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7312658 |
Differential amplifier with two outputs and a single input of improved linearity
A differential amplifier having a first and second output terminals and receiving an input signal at an input terminal. The amplifier comprises a first amplifier having a first input connected to...
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7312598 |
Capacitor free low drop out regulator
A low drop out (LDO) regulator that includes a novel error amplifier, which is arranged with a first stage that employs both NMOS and PMOS devices that are similarly doped in differential pairs and...
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7310017 |
Operational amplifier circuit
To provide a differential operational amplifier circuit that attains a wide-band and high-DC-gain characteristic and operates with a low power supply voltage. A signal path having three amplifier...
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7301401 |
Low noise op amp
An analog circuit for processing analog signals in an integrated circuit comprising a number of metal oxide semiconductor transistor devices. The circuit includes a first transistor device having a...
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7301398 |
High linearity differential transconductance amplifier
The present invention is a differential transconductance amplifier circuit that includes matched cross-coupled transconductance elements connected such that the differential gain of the amplifier...
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7301403 |
Low noise amplifier with switch gain control
This invention presents a low noise amplifier with switching gain control, comprising an amplifier having an impedance matching circuit a switch circuit, a signal amplifying branch circuit, a...
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7295068 |
Increasing the linearity of a transconductance cell
A transconductance cell is disclosed that includes a first transistor and a second transistor. A regulator regulates an average voltage in response to a reference voltage, where the average voltage...
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7292099 |
Amplifier arrangement and method for operation of an amplifier arrangement
An amplifier arrangement is provided having a first differential amplifier stage and a second differential amplifier stage, which are connected to one another with negative feedback. The second...
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7292102 |
Gain control scheme independent of process, voltage and temperature
An apparatus and method to use a shunt network across source terminals of cascode transistors that drive a differential current to control gain. When the gates of the cascode transistors and...
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7292101 |
Digitally adjustable variable gain amplifier (VGA) using switchable differential pairs
A variable gain amplifier including a stage. The stage having a set of switchable differential pairs. The stage providing a gain range to a signal and adjusting a gain of the signal. At least one...
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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...
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7285992 |
Amplifier with charge-pump generated local supplies
An amplifier system includes a follower-type output stage that is driven by a pre-driver circuit. The follower-type output stage that is operated from VCC and GND (or VEE) power supplies. The...
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7286013 |
Coupled-inductance differential amplifier
A differential amplifier that employs mutually coupled inductors to provide desired levels of inductance in a substantially smaller form factor in comparison to individual inductor components....
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7282993 |
Frequency characteristics-variable amplifying circuit and semiconductor integrated circuit device
From power supply potential wiring to ground potential wiring, a first inductor, a first resistance, a first output terminal, and a first transistor are series-connected in this order, and in...
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7282990 |
Operational amplifier for output buffer and signal processing circuit using the same
An operational amplifier includes: a differential amplifier for differentially amplifying first and second differential input signals to generate first and second output signals through first and...
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7279974 |
Fully differential large swing variable gain amplifier
The fully differential large swing variable gain amplifier circuit includes: a first 5-transistor transconductor having a common mode node; and a second 5-transistor transconductor having a common...
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7279975 |
Differential circuit with offset control
There are four differential pairs, where each has first and second legs. The first pair is to receive a first data signal at its first leg, and a second data signal at its second leg. The second...
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7279984 |
Method for differential-mode processing of an incident voltage relative to a reference voltage and corresponding device
A device for differential-mode processing of an incident voltage relative to a reference voltage includes a differential circuit including a voltage/current conversion block having a differential...
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7276970 |
System and method for linearizing a CMOS differential pair
An integrated receiver with channel selection and image rejection substantially implemented on a single CMOS integrated circuit. A receiver front end provides programable attenuation and a...
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7276966 |
Radio frequency envelope apparatus and method
Improved radio frequency (RF) envelope tracking apparatus for use in wireless and wired systems. In one exemplary embodiment, a transmitter upconversion stage receives input digital I and Q values,...
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7271651 |
High performance differential amplifiers with thick oxide devices for high impedance nodes
A circuit is described which uses a thick gate oxide device in the input stage and a thin gate oxide device in a second stage that is connected to the input stage. The input stage thick gate oxide...
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7271652 |
Differential amplifier and operational amplifier
In a differential amplifier and an operational amplifier each for amplifying a signal, a differential signal composed of first and second signals is inputted to a couple of input terminals ( 1, 2...
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7268622 |
Analog preamplifier calibration
A combined analog and digital calibration circuit and method for adjusting an output offset voltage of a differential amplifier circuit are provided. The circuit comprises a digitally controlled...
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7268623 |
Low voltage differential signal driver circuit and method for controlling the same
Provided are a low voltage differential signal driver circuit and a method for controlling the same. The differential signal driver circuit includes: a differential amplification signal generator...
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7268624 |
Differential amplifier offset voltage minimization independently from common mode voltage adjustment
Offset voltages in differential amplifiers are minimized by controlling compensation currents through the load impedances of the amplifiers. The currents are varied while sensing the polarity of...
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7269144 |
Radio transceiver on a chip
An entire radio transceiver can be completely integrated into one IC chip. In order to integrate the IF filters on the chip, a heterodyne architecture with a low IF is used. A single, directly...
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7265622 |
Differential difference amplifier
A differential difference amplifier includes a first pair of differential input terminals and a second pair of differential input terminals. The differential difference amplifier has a pair of...
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7265620 |
Wide-band high-gain limiting amplifier with parallel resistor-transistor source loads
An amplifier has a wide bandwidth and a high gain by using parallel loads. Each load has a load resistor and a load p-channel transistor in parallel. The drain voltages of differential n-channel...
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7265621 |
Fully differential operational amplifier with fast settling time
An operational amplifier includes a pair of differential input transistors, a pair of cascode transistors and a keep-alive circuit. The pair of differential input transistors is connected together...
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7259625 |
High Q monolithic inductors for use in differential circuits
The present invention provides a differentially driven monolithic inductor circuit having a shield differentially driven by phase shift buffers and a single-ended monolithic inductor circuit having...
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7256651 |
System and method for providing a constant swing high-gain complementary differential limiting amplifier
A system and a method are disclosed for providing a constant swing high-gain complementary differential limiting amplifier. High gain for the differential amplifier is created by providing a...
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7256652 |
Differential input receiver having over-voltage protection
A differential receiver circuit. In one embodiment, the circuit includes first and second input transistors, each having a first terminal coupled to a bias node (a first and second bias node,...
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7248104 |
Operational amplifier
An operational amplifier includes a current provider that introduces an additional current Ic to an internal node A of the operational amplifier for reducing the output offset voltage of the...
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7248116 |
Differential amplifiers
Differential amplifiers comprise a differential input stage, first, second, third, and fourth fixed current sources, a first resistive element, and a current-folding element. Due to topology...
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7248115 |
Differential amplifier operable in wide range
Differential amplifier includes a differential amplifier circuit, a bias circuit and an output circuit. The differential amplifier circuit includes first and second differential amplifier sections....
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7245181 |
Linear amplifier
A linear amplifier circuit comprising a first differential amplifier (DA 1 ) having a differential input terminals (I+, I−) for receiving a binary input signal, and a differential output...
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7245187 |
Multi-standard amplifier
The present invention relates generally to amplifiers, and more specifically to multi-band and/or multi-standard low noise amplifiers. There are currently no inexpensive, highperformance,...
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7236011 |
High-speed differential logic buffer
A circuit for a high speed digital buffer has an active load circuit connected to an output of the digital buffer. The active load circuit loads the buffer output with an active inductance to...
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7233204 |
Method of acquiring low distortion and high linear characteristic in triode-typed transconductor
Provided is a method of acquiring a high linear characteristic and a low distortion in a transconductor (operational transconductance amplifier), especially, in a triode region type transconductor...
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7233202 |
Amplifier with increased bandwidth and method thereof
An amplifier with increased bandwidth by current injection and a method thereof. The amplifier includes an input stage for receiving a first input signal, a load stage coupled to the input stage...
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7233201 |
Single-ended pseudo-differential output driver
A differential pair of transistors includes a first transistor and a second transistor having their sources coupled together. Their sources are further coupled to ground via a pull-down network. A...
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7230489 |
System and apparatus for receiver equalization
In some embodiments an apparatus includes an amplifier, a first inverter having an input coupled to an output of the amplifier, and a second inverter having an input coupled to an output of the...
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7230487 |
Amplifying device and converter thereof
A converter for an amplifying device having a first amplifier and a second amplifier is provided. The first amplifier and the second amplifier have a first tail current and a second tail current...
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7227420 |
Transimpedance amplifier with a high gain/bandwidth product for conversion of a DAC output current
The two output currents (INP, IN) which are produced by a current source digital/analog converter (DAC) are supplied to the two halves of a symmetrical transimpedance amplifier. The input current...
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7227406 |
Differential amplifier for balanced/unbalanced converter
A first field effect transistor receives an unbalanced signal from an input terminal at the gate thereof, and outputs a balanced signal from the drain thereof. A second field effect transistor has...
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7227411 |
Apparatus for a differential self-biasing CMOS amplifier
Aspects of the invention provide a self-biasing differential amplifier. The self-biasing differential amplifier may include a first input stage and a biasing transistor pair coupled to the first...
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7227413 |
Audio amplification device with antipop circuitry
An audio amplification device includes an input for receiving an input audio signal and an output for delivering an output audio signal and an amplifier (OA 1 ) comprising a differential pair of...
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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...
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7224226 |
Amplifying device
An amplifying device comprising a first terminal to which an alternating signal is inputted; a second terminal connected via an external first resistor to a power supply line; a third terminal to...
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7224225 |
Differential inductor based low noise amplifier
An embodiment of the present invention is a low noise amplifier using differential inductors. An input matching circuit having first and second differential inductors matches an input resistance at...
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