit to which is input one of the differential signals and a common source circuit that is connected in series with the source follower circuit and to which is input the other of the differential signals.... | 06/02/2011 |
| 20110109390 | TRANSCONDUCTOR CIRCUIT A transconductor circuit, particularly according to the multi-tanh principle, having a first input node and a second input node, a first differential amplifier coupled to the first and second input nodes, and having a first offset voltage, and a second differential ampl... | 05/12/2011 |
| 20110050343 | BIAS CIRCUIT AND AMPLIFIER PROVIDING CONSTANT OUTPUT CURRENT FOR A RANGE OF COMMON MODE INPUTS Bias circuits, amplifiers and methods are provided, such as those for providing bias signals over a range of common mode inputs for an amplifier to output a constant current. One example of a bias circuit is configured to generate a bias signal having a voltage magnitud... | 03/03/2011 |
| 20100327919 | DIFFERENTIAL AMPLIFIER CIRCUIT A differential amplifier main circuit amplifies, while first voltage is applied to drains of first and second transistors via a load circuit and second voltage is applied to source of third transistor, a difference between voltages applied to gates of the first and seco... | 12/30/2010 |
| 20100308914 | LOW NOISE AMPLIFIER A low noise amplifier including an amplifier kernel circuit and a DC bias unit is provided. The amplifier kernel circuit is used for receiving a single input signal or a differential input signal so as to output a differential output signal. The DC bias unit is coupled ... | 12/09/2010 |
| 20100248648 | AMPLIFIER CIRCUIT AND TRANSCEIVER An amplifier circuit includes: a field-effect transistor including a first gate, a first source and a first drain, the first gate receiving one of differential signals, and the first source being connected to a reference potential node; a field-effect transistor includi... | 09/30/2010 |
| 20100237944 | Amplifier System With Digital Adaptive Power Boost An amplifier system with digital adaptive power boost includes a charge pump for providing a power supply to an amplifier. The charge pump may switch between a fixed input DC voltage and a boosted value for a certain period of time in response to an increase in an input... | 09/23/2010 |
| 20100237942 | COMMON-GATE COMMON-SOURCE AMPLIFIER Techniques for integrating a common-source and common-gate amplifier topology in a single amplifier design. In one aspect, an input voltage is provided to both a common-source amplifier and a common-gate amplifier. The output voltages of the common-source amplifier and ... | 09/23/2010 |
| 20100194477 | OP-AMP CIRCUIT An OP-amp circuit includes a first circuit unit configured to generate an operating voltage in response to an enable signal, a second circuit unit configured to amplify a difference between respective voltages received through an inverting terminal and a non-inverting t... | 08/05/2010 |
| 20100194543 | ACCURATE PERSISTENT NODES A timing circuit that can function as an accurate persistent node in an RFID tag includes a power capture circuit for capturing power from a power source, and a counter circuit that provides a count representing a progression of time. The count can then be compared to a... | 08/05/2010 |
| 20100182088 | OPERATIONAL AMPLIFIER An operational amplifier has an input stage that branches a first current according to first and second input signals. An output stage generates an output signal from a second current and one of the branch currents in the input stage. A first transistor supplies the fir... | 07/22/2010 |
| 20100171554 | OFFSET CANCELLATION FOR DC ISOLATED NODES Offset voltages developed on floating nodes on inputs to high-performance amplifiers that are DC isolated from the data signals input to amplifiers are cancelled by connecting a highly resistive element between the input node and a predetermined potential, particularly ... | 07/08/2010 |
| 20100164627 | COMPARATOR CIRCUIT FOR COMPARING THREE INPUTS A comparator circuit. A comparator circuit may include a differential amplifying unit to amplify a difference between a voltage at a first node and a voltage at a second node and/or output a resultant voltage, and/or a current source to supply a first bias current to a ... | 07/01/2010 |
| 20100164624 | METHOD FOR REDUCING OFFSET VOLTAGE OF OPERATIONAL AMPLIFIER AND THE CIRCUIT USING THE SAME The invention provides an operational amplifier. In one embodiment, the operational amplifier includes an input stage circuit, a feedback circuit, a fixed stage circuit, and an output stage circuit. The input stage circuit receives a positive input voltage and a negativ... | 07/01/2010 |
| 20100156536 | SYSTEMS AND METHODS FOR SELF-MIXING ADAPTIVE BIAS CIRCUIT FOR POWER AMPLIFIER Systems and methods for providing a self-mixing adaptive bias circuit that may include a mixer, low-pass filter or a phase shifter, and a bias feeding block. The self-mixing adaptive bias circuit may generate an adaptive bias signal depending on input signal power level... | 06/24/2010 |
| 20100148871 | SYSTEMS AND METHODS FOR AN ADAPTIVE BIAS CIRCUIT FOR A DIFFERENTIAL POWER AMPLIFIER Systems and methods for providing an adaptive bias circuit that may include a differential amplifier, low-pass filter, and common source amplifier or common emitter amplifier. The adaptive bias circuit may generate an adaptive bias output signal depending on input signa... | 06/17/2010 |
| 20100141342 | AMPLIFICATION CIRCUIT AND METHOD THEREFOR In one embodiment, an amplification circuit charges a filter capacitor (14) and an input capacitor (12) with a substantially constant current and subsequently forms a delay prior to operating the amplification circuit to amplify input signals.... | 06/10/2010 |
| 20100066450 | High-Speed Low-Power Differential Receiver A low-voltage differential communication system includes a low- and programmable-swing voltage-mode transmitter that delivers a low-voltage differential signal to a receiver via differential channel. The receiver employs two input transistors, each in a common-gate conf... | 03/18/2010 |
| 20100045382 | BIAS CIRCUIT AND SEMICONDUCTOR INTEGRATED CIRCUIT INCLUDING THE BIAS CIRCUIT A plurality of analog signals are input to input terminals of an analog signal processing circuit ANA2 via respective capacitors C. In a bias circuit Bias for supplying a bias voltage such as a signal ground of the analog signals to the analog signal processing c... | 02/25/2010 |
| 20100013558 | Driving Circuit Capable of Enhancing Response Speed and Related Method A driving circuit of enhancing response speed is disclosed. The driving circuit includes an operational amplifier and a slew rate enhancement unit. The operational amplifier is utilized for generating a driving voltage according to an input voltage. The slew rate enhanc... | 01/21/2010 |
| 20100007417 | Differential amplifier with symmetric circuit topology A differential amplifier circuit is provided with a first input stage including a transistor pair of a first conductivity type, of which transistor pair receives differential input signals; a first output stage connected to the first input stage; a second input stage in... | 01/14/2010 |
| 20100001797 | DIFFERENTIAL AMPLIFIER A differential amplifier circuit at the input stage is configured with a twin differential type having a first differential amplifier circuit (11) and a second differential amplifier circuit (12), respective outputs of which are received by a first and a s... | 01/07/2010 |
| 20090302947 | SEMICONDUCTOR DEVICE A semiconductor device including: a gain control circuit; a first circuit which is controlled a gain to be constant by the gain control circuit; and a bias circuit connected to the first circuit, wherein the first circuit including a first transistor; and a load resista... | 12/10/2009 |
| 20090289715 | AMPLIFIER WITH IMPROVED LINEARIZATION According to some embodiments, an amplifier may include a transconductance stage, a tail current source stage, and an adaptive biasing stage. The transconductance stage may be configured to receive an input voltage. The tail current source stage may be configured to pro... | 11/26/2009 |
| 20090289716 | Amplifier circuit having dynamically biased configuration Methods and corresponding systems for amplifying an input signal include inputting first and second differential input signals into first and second circuit legs, respectively, wherein the first circuit leg includes a first transistor coupled in series with a first vari... | 11/26/2009 |
| 20090278604 | Operational Amplifier and Related Method of Enhancing Slew Rate An operational amplifier capable of enhancing slew rate is disclosed. The operational amplifier includes a first current generator for generating a first bias current, a second current generator for generating a second bias current, an amplification stage, coupled to th... | 11/12/2009 |
| 20090267695 | Class AB output stage with programmable bias point control A class AB output stage includes a driver to generate a first drive signal and a second drive signal, and two bias voltage sources to provide two bias voltages to level shift the first and second drive signals, in order to drive a pair of high side and low side transist... | 10/29/2009 |
