Famous Patents
The first match was accidentally discovered in 1826 when John Walker scraped a stick with chemicals on the end against a stone floor.
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.
| Number | Title | Issue Date |
| 8098099 | Broadband high output current output stage 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... | 01/17/2012 |
| 8022764 | Differential amplifier A differential amplifier unit and a feedback unit are provided. The differential amplifier unit includes first and second transistors and first to fourth loads. Each of the first and second transistors is provided with a current input end, a current output end conne... | 09/20/2011 |
| 7898333 | Operational amplifier The present invention relates generally to an operational amplifier. In one embodiment, the present invention is an operational amplifier including a transimpedance input stage, the transimpedance input stage including a first stage connected to a first resistor and... | 03/01/2011 |
| 7893767 | Operational amplifier and integrating circuit An operational amplifier in accordance with one embodiment of the present invention includes a differential amplifier circuit to perform differential amplification of an input signal with respect to a reference potential Vbias, an output circuit to output a signal a... | 02/22/2011 |
| 7876155 | Transimpedance amplifier with distributed control of feedback line An apparatus includes an electronic amplifier and an electrical feedback line, a plurality of electrical sources, and an electronic controller. The electrical feedback line connects an output of the electronic amplifier to an input thereof. The electrical sources co... | 01/25/2011 |
| 7852158 | Operational amplifier An operational amplifier includes, between an input and an output of an operational amplifier (an operational amplification stage) 10, a feedback capacitor 34 connected in negative feedback, a phase control circuit 100 having a resistor element ... | 12/14/2010 |
| 7746172 | Linearized differential transimpedance amplifier The present invention relates to a transimpedance amplifier circuit that includes a linearized differential transimpedance amplifier, a detector, and dynamic current source circuitry, which diverts common mode currents from feedback resistors in the linearized diffe... | 06/29/2010 |
| 7741910 | Capacitor gain-boost circuit A circuit is disclosed that comprises a capacitor gain-boost circuit and an amplifier coupled to capacitor gain-boost circuit. A capacitor gain-boost circuit comprises of capacitor, gain-boost amplifier and biasing circuit. The gain-boost amplifier and capacitor pro... | 06/22/2010 |
| 7737783 | Differential amplifier A differential amplifier comprises a left amplifier having transistors, a right amplifier having transistors, a negative feedback network having a resistor, and a negative feedback network having a transformer with a center tap. Phase compensation networks comprisin... | 06/15/2010 |
| 7733180 | Amplifier for driving external capacitive loads An apparatus having a zero-pole that is dependant on an equivalent series resistance (ESR) and a load is provided. The apparatus comprises an amplifier stage that receives a first input voltage and a bias voltage, an intermediate stage that is coupled to the output ... | 06/08/2010 |
| 7719361 | Differential amplifier with current source controlled through differential feedback A differential amplifier includes a first electrical path formed between a first transistor and a first load impedance; a second electrical path formed between a second transistor and a second load impedance; a tail-current transistor coupled to the first and second... | 05/18/2010 |
| 7679445 | Independent dominant pole compensation of two loops using one compensating element Disclosed is a differential amplifier system that maintains high speed characteristics of the differential amplifier while providing stability from a common-mode loop by using dominant pole compensation. The disclosed system includes a first and second transconducta... | 03/16/2010 |
| 7659780 | Gain control circuit A gain control circuit including a resistor with a first terminal and a second terminal; an operational amplifier with an inverting terminal thereof electrically coupled to said first terminal of said resistor; a non-inverting terminal thereof; and an output termina... | 02/09/2010 |
| 7652536 | Amplifier circuit with internal zeros An amplifier circuit with internal zeros provides a second pole in addition to a first pole and two zeros such that the second pole can prevent excessive gain at high frequency, so as to have high-frequency noise under control. ... | 01/26/2010 |
| 7639079 | Techniques for designing wide band low noise amplifiers A wideband amplifier having an amplifier input terminal and an amplifier output terminal includes at least one transistor coupled to the amplifier input terminal and an impedance element coupled between the amplifier input terminal and the amplifier output terminal.... | 12/29/2009 |
| 7605657 | Multi-mode amplifier arrangement and method for controlling an amplifier arrangement A multi-mode amplifier arrangement comprises an amplifier having a plurality of field effect transistors selectable in response to a control signal at a control terminal, said plurality of field effect transistors coupled to an input terminal to receive a signal to ... | 10/20/2009 |
| 7583146 | Balanced differential cross-coupled transconductance amplifier for a multiplexor A balanced, differential, cross-coupled amplifier including an input stage for receiving a differential input and including an input transconductance differential pair and a feedback transconductance differential pair; and an output stage responsive to the input sta... | 09/01/2009 |
| 7576610 | Operational amplifier of class AB A class AB operational amplifier is provided that includes first and second input transistors respectively coupled between first and second internal nodes and a first common node, first and second input stage load transistors diode connected and respectively coupled... | 08/18/2009 |
| 7560988 | Integrated circuit system for line regulation of an amplifier An integrated circuit system is provided including forming a differential pair; reducing a mismatch in the differential pair by: coupling an amplifier to the differential pair; and coupling a local feedback network to the amplifier in which referencing the local fee... | 07/14/2009 |
| 7554403 | Gainboost biasing circuit for low voltage operational amplifier design Bias current generation circuits and systems are disclosed. In one embodiment, a gain boosting cascode system comprises a cascode based on a transconductance amplifier and a current buffer and a gain booster circuit coupled to the cascode optimally boosting a gain o... | 06/30/2009 |
| 7538615 | Differential feedback amplifier circuit with cross coupled capacitors The present invention relates to a differential feedback amplifier circuit with cross coupled capacitors. Wherein, the first and second input terminals of a source follower are respectively coupled to the first and second output terminals of a differential amplifier... | 05/26/2009 |
| 7514999 | Voltage-to-current converter Circuits and methods to achieve a voltage-to-current converter having low noise and a high linearity are disclosed. In a preferred embodiment the converter has been used as a Gm integrator. The core of the invention is an operational transconductance amplifier (OTA)... | 04/07/2009 |
| 7495512 | Differential amplifier, data driver and display device A differential amplifying circuit capable of reducing amplitude-difference deviation over a full range of grayscale voltages inclusive of voltages in the vicinity of power-supply voltage includes first and second differential pairs of mutually different polarities, ... | 02/24/2009 |
| 7477103 | Amplifier circuit An amplifier has a voltage to current converter coupled between a first potential and a reference potential and includes a control input coupled to a voltage at an input of the amplifier for converting the voltage at the amplifier input into a corresponding output c... | 01/13/2009 |
| 7474154 | Bias device clamping circuit for fast over-range recovery A gain-boosted telescopic amplifier (100) includes clamping circuits for the bias devices to ensure fast over-voltage recovery. In one embodiment, the gain-boosted telescopic amplifier includes an input pair of NMOS transistors (MP1, MN1... | 01/06/2009 |
| 7446611 | Fully differential amplifier device with output-common-mode feedback and control method thereof A fully differential amplifier device includes a first input and a second input, a first output and a second output, and a differential input stage, provided with a first input transistor and a second input transistor. The first input and the first output and the se... | 11/04/2008 |
| 7443237 | Folded cascode amplifier having improved slew performance A folded cascode amplifier having improved slew comprises an input differential transistor pair circuit, a cascode branch circuit coupled to the differential pair circuit, and a boost circuit for increasing branch current when the amplifier is in a slew condition. T... | 10/28/2008 |
| 7436216 | Method and apparatus for a direct current (DC) coupled input buffer A method and apparatus for combining an alternating current (AC) coupling technique with a low frequency restoration technique to provide AC coupling with low frequency restoration of the attenuated low frequency content. The low frequency restoration circuit operat... | 10/14/2008 |
| 7436262 | Highly linear variable gain amplifier Disclosed are systems and methods which provide very linear amplification of signals using a linearized transconductance circuit. A transconductance amplifier configuration is shown which provides highly linearized operation utilizing a Darlington pair feedback circ... | 10/14/2008 |
| 7429882 | AC-DC input buffer An inverting input buffer that uses the best features of an AC input buffer (low delay, high speed, high input voltage swing range) and a DC input buffer (stability, reliability, ‘automatic’ high and low data setup, input VIL and VIH “Voltage Input Low” and ... | 09/30/2008 |
| 7423457 | Fast settling current steering circuit A selector switch may be controlled by a single-ended control signal for steering a current through a load or through an auxiliary line. The selector switch may include a first terminal to be coupled to the load, and a second terminal to be connected to the auxiliar... | 09/09/2008 |
| 7423482 | Circuit configuration having a feedback operational amplifier The present invention relates to a circuit configuration (10) having a feedback operational amplifier (AMP) for amplifying an input signal (Vin) input into the circuit arrangement (10) and outputting the amplified input signal as an output signal (Vout... | 09/09/2008 |
| 7423479 | Offset canceller for compensating for offset in signal output An offset canceller outputs a signal during its offset compensating operation and compensates for the offset by capacitance or resistance devices connected externally to an operational amplifier. A driving circuit includes plural output circuits #1 to #n+1 fo... | 09/09/2008 |
| 7420423 | Active balun device An active balun device is provided. The active balun device includes: a differential input portion for receiving an external single input signal to output two complementary differential signals; and a differential amplifier connected to the differential input portio... | 09/02/2008 |
| 7414467 | Circuit configuration having a feedback, fully-differential operational amplifier The present invention relates to a circuit configuration having a feedback operational amplifier (AMP), which is implemented as fully differential, for amplifying an input signal differentially input to the circuit configuration and for outputting the amplified inpu... | 08/19/2008 |
| 7414464 | Op driver with the function of canceling op offset An operational amplifier driver capable of canceling an offset voltage of an operational amplifier includes the operational amplifier, first to third switches and a capacitor. The operational amplifier has a chopper, first and second input terminals and an output te... | 08/19/2008 |
| 7411453 | Tail-current steering circuit and method for rail-to-rail operational amplifier input stage An amplifier includes first and second pairs of differentially coupled input transistors. The first current mirror generates a reference current which is mirrored by a second current mirror to produce a mirrored reference current. Current steering circuitry steers t... | 08/12/2008 |
| 7405623 | Sensing circuit A sensing circuit capable of detecting very low current pulses of the order of 10's and 100's of micro amps. The sensing circuit comprises a common gate amplification stage capable of amplifying a sensed current, a comparison stage having as an input the amplified s... | 07/29/2008 |
| 7405625 | Common-mode control structures and signal converter systems for use therewith Control structures are provided to accurately maintain amplifier common-mode levels at the predetermined level of a common-mode reference voltage Vcm. The disclosed control structures provide amplifier feedback along a first feedback path that is configur... | 07/29/2008 |
| 7403067 | Compensation circuit for amplifiers having multiple stages An amplifier circuit comprises a first capacitance having one end that communicates with an input of a first amplifier stage. An amplifier has a first gain, an input that communicates with an opposite end of the first capacitance, and an output. A second capacitance... | 07/22/2008 |
