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| Number | Title | Issue Date |
| 7816971 | Switch circuit having adjustable linearity of differential mode resistances A switch circuit includes a pair of metal oxide semiconductor (MOS) switches and an adjusting unit. Each of the MOS switches has an input terminal and an output terminal. The MOS switches receive a pair of differential input voltages at the input terminals thereof, ... | 10/19/2010 |
| 7782117 | Constant switch Vgs circuit for minimizing rflatness and improving audio performance A MOSFET switch is disclosed that is driven on by a circuit that provides a constant gate to source voltage, Vgs, that is independent of the input voltage, the power supply and any logic signals. The constant Vgs is derived from a reference voltage and biases the MO... | 08/24/2010 |
| 7782116 | Power supply insensitive voltage level translator A circuit is described that when the power supply to circuits that control a pass transistor is at zero volts, the pass transistor configured as a voltage level translator remains off regardless of the voltages and changes in voltages at the ports connected to the p... | 08/24/2010 |
| 7768337 | IGBT-driver circuit for desaturated turn-off with high desaturation level A driver circuit comprising an insulated gate bipolar transistor having a collector coupled to a voltage supply, an emitter coupled to a source of reference potential, and a gate configured to receive a control signal from a driver circuit, and a desaturation circui... | 08/03/2010 |
| 7746152 | Switch circuit device, and wireless circuit device and sampling circuit device employing the same A switch circuit device with improved insertion loss characteristics and isolation characteristics is provided. The switch circuit of the present invention includes a plurality of n-ch MOSFETs whose gates are connected together and whose drains and sources are conne... | 06/29/2010 |
| 7466185 | IGBT-Driver circuit for desaturated turn-off with high desaturation level A driver circuit comprising an insulated gate bipolar transistor having a collector coupled to a voltage supply, an emitter coupled to a source of reference potential, and a gate configured to receive a control signal from a driver circuit, and a desaturation circui... | 12/16/2008 |
| 7414454 | Voltage switching circuit A voltage switching circuit is provided which is constructed from a minimum number of transistors and prevents the threshold voltage margin from being lowered by causing high-voltage cutoff and supply voltage transfer functions heretofore performed by a single deple... | 08/19/2008 |
| 7304526 | Switching circuit for handling signal voltages greater than the supply voltage Analog bidirectional switches (20) comprising a first (1) and a second (2) transistor function badly in case of the signal voltage at an input or an output of the switch (20) exceeding the supply voltage used for operating the switch (... | 12/04/2007 |
| 7280411 | Output buffer circuit and semiconductor memory using the same An output buffer circuit of the present invention includes a plurality of unit circuits in each of which a pull-up transistor controlled by a first input signal is connected between a high-potential power supply and common node, and a pull-down transistor controlled... | 10/09/2007 |
| 7274242 | Pass transistors with minimized capacitive loading A tracking switch includes an MOS switching transistor with a control terminal coupled to a CMOS inverter. The relative geometries of the transistors that make up the inverter are significantly imbalanced, resulting is substantially different drive strengths (i.e., ... | 09/25/2007 |
| 7268613 | Transistor switch with integral body connection to prevent latchup A circuit device having a transistor-based switch topology that substantially eliminates the possibility of latchup of the device. A series-connected low voltage threshold (LVT) N-channel transistor and a pull-up resistor are coupled across a switching (P-channel) t... | 09/11/2007 |
| 7265601 | Adaptive gate drive voltage circuit A circuit and method for reducing losses in a DC/DC converter by optimizing gate drive voltage. The circuit and method detect a change in the output load, or more specifically the output current, and adjust the gate voltage accordingly; in other words, providing ada... | 09/04/2007 |
| 7263336 | Device, system and method to provide different bias voltages and common tuning voltage In some embodiments of the present invention, multiple voltage controlled capacitor branches may be employed in a tuning circuit. Each of the multiple voltage controlled capacitors branches may be set to somewhat apart resonance frequency so that a composite resonan... | 08/28/2007 |
| 7253059 | Method of forming an integrated circuit with multi-length power transistor segments A monolithic power integrated circuit fabricated on a semiconductor die includes a control circuit and a first output high voltage field-effect transistor (HVFET) having source and drain segments substantially equal to a first length. A second output HVFET has sourc... | 08/07/2007 |
| 7250804 | Series/shunt switch and method of control A switch includes at least two signal ports in series with a series FET connected therebetween, and a shunt path having an FET, whereby an input bias is applied to a gate on the series FET and to a drain on the shunt FET. In one embodiment, the switch includes a con... | 07/31/2007 |
| 7250857 | Multiplexer method and system for intrinsically safe applications and a multiplexer switch for use therein A multiplexing system is provided for a plurality of sensors disposed in a tank containing a potentially explosive environment and excited from a common excitation circuit outside of the tank through a corresponding plurality of signal lines that penetrate the tank.... | 07/31/2007 |
| 7236212 | System and method for providing a low power receiver design An integrated receiver with channel selection and image rejection substantially implemented on a single CMOS integrated circuit is described. A receiver front end provides programable attenuation and a programable gain low noise amplifier. Frequency conversion circu... | 06/26/2007 |
| 7220629 | Method of manufacturing an integrated circuit with multilength power transistor elements A monolithic integrated circuit fabricated on a semiconductor die includes a control circuit and a first output transistor having segments substantially equal to a first length. A second output transistor has segments substantially equal to a second length. The firs... | 05/22/2007 |
| 7218132 | System and method for accurate negative bias temperature instability characterization Methods and systems are provided for characterizing the negative temperature bias instability of a transistor. A bias voltage is maintained at a drain terminal of the transistor during a test period. A stress voltage is maintained at a gate terminal of the transisto... | 05/15/2007 |
| 7212023 | System and method for accurate negative bias temperature instability characterization Methods and systems are provided for characterizing the negative temperature bias instability of a transistor. A bias voltage is maintained at a drain terminal of the transistor during a test period. A stress voltage is maintained at a gate terminal of the transisto... | 05/01/2007 |
| 7205807 | Cascode signal driver with low harmonic content A method and apparatus for minimizing harmonic content in a digital signal driver circuit are disclosed. A digital input signal applied to an input node generates a corresponding digital output in a circuit with two or more MOS devices in cascode connection with eac... | 04/17/2007 |
| 7205830 | Analog MOS circuits having reduced voltage stress Circuits and methods are provided for reducing the voltage stress applied to the drain to source conduction path of an FET and/or to reduce the stress to the gate oxide of an FET which may have a thin gate oxide. Thus, in a current mirror circuit disclosed herein, a... | 04/17/2007 |
| 7202728 | Signal transmission circuit The signal transmission circuit comprises a first switch controls output according to a first control pulse, the first source follower outputting signals to the first output line based on signal input into the gate, a first capacitor connected between the gate and t... | 04/10/2007 |
| 7199664 | Integrated switchless programmable attenuator and low noise amplifier An integrated receiver with channel selection and image rejection substantially implemented on a single CMOS integrated circuit is described. A receiver front end provides programable attenuation and a programable gain low noise amplifier. Frequency conversion circu... | 04/03/2007 |
| 7176745 | Semiconductor device The well voltage of a CMOS circuit having low-threshold-voltage MOSFETs is controlled when the power supply is turned on, during normal operation, and when the supply voltage is cut off. The CMOS circuit can thus operate stably with lower power consumption, because ... | 02/13/2007 |
| 7170109 | Heterojunction semiconductor device with element isolation structure A technique enabling to improve element isolation characteristic of a semiconductor device is provided. An element isolation structure is provided in a semiconductor substrate in which a silicon layer, a compound semiconductor layer and a semiconductor layer are lam... | 01/30/2007 |
| 7154301 | Apparatus and method for a low jitter predriver for differential output drivers A method and apparatus for a low jitter predriver for differential output drivers. In one embodiment, the predriver comprises a pull-up circuit having at least one pull-up device of a first device type and a pull-down circuit having at least one pull-down device of ... | 12/26/2006 |
| 7145378 | Configurable switch with selectable level shifting A configurable bus switch is described where the bus switches are grouped into combinations as determined by logic inputs. NMOS transistors are the bus switches of choice, and programmable logic inputs select and enable groupings of these switches. Switch enable sig... | 12/05/2006 |
| 7138846 | Field effect transistor switch circuit A field effect transistor switch circuit may include: (1) first, second, and third switch terminals; (2) a first field effect transistor, a pair of the main electrodes of which are connected respectively to the first switch terminal and the second swit... | 11/21/2006 |
| 7135748 | Integrated circuit with multi-length output transistor segment A monolithic integrated circuit fabricated on a semiconductor die includes a control circuit and a first output transistor having segments substantially equal to a first length. A second output transistor has segments substantially equal to a second length. The firs... | 11/14/2006 |
| 7132875 | Voltage switching circuit A voltage switching circuit is disclosed which is constructed from a minimum number of transistors and prevents the threshold voltage margin from being lowered by causing high-voltage cutoff and supply voltage transfer functions heretofore performed by a single depl... | 11/07/2006 |
| 7132877 | Radiation tolerant solid-state relay The present invention provides a radiation-tolerant-solid-state-relay without radiation-hardened parts. A p-channel MOSFET provides power-switching functionality. In further detail, the solid-state-relay comprises a bias section, a control section, and a power-switc... | 11/07/2006 |
| 7129766 | CMOS analog switch A CMOS analog switch is provided that can handle negative input polarity. The semiconductor substrate wherein the analog switch is formed has a substrate area of n-conductivity type. First and second p-channel transistors are formed in the n-conductivity substrate a... | 10/31/2006 |
| 7123939 | Communication station with automatic cable loss compensation A wireless communications systems employing code-division multiple access information transmission techniques includes a transmission facility having ground-based transmission and reception electronic equipment, a remotely located RF power amplifier, an antenna, and... | 10/17/2006 |
| 7123899 | Broadband single-ended input upconverter An upconverter for mixing a single-ended RF signal with a differential local oscillator signal to generate a differential IF signal, that includes a source degenerated first differential pair comprising matched first and second transistors, each having source, gate ... | 10/17/2006 |
| 7123054 | Semiconductor integrated circuit device having an ESD protection unit A semiconductor integrated circuit device includes a semiconductor integrated circuit formed in a semiconductor chip, and a switching element that is formed in the semiconductor chip and has a current path whose one end and the other end are both connected to the se... | 10/17/2006 |
| 7116151 | Stress tolerant high voltage back-to-back switch Methods and apparatuses associated with stepping down a high voltage in a high voltage switch. An additional transistor may be coupled to a switching transistor, and the additional transistor biased to a voltage level in between the high voltage to be switched and a... | 10/03/2006 |
| 7113412 | Drive circuit and power supply apparatus In charging a gate of a NMOS transistor Q1, the charging speed is adjustable by varying a resistor R1. When an inputted pulse signal VIN reverses to a negative voltage, a diode D2 turns off. Then, current flows along a discharging loop formed by... | 09/26/2006 |
| 7110718 | Phase distortion using MOS nonlinear capacitance RF phase distortion circuits and methods for controllably phase distorting an RF signal based on amplitude of the RF signal. An MOS device is provided having a body of a first conductivity type and at least one region of a second conductivity type in the body, with ... | 09/19/2006 |
| 7095258 | Circuit arrangement for the provision of an output signal with adjustable flank pitch Circuitry is disclosed for controlling the slope of rising and falling edges of a signal. The circuitry includes a ramp signal generator that receives an input signal and that generates a trapezoidal signal based on the input signal, and a circuit array that receive... | 08/22/2006 |
