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7612603 |
Switching frequency control of switched capacitor circuit using output voltage droop
A frequency control circuit including a controlled oscillator and an amplifier circuit is disclosed for providing a clock signal to a switched capacitor circuit which divides an input voltage to...
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7605633 |
Level shift circuit which improved the blake down voltage
A gate and the other end of the current path of first and second transistors are cross-connected. A third transistor is inserted to the other end of the current path of the first transistor, and a...
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7580288 |
Multi-level voltage adjustment
An adjustable voltage supply ( 310 ) may have a plurality of levels of adjustment, such as a coarse select circuit ( 471 ) and a fine select circuit ( 473 ), to generate an adjustable voltage (e.g....
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7561809 |
Modulated laser with integral pre-distortion circuit
An integrated laser device includes a pre-distortion circuit. The pre-distortion circuit receives an electrical modulation signal and generates a pre-distorted modulation signal. A laser is...
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7554378 |
Fast DC coupled level translator
A level translator has an inverter comprising a first transistor having a first predetermined voltage threshold and a second transistor having a second predetermined voltage threshold. The two...
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7538612 |
Control circuit for diode based RF circuits
A control circuit for diode based RF circuit ( 6 ) comprising at least one analog communicating device ( 2, 3 ) having a plurality of digital control lines (A 0 , A 1 , A 2 , En 1 , B 0 , B 1 , B 2...
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7489179 |
Electronic high-frequency switch and attenuator with said high-frequency switches
In an electronic high-frequency switch, comprising a field-effect transistor as the switching element, the size of the gate voltage may be switched between at least two values (−5.5 V and −8...
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7453305 |
Voltage level shifting circuit, a differential input stage circuit, and a method for providing a level shifted differential signal to a differential input buffer circuit
A voltage level shifting circuit ( 5 ) for shifting the common mode voltage of a differential signal to be within the working range of a differential input buffer circuit ( 3 ) comprises a first...
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7382166 |
Signal amplification device
A signal amplification device which uses inexpensive standard CMOS and yet is capable of high-accuracy threshold setting. An offset voltage generator detects the direct-current level of an input...
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7376358 |
Location specific optical monitoring
An optical spike is generated at an arbitrarily selected location within an arbitrary optical link. The optical spike is generated by deriving a spike signal having a plurality of components, and...
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7375574 |
Semiconductor device
A semiconductor device includes a differential level converter circuit that receives a first signal and outputs a second signal of greater amplitude. The differential level converter has a first...
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7352229 |
Reference clock receiver compliant with LVPECL, LVDS and PCI-Express supporting both AC coupling and DC coupling
A reference clock receiver structure according to the invention is provided. The structure preferably includes an input buffer that is formed from a PMOS differentiated pair of transistors and a...
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7323924 |
Level shifter circuit
A low-power consumption level shifter circuit is provided by preventing a through current which is generated when a level of a signal is changed. In order to prevent a through current which flows...
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7262650 |
Amplitude adjusting circuit
An amplitude adjusting circuit comprises a first current mirror where a variable current of a variable current source is copied into each of 1st-3rd transistors; a second current mirror where the...
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7245895 |
Attenuator with switch function and mobile telephone terminal device using the same
A high frequency part, which amplifies a high frequency signal outputted from an intermediate frequency part and supplies to an antenna, is equipped with a gain controller with switch function. The...
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7245170 |
Attenuator and portable telephone terminal apparatus using the same
Provided are: at least one or more series variable resistors implemented by field effect transistors connected to a signal line A; and at least one or more shunt variable resistors implemented by...
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7190220 |
Circuit for providing a base operating voltage for a bipolar transistor and amplifier circuit
A circuit for providing a base operating voltage for a bipolar transistor includes a U BE multiplier providing, in response to a working-point control current, a working voltage fed to a circuit...
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7180310 |
Amplitude varying driver circuit and test apparatus
There is provided an amplitude varying driver circuit operable to output an output signal, which is an amplified input signal being supplied. The amplitude varying driver circuit includes: a...
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7167045 |
System and method for modifying output power of an information communication system
A system for communicating information includes a variable gain amplifier (VGA) responsive to an input signal and a gain control signal for controlling a gain of the VGA. The system also includes a...
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7161405 |
Level shift circuit
A level shift circuit includes first and second inverters and an inversion circuit. The first inverter has a first input terminal and a first output terminal for generating the output signal. The...
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7135921 |
Differential circuit, amplifier circuit, driver circuit and display device using those circuits
A differential circuit and an amplifier circuit for reducing an amplitude difference deviation, performing a full-range drive, and consuming less power are disclosed. The circuit includes a first...
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7116160 |
Booster
A booster includes a boosting circuit and a feedback control circuit. The boosting circuit is used to boost an input voltage into a predetermined output voltage; the feedback control circuit...
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7102410 |
High voltage level converter using low voltage devices
A circuit for converting an input signal at a first voltage level to an output signal at a second voltage level uses only thin oxide transistors. The circuit includes a first unit operating at a...
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7049729 |
Amplifier converting charge signal
A positive charge of a sensor element is charged in a signal converting circuit, is converted into a positive voltage, and is outputted. When the polarity of the charge of the sensor element is...
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6963242 |
Predistorter for phase modulated signals with low peak to average ratios
An amplifier system containing a polynomial predistorer and a polynominal predistorter configured for use with an RF power amplifier, the polynomial predistorter having a polynomial generator...
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6927630 |
RF power detector
A method and apparatus is provided for detecting the output power of an RF power amplifier for purposes of controlling the output power. A circuit for generating an output power control signal...
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6917233 |
Limiting amplifier and method for amplifying an input signal
Disclosed is a limiting amplifier for amplifying an input signal including at least first portions having a first amplitude and second portions having a second amplitude being lower than said first...
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6888393 |
Amplitude limiting apparatus and multi-carrier signal generating apparatus
A peak level of amplitude of transmission signals in a multi-carrier communication system or the like is to be effectively suppressed. A transmission data generating unit generates digital...
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6867637 |
Semiconductor integrated circuit device including a substrate bias controller and a current limiting circuit
In a semiconductor integrated circuit device, for realizing high speed, as well as superior product yield rate and usability, while reducing circuit scale and improving on product yield rate and...
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6867633 |
Complementary electronic system for lowering electric power consumption
An electronic system with semiconductor components allows electronic circuits with conventional semiconductor components to be used, having minimal supply voltages to guarantee stable operation,...
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6856926 |
Frequency margin testing of bladed servers
A frequency margin testing blade is adapted for use in a bladed server. The testing blade is further adapted to provide one or more output clock signals for use as clock inputs to one or more...
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6720816 |
Integratable circuit configuration for potential-free signal transmission
A circuit configuration for potential-free signal transmission has a transformer with a primary winding and a secondary winding. A drive circuit is connected upstream of the primary winding and a...
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6717458 |
Method and apparatus for a DC-DC charge pump voltage converter-regulator circuit
An apparatus and method for a DC-DC charge pump voltage converter-regulator circuit includes a control circuit, a multiplier circuit, and a feedback circuit. The feedback circuit includes a load...
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6700426 |
Programmable voltage pump having a ground option
Programmable voltage pump for producing an output voltage includes a trim input configured to set the output voltage, an output configured to emit the output voltage therefrom, and an...
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6667669 |
Differential pin diode attenuator
A differential PIN diode attenuator ( 450 ) that selectively attenuates a differential analog input signal. The two parts of the differential signal are applied to separate input lines ( 452, 454 )...
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6597233 |
Differential SCSI driver rise time and amplitude control circuit
An SCSI circuit which allows for the independent control of driver slew rate and amplitude with a linear shaped driver output voltage. The circuit comprises 1) a symmetrical H-Driver having at...
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6570430 |
Non-linear distortion generator for both second and third order distortion
An in-line distortion generator for coupling in-line with a non-linear device (NLD) produces an output signal of useful amplitude, but with low composite second order, composite triple beat and...
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6552592 |
Differential input circuit for digital signal processing system
The invention relates to an evaluation device ( 4 ) connected to the output of an A/D converter ( 3 ) for comparing the direct component of a digitally converted input signal having a threshold...
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6552591 |
Method and apparatus for processing a wide dynamic range signal
Method and apparatus are provided for processing a wide dynamic range analog signal which comprises a compressive nonlinear transfer function responsive to the average amplitude of the signal...
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6518814 |
High-voltage capacitor voltage divider circuit having a high-voltage silicon-on-insulation (SOI) capacitor
A high-voltage capacitive voltage divider circuit includes a high-voltage Silicon-On-Insulator (SOI) capacitor connected between a high-voltage terminal and a low-voltage terminal, and a...
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6509778 |
BIST circuit for variable impedance system
Disclosed is a programmable impedance driver that includes two sets of impedance devices, two primary counters and two test counters. The primary counters selectively activate individual ones of...
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6496341 |
SOI electrostatic discharge protection circuit
A silicon-on-insulator (SOI) electrostatic discharge (ESD) protection circuit. The SOI ESD protection circuit has a first and a second diode, a first and a second NMOS transistor and a first and a...
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6472948 |
High-power precision 1 dB step attenuator
A step attenuator for use in attenuating an electromagnetic signal. The step attenuator includes a first path having a plurality of attenuator structures provided therein, each attenuator structure...
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6459554 |
Drive circuit for the trip actuator of a network protector and a network protector incorporating the same
A network protector includes a coil drive circuit for the trip actuator which operates as a current limiter to protect a trip coil with limited impedance at the upper limit of network voltage while...
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6445239 |
Bus coupling with amplitude-controlled transmission circuit
A bus coupling includes an amplitude-controlled transmission circuit for generating a substantially rectangular active pulse for a transmission pulse including an active pulse and an equalizer...
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6441671 |
Digital trim capacitor programming
A programming method ( 250 ) for digitally programming the adjustment of an electronic trim capacitor ( 212, 314, 414 ). In an initial step ( 252 ), programming is initiated by setting an enable...
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6424200 |
Termination impedance trimming circuit
A termination impedance in a semiconductor circuit is trimmed to fall within a desired range by a trimming circuit such that the amount of variation in the termination impedance is less than the...
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6411244 |
Phase startable clock device for a digitizing instrument having deterministic phase error correction
A phase stable clock circuit includes a phase gate having track-and-hold (T/H) circuits with each T/H circuit receiving a phase shifted continuous sinusoidal signal of predetermined phase and a...
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6396327 |
Method and apparatus for reducing distortion produced by a nonlinear device
A predistortion circuit ( 102 ) includes a signal splitter ( 114 ), a diode network ( 118 ) and a signal combiner ( 116 ). The signal splitter ( 114 ) is splits an input signal into two portions....
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6377106 |
Circuit and method of maximum voltage bias control
A maximum voltage bias control circuit ( 22 ) is provided which accepts two supply voltages (V batt and V out ) and determines the maximum voltage. The maximum voltage is then applied to terminal...
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