Did You Know...
...that one person who claimed to be the inventor of the television is Russian emigre Vladimir Zworykin? In 1929 David Sarnoff, founder of RCA, asked Zworykin what it would take to develop TV for commercial use. He said: a year and a half and $100,000. In reality, it took 20 years and $50 million! Before his death in 1982 at the age of 92, Zworykin said of his invention: "The technique is wonderful. It is beyond my expectations. But the programs! I would never let my children even come close to this thing."
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| Application No. | Application Title | Issue Date |
| 20100007420 | Operational amplifier An operational amplifier includes an input stage amplifier that receives an input signal, an output stage amplifier that amplifies a signal output from the input stage amplifier and outputs the signal, a capacitor that is connected between an input node and an output no... | 01/14/2010 |
| 20090310979 | ELECTRONIC CIRCUIT AND COMMUNICATION SYSTEM An electronic circuit includes: a differential amplifier circuit into which a digital input signal and a reference signal are fed; a feedback circuit outputting an average of amplitude of the input signal; and a peak holding circuit outputting a signal held based on an ... | 12/17/2009 |
| 20090289714 | 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 a s... | 11/26/2009 |
| 20090284315 | 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 (a r... | 11/19/2009 |
| 20090195311 | INDEPENDENT DOMINANT POLE COMPENSATION OF TWO LOOPS USING ONE COMPENSATION 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 transconductance ... | 08/06/2009 |
| 20090195312 | 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 comprising a ... | 08/06/2009 |
| 20090179700 | AC Coupling Circuits Including Resistive Feedback and Related Methods and Devices An integrated circuit device may include an amplifier having an amplifier input configured to receive an input signal with the amplifier being configured to provide an amplifier output signal at an amplifier output responsive to the input signal received at the amplifie... | 07/16/2009 |
| 20090179699 | FULLY DIFFERENTIAL COMPARATOR AND FULLY DIFFERENTIAL AMPLIFIER A first to a fourth sampling switch (1a to 1d), a first to a fourth sampling capacitance (4 to 7), and a first and a second charge redistribution switch (2a, 2b) are provided on the input side of a di... | 07/16/2009 |
| 20090160961 | AMPLIFIER CIRCUIT In a first operational amplifier, an input signal is input to the negative input terminal, a reference voltage is input to the positive input terminal, a feedback path from the output terminal to the negative input terminal is formed, and the input signal is amplified b... | 06/25/2009 |
| 20090140808 | 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 terminal th... | 06/04/2009 |
| 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 |
| 20090115523 | DISCRETE TIME AMPLIFIER CIRCUIT AND ANALOG-DIGITAL CONVERTER The present invention is intended to attain simplified circuit configuration and low current consumption in a discrete time amplifier circuit and an AD converter, to improve the convergence from the transient response state to the steady state of the amplifier circuit a... | 05/07/2009 |
| 20090115516 | NAUTA OPERATIONAL TRANSCONDUCTANCE AMPLIFIER Provided is an operational transconductance amplifier (OTA). An existing Nauta transconductor used to implement a high frequency Gm-C filter integrated circuit (IC) is analyzed by a new method and from a new perspective to remove extra components and divide roles of rem... | 05/07/2009 |
| 20090108937 | LOW NOISE AMPLIFIER AND DIFFERENTIAL AMPLIFIER In a double-loop negative feedback low noise amplifier having double negative feedback paths by a feedback transformer and a feedback resistor added to a cascode amplifier comprising transistors and a resistor, a phase compensation circuit comprising a capacitor and a r... | 04/30/2009 |
| 20090108929 | Apparatuses and methods for providing offset compensation for operational amplifier Apparatuses and methods for providing offset compensation include a primary amplifier which includes a first output, a second output, a first load input, and a second load input, a first feedback loop connected to the primary amplifier and which includes a first switch ... | 04/30/2009 |
| 20090096524 | Differential amplification circuit and manufacturing method thereof A differential amplification circuit and a method corrects an offset voltage derived from a variance in resistances. With first and second input terminals brought to the same potential and set to a potential different from a reference potential, the resistance value of ... | 04/16/2009 |
| 20090085663 | Transconductor Having High Linearity and Programmable Gain and Mixer using the Same A mixer having high linearity and an associated transconductor combining programmable gain amplifier and mixer functions are provided. The transconductor includes first and second resistors, a differential amplifier, first and second feedback circuits, and first and sec... | 04/02/2009 |
| 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 |
| 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 |
| 20090021306 | 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 feedbac... | 01/22/2009 |
| 20090009249 | Input Stage An input stage receives a differential input signal at first and second input nodes and provides a differential output current at first and second output nodes. The differential output current includes a component taken from the input nodes through first and second impe... | 01/08/2009 |
| 20080309409 | 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 stage f... | 12/18/2008 |
| 20080303700 | Amplifier circuit, digital-to-analog conversion circuit, and display device Disclosed is a digital-to-analog conversion circuit in which first and second serial DACs and an amplifier circuit for driving a data line are provided. In a first data period, the first serial DAC converts a first digital signal received in the first data period to a f... | 12/11/2008 |
| 20080290943 | 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 be a... | 11/27/2008 |
| 20080238548 | 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, an... | 10/02/2008 |
| 20080211580 | LOW NOISE AC DIFFERENTIAL AMPLIFIER WITH REDUCED LOW CORNER FREQUENCY AND CURRENT CONSUMPTION An integrated amplifier may include a transconductance stage including a differential pair of input transistors of a first type of conductivity, respective resistive loads coupled to said input transistors, and a first bias circuit coupled to the input transistors. The ... | 09/04/2008 |
| 20080211581 | 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.... | 09/04/2008 |
| 20080197928 | THRESHOLD VOLTAGE COMPENSATION FOR A TWO STAGE AMPLIFIER In an example embodiment, an apparatus, such as a two stage operational amplifier, comprising a first stage amplifier having an input and an output, and a second stage amplifier having an input and an output, the input of the second stage amplifier is coupled to the out... | 08/21/2008 |
| 20080180135 | Hysteresis circuit applied to comparator and amplifier circuit thereof A hysteresis circuit applied to a comparator and an amplifier circuit thereof are provided. A hysteresis circuit is disposed on a positive feedback path of the comparator, such that the comparator resists noise interferences, and the hysteresis circuit has a feature of ... | 07/31/2008 |
| 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 |
| 20080106336 | 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 tra... | 05/08/2008 |
| 20080094140 | Ratio-independent switched capacitor amplifiers and methods of operating ratio-independent switched capacitor amplifiers A ratio-independent switched capacitor amplifier includes a first sampling circuit configured to sample a first input voltage as a first sampling voltage and to double a level of the first sampling voltage during an interval in which the first input voltage is cut off; ... | 04/24/2008 |
| 20080031383 | Replica Linearized Power Amplifier A power amplifier includes a power amplifier core in which a transmit signal having an amplitude-modulated (AM) component and a phase-modulated (PM) component is passed and amplified, the power amplifier comprising a forward path, and an additional amplification device ... | 02/07/2008 |
| 20080001667 | Circuitry For Adaptively Generating And Using A Reference Voltage a circuit for an RFID device in one embodiment includes an operational amplifier having a first input, a second input, and an output where the first input receives an incoming signal, arid the second input is coupled to the output via a feedback loop. An operational amp... | 01/03/2008 |
| 20070273444 | Techniques for enabling a 10BT active output impedance line driver using a low power supply A line driver for generating 10 BT signals is disclosed. Digital symbols to be transmitted via a 10 BT Ethernet line are converted by a digital-to-analog converter into a corresponding analog voltage signal, which is fed into an active output impedance line driver. The ... | 11/29/2007 |
| 20070241820 | DRIVE CIRCUIT CONTAINING AMPLIFIER CIRCUIT An amplifier circuit includes an operational amplifier having first and second input nodes and one output node which is connected to a data line for which a pixel is provided; a feedback circuit having first and second elements which are connected to one of the first an... | 10/18/2007 |
| 20070229161 | 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) hav... | 10/04/2007 |
| 20070194850 | DYNAMICALLY COMPENSATED OPERATIONAL AMPLIFIER An operational amplifier is dynamically compensated depending on the internal state of the operational amplifier. Compensation is fully enabled only when the internal state indicates a risk of instability. When the internal state of the operational amplifier indicates t... | 08/23/2007 |
| 20070188232 | Wideband CMOS gain stage A CMOS gain stage includes biasing circuitry configured to insure saturation of a subsequent stage without a source follower circuit. The CMOS gain stage is optionally powered by a supply voltage that is greater than a permitted supply voltage for a processes technology... | 08/16/2007 |
| 20070120603 | 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. A f... | 05/31/2007 |