Famous Patents
The first commercial microwave oven was nearly 6 feet tall and weighed in at 750 pounds.
PatentStorm News
Make the Most of Our Site
See this month's Top Inventors and Most Cited Patents.
Stay on top of the latest innovations by subscribing to an RSS feed.
Registered users: Manage your profile.
| Application No. | Application Title | Issue Date |
| 20120049958 | AMPLIFIER CIRCUIT An amplifier circuit may include an input differential pair that includes a first transistor and a second transistor, a positive input voltage being supplied to a gate terminal of the first transistor, a negative input voltage being supplied to a gate terminal of the se... | 03/01/2012 |
| 20120001691 | VARIABLE GAIN AMPLIFIER WITH REDUCED POWER CONSUMPTION A variable gain amplifier includes a first common mode (CM) node configured to receive a first differential signal of a pair of differential signals. A first regulator couples to the first CM node, the first regulator being configured to generate a first CM offset. A se... | 01/05/2012 |
| 20110025419 | DIFFERENTIAL AMPLIFIER WITH OFFSET VOLTAGE TRIMMING A differential amplifier that has a current supply and a differential current to voltage converter with a positive current input node, a negative current input node and a voltage output node, has offset voltage trimming. The voltage output node provides an output voltag... | 02/03/2011 |
| 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 |
| 20090267693 | RESISTOR SELF-TRIM CIRCUIT FOR INCREASED PERFORMANCE In a method and apparatus for trimming values of load resistors to reduce variations there between, a common mode feedback loop (CMFBL) included in a differential amplifier is switched from operating in a closed loop mode to operate in an open loop mode. The CMFBL inclu... | 10/29/2009 |
| 20090251216 | Common mode control circuitry for multi-stage operational amplifiers This disclosure relates to a common mode regulation in multi stage differential amplifiers.... | 10/08/2009 |
| 20090224831 | CANCELLATION OF COMMON MODE OSCILLATION IN RF CIRCUITS A multistage RF amplifier amplifies RF signals used for communication in a WLAN communications system. The multistage RF amplifier comprises a first amplifier circuit coupled to a second amplifier circuit to maximize amplification. A common mode of the first amplifier c... | 09/10/2009 |
| 20090212865 | Differential Audio Amplifier A differential audio amplification apparatus with common mode rejection is shown, having a first input current path (401) and a second input current path (402) with a shunting input resistance (400) therebetween. The apparatus also has a first outpu... | 08/27/2009 |
| 20090212864 | PREAMPLIFIER FOR RECEIVER AND METHOD THEREOF A preamplifier used in a receiver is provided. The preamplifier comprises an input circuit and an output circuit. The input circuit receives an input differential voltage pair, pulls it down when the common voltage of the input differential voltage pair is higher than a... | 08/27/2009 |
| 20090154255 | Symmetrically operating single-ended input buffer devices and methods Embodiments are described including those pertaining to an input buffer having first and second complementary input terminals. One such input buffer has a symmetrical response to a single input signal applied to the first input terminal by mimicking the transition of a ... | 06/18/2009 |
| 20090115518 | DIFFERENTIAL AMPLIFIER WITH INPUT STAGE INVERTING COMMON-MODE SIGNALS To eliminate common-mode components in differential input signals without the necessity of introducing a transformer and a special feedback loop for eliminating common-mode components, a differential amplifier (1) comprises a first input stage (11) for rec... | 05/07/2009 |
| 20090115521 | High CMR amplifier topology An amplifier topology includes an input stage comprising a differential pair which conducts respective output currents in response to a differential input signal. Bias current sources provide the pair's tail current and respective bias currents for the input stage in re... | 05/07/2009 |
| 20090115522 | Low power, low noise amplifier system A low power, low noise amplifier system includes at least one amplifier having first and second differential input terminals, first and second differential output terminals and providing a differential output; first and second input capacitors interconnected with the fi... | 05/07/2009 |
| 20090108936 | Combination trim and CMFB circuit and method for differential amplifiers A differential amplifier (10-1,2) includes an input stage (7) including first (M1) and second (M2) input transistors and first (4A) and second (4B) load devices. Sources of the first and second input transistors are conne... | 04/30/2009 |
| 20090085662 | Common mode voltage extraction circuit Consistent with the present invention, there is provided a circuit for extracting a common mode voltage of an input signal. The device may include an operational amplifier having an output, at least one negative input and at least one positive input, a first transistor,... | 04/02/2009 |
| 20090067545 | Receiver of high speed digital interface A receiver of a high speed digital interface includes at least one differential amplifier, a pair of resistive elements, a current source and a pair of transistors. The differential amplifier receives a small differential signal at a pair of input terminals and outputs ... | 03/12/2009 |
| 20090066417 | High bandwidth apparatus and method for generating differential signals An apparatus and method for generating differential signals. The apparatus includes a first operational amplifier receiving a first signal, a second operational amplifier receiving a second signal, and a first transistor. The first transistor includes a first gate, a fi... | 03/12/2009 |
| 20090058525 | Common-mode bandwidth reduction circuit and method for differential applications An amplifier driver circuit (10) includes first (11-1) and second (11-2) feedback amplifiers including first (14-1) and second (14-2) upper current mirrors, respectively, and first (16-1) and s... | 03/05/2009 |
| 20090058526 | COMMON MODE FEEDBACK AMPLIFIER WITH SWITCHED DIFFERENTIAL CAPACITOR A structure and related design structure for providing a common mode feedback to a differential amplifier are disclosed. A common mode feedback amplifier is connected to a differential amplifier to provide common mode feedback voltage thereto. An input of the common mod... | 03/05/2009 |
| 20090058528 | Pre-Amplifier for a Receiver and a Method therefor A pre-amplifier for a receiver is provided. The pre-amplifier includes a first and a second input operational amplifiers, an output module, a first and a second feedback circuits. The first and the second input operational amplifiers amplify an input differential voltag... | 03/05/2009 |
| 20090051433 | DIFFERENTIAL SENSING WITH HIGH COMMON MODE REJECTION A differential operation circuit that uses the differential input signals to generate a reference voltage that fluctuates with the common mode voltage of the differential input signals. The reference voltage includes a common mode component that generally follows the co... | 02/26/2009 |
| 20090045876 | LOW NOISE, LOW POWER, HIGH LINEARITY DIFFERENTIAL AMPLIFIER WITH A CAPACITIVE INPUT IMPEDANCE A low noise, low power differential two-stage amplifier includes a first stage comprising a pair of electrical devices that sense an input signal difference across the pair of electrical devices; and a control feedback loop operatively connected to the first stage, wher... | 02/19/2009 |
| 20090027125 | Common mode rejection calibration method for difference amplifiers A common mode rejection calibration scheme for use with a difference amplifier having an associated signal path. A signal is generated which varies with the common mode voltage of the differential input voltage applied to the amplifier. This signal is scaled and coupled... | 01/29/2009 |
| 20090009248 | INPUT BUFFER WITH OPTIMAL BIASING AND METHOD THEREOF A method and circuit of a biased input buffer is described to maximize the quality in the output signals. The input buffer includes a first stage for receiving differential input signals and generating differential internal signals as biased in response to an averaging ... | 01/08/2009 |
| 20090009247 | DIFFERENTIAL AMPLIFIER AND SAMPLING AND HOLDING CIRCUIT Disclosed is a differential amplifier including: first and second transistors each having a first gate, a second gate, a source, and a drain open to a drain side, the first gate and the second gate being controlled independently, a differential input being supplied to b... | 01/08/2009 |
| 20080315951 | CLASS AB DIFFERENTIAL AMPLIFIER WITH OUTPUT STAGE COMMON MODE FEEDBACK A differential amplifier includes an output stage, a first common mode feedback circuit; and a current source. The output stage includes first and second complimentary output terminals. The first common mode feedback circuit is operable to determine an average voltage a... | 12/25/2008 |
| 20080297253 | Single-Ended Gain Stage And Disk Drive An electrical apparatus comprising an amplifier having a first input, a second input, and an output. The apparatus further comprises a first electrical path coupled to the first input and having a first resistance and a first electrical path coupled to the second input ... | 12/04/2008 |
| 20080284513 | FULLY DIFFERENTIAL AMPLIFIER A fully differential amplifier includes: an N-stage amplifier including first to Nth amplifier stages, where N is a positive integer greater than or equal to 2, the first to Nth amplifier stages being cascaded in sequence so as to generate a pair of differential output ... | 11/20/2008 |
| 20080272842 | Calibrated feedback A differential feedback amplifier is provided with a feedback network wherein that feedback network is adjustable so as to improve the PSRR of the amplifier. In another aspect of the present invention, a differential feedback amplifier is provided with a feedback networ... | 11/06/2008 |
| 20080246543 | Common mode feedback for large output swing and low differential error A differential amplifier includes a differential input pair (2A) coupled to a folded cascode stage (2B) and a common mode feedback circuit (34) including a tracking circuit (30A) coupled to first (Vout−) and second (Vout+ 10/09/2008 | |
| 20080231365 | OPERATIONAL AMPLIFIER An operational amplifier including an input amplifier configured to amplify at least one differential input signal, a first common mode feedback amplifier configured to amplify a first common mode voltage, a cascode amplifier configured to cascode-amplify output signals... | 09/25/2008 |
| 20080224776 | COMMON-MODE VOLTAGE CONTROLLER A common-mode voltage controller for adjusting common-mode voltages between a first buffer and a second buffer at a subsequent stage or a preceding stage of the first buffer in a signal transmission circuit, comprising: a first reference voltage generation unit for gene... | 09/18/2008 |
| 20080218266 | Amplifier circuit with input terminals thereof connected to sampling capacitors Sampling capacitors are connected respectively to a pair of differential input terminals of an operational amplifier. The sampling capacitors sample input signals. Source terminals and drain terminals of dummy switches are connected respectively to paths connecting the ... | 09/11/2008 |
| 20080204138 | FULLY DIFFERENTIAL AMPLIFIER WITH CONTINUOUS-TIME OFFSET REDUCTION A fully differential amplifier circuit according to one embodiment includes a first section for generating first and second output signals on first and second outputs from first and second input signals; a first feedback loop coupled to the first section, the first feed... | 08/28/2008 |
| 20080157873 | FULLY DIFFERENTIAL AMPLIFICATION DEVICE An auxiliary current source is provided that includes MOS transistors feeding startup auxiliary current to the input portion of an output common mode voltage generation circuit amplifying the output of a differential amplifier and generating an output common voltage, an... | 07/03/2008 |
| 20080143439 | Fully-differential amplifier A fully-differential amplifier able to operate at a low power supply voltage and provided with a common-mode signal suppression function is disclosed. This fully-differential amplifier is provided with a first fully-differential amplifier configured by a single-stage co... | 06/19/2008 |
| 20080143441 | AMPLIFIER HAVING PLURALITY OF DIFFERENTIAL PAIRS AND COMMUNICATION SYSTEM EQUIPPED WITH SAME A first differential pair and a second differential pair each receive differential input signals. The first differential pair and the second differential pair are connected such that the second differential pair receives part of a tail current of the first differential ... | 06/19/2008 |
| 20080116975 | Class AB differential current conveyor input stage for a fully differential current feedback amplifier Disclosed herein is technology for, among other things, a current feedback fully differential amplifier. The amplifier includes an input stage operable to sense an input current at a first terminal and a second terminal. The input stage includes a first buffer having an... | 05/22/2008 |
| 20080074189 | Continuous time common-mode feedback module and method with wide swing and good linearity A continuous time common mode feedback module is capable of operating in a wide range of input voltages. The common mode feedback module includes a common mode detector and an amplifier for computing and amplifying the difference of a reference voltage and a common mode... | 03/27/2008 |
| 20080068083 | Continuous time common mode feedback circuit, system, and method Embodiments of the present invention provide a low voltage continuous time common mode feedback (CMFB) module, for low voltage operational amplifiers, providing good linearity, wide bandwidth and low systematic offset. The common mode feedback module includes a controll... | 03/20/2008 |
