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5049835 Modified cascode circuit  
Conventional cascode circuits achieve a performance which is not optimum. To enhance performance, the cascode circuit of the present invention has an input stage FET that has a saturation current...
5047665 Low noise, low offset, high speed CMOS differential amplifier  
A dual successive approximation analog-to-digital converter, including circuitry for generating separate reference voltages for each analog-to-digital converter, is integrated onto a single...
5045808 Single-stage high-gain amplifier  
A high-gain solid-state amplifier (20) includes an amplification stage including a transistor (Q1) having a current-dependent transconductance value. The transistor is operatively connected to a...
5041797 Micro-power gain lattice  
A broadband, high-gain RF signal amplifier which consumes a minimal amount of DC power has an input terminal to which an input signal to be amplified is coupled, and an output terminal from which...
5039954 Amplifier arrangement  
The gain of a cascode amplifier arrangement comprising a first transistor (N1), a second transistor (N2), a current source (J1), an input terminal (1) and an output terminal (3) is increased by...
5032799 Multistage cascode radio frequency amplifier  
A cascode radio frequency amplifier in which a control amplifier stage is provided and any number of clone amplifier stages are connected in series (cascode) with the control amplifier. The...
5028881 Highly linear operational transconductance amplifier with low transconductance  
An operational transconductance amplifier (OTA) with improved linearity and improved dynamic range operating on a single five-volt supply. The OTA comprises a virtual ground circuit, a current...
5025226 High-gain low-noise amplifier  
A high-gain, low noise solid-state multiple stage amplifier (12) includes a phase-inverting input stage (20) and a phase non-inverting output stage (30). The input stage includes a first...
5015966 Folded cascode amplifier  
An operational amplifier comprises two amplifiers of like circuit configuration and complementary conductivity type connected in parallel. Each amplifier includes a folded cascode input section...
5010588 Ultrawide-bandwidth low-noise optical receiver  
An ultrawide-bandwidth, low-noise optical receiver is disclosed. The receiver comprises a photodiode (402) connected to a high-impedance three-stage (421, 422, 423) HEMT preamplifier through an...
5006817 Rail-to-rail CMOS operational amplifier  
A CMOS operational amplifier comprises an output gain stage including output transistors coupled between the rails so that for a given amount of current, the output transistors have rail-to-rail...
4994773 Digitally controlled monolithic active phase shifter apparatus having a cascode configuration  
A digitally controlled active phase shifter with vernier control consists of a 180 degree phase bit in series with a 90 degree bit and a digitally controlled active vector generator with vernier...
4983929 Cascode current mirror  
A cascoded current mirror device is disclosed that is capable of producing an output current that is a direct function of an input current received by that device. The cascoded current mirror...
4980651 High speed, high precision operational amplifier  
A DC-coupled multistage operational amplifier, the participation of the multiple stages of which, in defining the effective gain of the amplifier, is frequency dependent, such that high frequency...
4965468 High resolution, fully differential CMOS comparator  
A high resolution, fully differential, CMOS comparator advantageously employs a single high-gain, "folded cascode", fully differential operational amplifier and an output latch circuit and the...
4959622 Operational amplifier with precise bias current control  
An operational amplifier of the folded cascode type is disclosed and includes a differential input stage, connected with a differential to single ended output stage, a current mirror is...
4958133 CMOS complementary self-biased differential amplifier with rail-to-rail common-mode input-voltage range  
A CMOS complementary, self-biased, differential amplifier provides for a rail-to-rail common-mode input-voltage range of operation. A self-biasing scheme is used to provide negative feedback to...
4956615 Input circuit for high-frequency amplifiers  
In an input circuit for high-frequency amplifiers having four transistors of the same conductivity type, the emitters of the first and second transistors (T1, T2) are connected to a reference...
4940949 High efficiency high isolation amplifier  
A broadband RF amplifier with high efficiency and high reverse isolation having a common emitter stage connected in a cascode configuration to a common base stage, said cascode driving the common...
4939479 Audio amplifier  
An audio amplifier comprises a first current mirror having an input coupled to an output of a cascade differential pair and an output coupled to an output of a first constant current source. A...
4929986 High power diamond traveling wave amplifier  
An FET device especially useful in common gate amplifier circuits used as amplifiers of microwave and millimeter wave signals. The device has a diamond film layer constituting the device's...
4928073 DC amplifier  
A DC amplifier includes first and second transistors, an emitter resistor, and a load resistor. The first and second transistors constitute a differential amplification transistor pair. The...
4926137 Transistor amplifier for outputting a voltage which is higher than a breakdown voltage of the transistor  
A first and a second transistors coupled in series by connecting the collector of the first one to the emitter of the second one are connected at the collector of the second transistor through a...
4920321 Amplifier circuit arrangement  
An amplifier circuit wherein the output signal of an npn long-tailed transistor pair amplifier stage (1) is referenced to a first power supply point (5). In order to transfer this signal to the...
4914402 Opto-electronic transimpedance amplifier  
In an opto-electronic transimpedance amplifier for the amplification of optical signals supplied by a photovoltaic cell and having a transistor as amplifier, the load resistor of the amplifier...
4901002 Current source having a wide range of output voltages  
A current source having a wide range of output voltages. The emitter-collector path of a main transistor (T30) of the npn type, arranged to define the value of the current, is connected in series...
4891607 Low distortion drive amplifier  
The low distortion drive amplifier of the present invention uses an emitter follower circuit to drive a low impedance load such as a transmission line. A constant current source is connected to...
4890067 Common base configuration for an fT doubler amplifier  
An fT doubler amplifier having a Darlington type common base stage is provided wherein the fast current contributions from the fT doubler are passed through the slow path of the Darlington common...
4890069 Gallium arsenide power monolithic microwave integrated circuit  
A gallium arsenide monolithic microwave integrated circuit amplifier comprising a first stage having a common gate field effect transistor to provide matching of the input impedance, a second...
4857865 Self equalizing multi-stage radio frequency power amplifier  
Linearity and efficiency of a radio frequency multi-stage power amplification device 10 are increased by employing two tuned circuits 16 and 18 in the driver stage 12 and two tuned circuits 22 and...
4839609 Differential amplifier  
To provide a high-speed wide-dynamic range differential amplifier, the amplifier comprises first and second FETs having source terminals connected to each other and a constant current source...
4829266 CMOS power operational amplifier  
A CMOS power operational amplifier with large output voltage swing and high noise rejection is obtained by coupling a folded cascode type differential input stage and an output stage comprising an...
4823092 MOS transconductance amplifier for active filters  
A differential input, differential output transconductor for IC fabrication comprises a matched pair of field-effect transistors (10) whose source terminals (11) are connected together to a first...
4816772 Wide range linear automatic gain control amplifier  
An automatic gain control (AGC) amplifier, which may be fabricated as a monolithic integrated circuit, provides linear gain response in dB over a wide dynamic range. The AGC amplifier comprises...
4812780 Broadband differential amplifier  
A differential amplifier (230) with input differential dual gate FETs (232,234) with one pair of gates (235,237) tied together, with sources tied together, and with a current source (236,238) for...
4806877 Amplifier having a cascade circuit  
An amplifier having a cascade circuit which comprises a first and a second transistors connected in cascade. To suppress the signal voltage change at the common connecting node between the first...
4804926 FT quadrupler amplifier with linearity correction  
An fT quadrupler amplifier improves the frequency response beyond that which is possible with an fT doubler, yet retains precise nonlinearity correction.Voltage to current conversion is achieved...
4797631 Folded cascode amplifier with rail-to-rail common-mode range  
A folded cascode amplifier with rail-to-rail common-mode range utilizes a fully differential input with two sets of input common source amplifier devices to allow rail-to-rail common-mode range....
4779057 Cascode amplifier with nonlinearity correction and improve transient response  
An improved cascomp amplifier includes a main differential transconductance amplifier stage, a pair of diode connected sense transistors and a differential correction amplifier stage. The sense...
4777472 Modified cascode amplifier  
An input signal to an amplifier is coupled to a gate electrode of a first PMOS transistor operating as a common source inverting amplifier. The drain electrode of the first transistor is coupled...
4772859 Microwave temperature compensated cascadable amplifier for fiber optical receiver  
A temperature compensated amplifier network for a fiber optical receiver includes a photodiode having an optical input and a current output, and a cascadable transimpedance amplifier having N...
4764736 Amplifier for high frequency signal  
In an amplifier for a high frequency signal used to amplify a signal having a high frequency in a television tuner, a receiver for satellite broadcasting, and the like, at least two stages of...
4758799 Broadband, high speed video amplifier  
A broadband, high speed, signal inverting video amplifier comprises a generally conventional, main cascode amplifier and first and second current boosting cascode amplifiers means which are...
4757276 Signal-processing circuit having a field-effect MOSFET and bipolar transistors  
The signal-processing circuit of the present invention, more particularly the gain-controlled amplifier circuit, comprises a MOSFET (metal oxide semiconductor field-effect transistor), and an NPN...
4754233 Low noise ultra high frequency amplifier having automatic gain control  
A radio frequency amplifier includes a bipolar and a field effect transistors (FET) which are cascoded for efficient operation and simultaneous gain control. Bias circuitry is connected to the...
4749959 Multiple FET device having direct-coupled stages for improved microwave operation  
A field effect transistor microwave circuit device includes first and second field effect transistors having common source connections with a pair of coupled transmission lines connecting the...
4746877 Direct-coupled wideband amplifier  
An improved gain stage includes a pair of differentially-connected, matched, bipolar transistors and local positive feedback from the output to the collector electrode of one input transistor to...
4743862 JFET current mirror and voltage level shifting apparatus  
A JFET current mirror is employed in the voltage level shifting section of an operational amplifier. The JFET current mirror includes a first and second JFET coupled at their gates for conducting...
4730168 CMOS output stage with large voltage swing and with stabilization of the quiescent current  
A CMOS output stage with large voltage swing particularly suited for output buffers in monolithic analog subsystems has two, push-pull connected, complementary MOS transistors and has feedback for...
4728902 Stabilized cascode amplifier  
A bipolar integrated circuit amplifier with a cascode stage has an emitter follower biasing circuit which provides a bias voltage to the cascode stage. The cascode amplifier stage is stabilized by...