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Match Document Document Title
6326855 Voltage-to-current converter circuit with independent and adjustable compensation for process, voltage, and temperature  
A voltage-to current (V-to-I) converter circuit for use in combination with a current-controlled oscillator (ICO) to form a voltage-controlled oscillator (VCO), wherein the V-to-I converter circuit...
6323737 System and method for generating a multi-phase signal with a ring oscillator  
An oscillator is provided that includes a plurality of bridges and a plurality of transmission lines. Each bridge includes a plurality of negative differential resistance devices. Each transmission...
6323738 Voltage-controlled ring oscillator with level converting and amplitude control circuits  
A voltage-controlled oscillator comprises a level converting circuit, an amplitude controller, a voltage-controlled oscillation section having differential delay cells connected in a ring form, and...
6317007 Delayed start oscillator circuit  
A delayed start oscillator includes an oscillator enable signal having first and second states thereof for selectively enabling and disabling the oscillator respectively. An oscillator output...
6310928 PLL circuit  
A PLL circuit comprises a storage/control circuit for storing, in an associated manner, a plurality of PLL output frequencies to be designated, lock ranges including the PLL output frequencies in...
6310523 Wide-range and low-power consumption voltage-controlled oscillator  
A wide-range and low power consumption voltage-controlled oscillator according to the invention includes a logic control circuit, a parallel series controllable inverter bank and a voltage control...
6304150 Double-clamped delay stage and voltage controlled oscillator  
A delay cell, a method for generating a delay, and a differential ring oscillator are disclosed. The delay cell provides a stable delay with a low voltage power supply, and has a high power supply...
6304149 Ring oscillator VCO using a differential delay stage  
The present invention relates to a ring oscillator VCO using a differential delay stage, substantially increasing the oscillation frequency. The differential delay stage utilizes a differential...
6304148 Oscillator circuit for a semiconductor memory having a temperature dependent cycle  
An oscilator circuit for a integrated circuit memory device to optimize the refresh operating circuit and suppress wasteful power consumption in which the oscillator frequency is set high during...
6300839 Frequency controlled system for positive voltage regulation  
In a charge pump system, the frequency of an oscillator is based on the output signals from a plurality of differential amplifiers. Each differential amplifier receives a different reference...
6297706 Single stage voltage controlled ring oscillator  
A single stage voltage controlled ring oscillator includes a trans-admittance voltage-to-current circuit coupled to a trans-impedance voltage-to-current circuit. The output of the trans-impedance...
6294962 Circuit(s), architecture and method(s) for operating and/or tuning a ring oscillator  
A current source and a load circuit. The oscillator circuit may be configured to present an output signal having a frequency in response to (i) a current, (ii) a load, and (iii) an input signal....
6294963 Voltage-controlled oscillator  
A voltage-controlled oscillator comprising a voltage compensation transistor is disclosed. The voltage compensation transistor is able to provide an equivalent resistance to the bias voltage...
6288616 Multifrequency low-power oscillator for telecommunication IC's  
An oscillator circuit is provided with delay cells having supply voltage terminals and being interconnected in a ring for providing a first oscillator signal. If the delay cells have supply voltage...
6285214 Output buffer stage for use with a current controlled oscillator  
A buffer stage for buffering an input signal generated by a current controlled oscillator comprising: an input terminal that receives the input signal, an output terminal that outputs a buffered...
6285262 Frequency divider, a phase lock oscillator and a flip-flop circuit using the frequency divider  
A frequency divider comprises first and second basic gates. Each basic gate includes first and second differential circuits, an adder unit for adding outputs from the first and second differential...
6285263 Linearization method and apparatus for voltage controlled oscillator  
A voltage controlled oscillator (VCO) having a generally linear transfer characteristic across a wide frequency range of operation. The VCO is comprised of a voltage-to-current converter (V-I) and...
6281759 Digital frequency generation method and apparatus  
A method and a circuit are described for generating a frequency signal having fine frequency control, and which are suitable for implementation on an-integrated circuit. The output frequency is...
6281760 On-chip temperature sensor and oscillator for reduced self-refresh current for dynamic random access memory  
A temperature dependent clock circuit (100) is disclosed. The clock circuit (100) includes a reference circuit (102) that provides a first group of reference signals (108) with positive temperature...
6278334 Voltage controlled oscillator with accelerating and decelerating circuits  
A voltage controlled oscillator is provided in the form of two ring oscillators 30 and 32. Each oscillator stage 14 includes an invertor 16, a level change accelerating circuit 18 and a level...
6278331 System and method for compensating wafer parameters  
The present invention relates to a system and method for compensating IC parameters. According to an embodiment of the present invention, a die of an IC wafer is coupled with a compensation circuit...
6275117 Circuit and method for controlling an output of a ring oscillator  
A circuit and method configured to generate a variable impedance. The circuit may comprise a voltage controlled resistor configured to generate the variable impedance in response to (i) a first...
6271732 Ring oscillator insensitive to supply voltage variations  
A ring oscillator consisting of a plurality of series connected amplifier stages alternatingly energized by first and second voltages negatively correlated to each other. The output of the final...
6271730 Voltage-controlled oscillator including current control element  
An odd number of inverter circuits are connected with each other so as to form a ring. A first current-control element is provided between an oscillation signal line which is used for connecting...
6262616 Open loop supply independent digital/logic delay circuit  
A technique for compensating for supply voltage variations in a delay circuit by utilizing a bias circuit to maintain the delay substantially constant with respect to the supply voltage. The bias...
6259330 Ring oscillator having variable coarse and fine delays  
A ring oscillator includes a coarse delay control block including a plurality of coarse delay gates, and a fine delay control block including a plurality of fine delay gates. The total delay of the...
6259326 Clock recovery from a burst-mode digital signal each packet of which may have one of several predefined frequencies  
The clock may be recovered rapidly for burst mode signals that are at one of a set of different a priority known frequencies by using a single device that is similar to that of U.S. Pat. No....
6259327 PLL having circuits for selecting optimum VCO input/output characteristics  
A phase locked loop circuit includes an input comparator (2) capable of generating a deviation signal which can be used for driving an oscillator (5) so as to generate an output signal (CLKOUT)...
6252467 Voltage controlled oscillator including a plurality of differential amplifiers  
A differential VCO includes a ring oscillator with a plurality of differential buffers connected in a ring, a bias circuit including a replica circuit of the differential buffers, and a...
6252465 Data phase locked loop circuit  
A phase comparator circuit reducing the effects of offset and jitter, and a data Phase Locked Loop circuit incorporating the phase comparator circuit. The phase comparator circuit includes a Delay...
6246737 Apparatus for measuring intervals between signal edges  
An apparatus for measuring a time interval between a start signal edge and a stop signal edge provides a stable clock signal as input to a delay line formed by a series of similar logic gates. The...
6246294 Supply noise immunity low-jitter voltage-controlled oscillator design  
A phase-locked loop system that generates an output signal having low jitter includes a phase frequency detector, a charge pump, a low jitter voltage-controlled oscillator, a system low-pass...
6243784 Method and apparatus for providing precise circuit delays  
A precise timing delay method and apparatus. A phase-locked loop (PLL) in combination with a timing reference is used to calibrate a precise delay. These delays are then duplicated throughout the...
6239661 Transmitter and an oscillator network for use in the transmitter  
A transmitter having an integratable quadrature oscillator network for simultaneously producing a sine wave and a cosine wave. The digital direction of rotation (whether the frequency is positive...
6232844 Controlled orthogonal current oscillator with ranging  
An adjustable frequency oscillator with a wide tuning range which can be voltage or current controlled. A maximum tuning per feedback current is obtained by phase shifting a feedback signal by...
6232845 Circuit for measuring signal delays in synchronous memory elements  
A circuit measures a signal propagation delay through a series of memory elements. In one embodiment the memory elements are configured in series so that together they form a delay circuit. In...
6229403 Voltage-controlled oscillator  
A voltage-controlled oscillator is provided which has input and output characteristics that do not depend upon fluctuations or variations in the power supply voltage, operating temperature, and...
6222423 Voltage controlled ring oscillator delay  
A delay cell for use within a voltage controlled oscillator capable of operating at two different selectable frequencies, the delay cell having a first delay stage including a first differential...
6215368 Voltage controlled oscillating device  
Voltage controlling/oscillating device comprises a terminal for setting the delay rate in the delay unit and the delay interpolator. Clock signal whose phase is inverted by the inverting gate is...
RE37124 Ring oscillator using current mirror inverter stages  
A ring oscillator having an odd number of single ended stages, each stage including two transistors connected as a current mirror. The stage provides for low-voltage performance and improved...
6211744 Ring oscillator having an externally adjustable variable frequency  
The present invention relates to a ring oscillator having a variable frequency allowing its use in a variety of application circuits. The ring oscillator produces an oscillating pulse signal having...
6208211 Low jitter phase locked loop having a sigma delta modulator and a method thereof  
A phase locked loop PLL has a current controlled oscillator ICO, having an input resistance Rin. Rin is proportional to a control current Idac sent to ICO. ICO is coupled to a capacitor, the...
6208212 Delay cell with controlled output amplitude  
A delay cell comprises a fast delay stage including a differential amplifier for connection to a differential input. A slow delay stage includes a differential amplifier connected in parallel with...
6204694 Programmable clock signal generation circuits and methods for generating accurate, high frequency, clock signals  
A circuit and method is described which generates a high frequency clock signal whose frequency is accurate enough to be used for testing other circuitry, yet the circuit can be described using a...
6198356 Voltage controlled oscillator power supply and temperature compensation circuit  
Circuits such as Phase Lock Loops which use VCO's are affected by temperature and power supply variations which effect the performance of the circuit, particularly at high frequencies and low...
6194971 Method and apparatus for phase shifting a controlled oscillator and applications thereof  
A method and apparatus for providing very small changes in the output oscillation of a controlled oscillation circuit, which may be used in a phase locked loop circuit, is accomplished by a...
6191658 High speed coupled oscillator topology  
An oscillator circuit having a topology that provides for high-speed oscillation in an even number of phases. The topology generally comprises an even number of inverting circuit elements generally...
6191630 Delay circuit and oscillator circuit using same  
Disclosed is a delay circuit for delaying at least the timing of a rising edge or the timing of a falling edge of an input signal alternating between first and second levels. The delay circuit...
6188293 Low power oscillation circuit and non-volatile semiconductor memory having ring oscillator  
An low-power consumption integrated ring oscillator capable of stable operation throughout a wide voltage range without undergoing a large frequency change includes a first constant voltage...
6188285 Phase-locked loop circuit and voltage-controlled oscillator capable of producing oscillations in a plurality of frequency ranges  
In a PLL circuit including a plurality of VCOs, first and second switches are respectively connected between the gate and source and the gate and drain of a P channel MOS transistor included in a...
Matches 451 - 500 out of 1023 < 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 >