Matches 651 - 700 out of 1022 < 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 >
Match Document Document Title
5767748 Voltage controlled oscillator and voltage controlled delay circuit  
A voltage controlled oscillator is capable of rectilinearly changing an oscillation frequency over a wide range while keeping, to a fixed value, a signal amplitude of a ring oscillator using an...
5764110 Voltage controlled ring oscillator stabilized against supply voltage fluctuations  
A circuit for suppressing period jitter of the clock output of a ring oscillator caused by supply voltage fluctuations. The ring oscillator includes n identical current controlled delay circuits...
5764111 Voltage controlled ring oscillator frequency multiplier  
A voltage controlled ring oscillator (10) integrated with a phase locked loop (101) using CMOS technology. The ring oscillator (10) provides a frequency multiplied harmonic output frequency (42) at...
5760657 Method and apparatus employing a process dependent impedance that compensates for manufacturing variations in a voltage controlled oscillator  
A voltage controlled oscillator (VCO) having a current source and a process dependent (or process controlled) impedance is disclosed. The voltage controlled oscillator includes a current mirror...
5757242 Low power consumption oscillators with output level shifters  
A low power consumption oscillator circuit is provided with an oscillator. The oscillator responds to a voltage by producing an oscillating signal at its output having an amplitude that depends on...
5757238 Fast locking variable frequency phase-locked loop  
According to the preferred embodiment of the present invention, a phase-locked loop is provided that overcomes the limitations of the prior art by facilitating fast locking on transition to a...
5757240 Low gain voltage-controlled oscillator  
A voltage controlled-oscillator ring oscillator having an adjustable high-frequency reference and an adjustable low-frequency reference. A mixer and a plurality of delay elements comprise a delay...
5754081 Clock signal generation and test circuitry  
The present invention provides a semiconductor device wherein the oscillation of a clock signal oscillation circuit is halted by control carried out by a CPU when a clock-signal switching circuit...
5751196 Circuit arrangement for compensating frequency deviations of a voltage-controlled oscillator, using a second oscillator  
The oscillation frequency of a non-externally voltage-controlled oscillator produces a control signal for the monolithic integrated voltage-controlled oscillator. This control signal is opposed to...
5745106 Apparatus and method for automatic measurement of ring oscillator frequency  
A ring oscillator is embedded into the same silicon wafer as the functional circuits. The output of the ring oscillator and a display clock signal are both directed into seperate inputs of a...
5739725 Digitally controlled oscillator circuit  
A variable frequency oscillator circuit includes a ring oscillator circuit, a plurality of adjustment means for adjusting an output frequency of the ring oscillator circuit, at least one of the...
5739726 High-speed voltage controlled oscillator having a level shifter for providing rail-to-rail output  
A voltage controlled oscillator circuit with a high power supply rejection ratio incorporates a clamping transistor with respect to each output terminal which limits the signal swing of the output...
5731743 Frequency synthesizer having phase error feedback for waveform selection  
A frequency synthesizer including a fixed frequency oscillator providing a plurality of waveforms having a first frequency, each waveform being delayed in time with respect to another of the...
5731727 Voltage control type delay circuit and internal clock generation circuit using the same  
A control transistor is connected in parallel with an input transistor of a bias generation circuit in a voltage control delay circuit. A power supply potential Vcc is divided by voltage divider...
5717362 Array oscillator circuit  
An array oscillator circuit is disclosed herein. The array oscillator circuit includes a plurality of ring oscillators, each ring oscillator having a plurality of buffer stages for generating...
5714912 VCO supply voltage regulator  
A voltage-controlled oscillator includes at least one voltage-controlled delay element and a reference voltage generator. The voltage-controlled delay element has first and second voltage supply...
5714911 Quadrature oscillator having amplitude control means based on a trigonometric identity  
A quadrature oscillator includes an amplitude control circuit that is based upon the trigonometric identity sin 2 ωt+cos 2 ωt=1. The amplitude control circuit, referred to as a Pythagorator,...
5712601 Oscillation circuit  
An oscillation circuit is provided which is easily adjusted with a high degree of accuracy. The oscillation circuit including a filter having a time constant and an inverting amplifier which feeds...
5710527 Complementary voltage to current conversion for voltage controlled oscillator  
A voltage controlled oscillator has a linear voltage to current characteristic from ground to the supply voltage. This oscillator includes a voltage to current converter which employs two output...
5708396 Voltage controlled oscillator of a ring oscillator type that includes an odd number of delay units  
Disclosed is a voltage-controlled oscillator which has delay units 11A which have variable resistance circuits 111 and are connected in the form of a ring, and control signal lines 5, 6 for...
5705947 Clock generator  
A system for converting between parallel data and serial data is described. In the system (10), individual bits of the parallel data (12) are latched into individual registers (117). Each register...
5703541 Ring oscillator with two inverters per unit inverter circuit  
A ring oscillator shortens the delay time between consecutive delayed clock signals, and increases of the number of delayed clock signals, without changing the oscillation frequency f of the ring...
5694090 Voltage and temperature compensated oscillator frequency stabilizer  
An integrated circuit comprises a ring oscillator with a frequency stabilizing circuit. The frequency stabilizing circuit produces compensated voltage signals in response to changes in supply...
5694086 Precision, analog CMOS one-shot and phase locked loop including the same  
A precision CMOS one-shot having a delay proportional to a bias voltage. The bias voltage is generated by a phase locked loop which produces a bias voltage to control a voltage controlled...
5691661 Pulse generating circuit and a semiconductor memory device provided with the same  
A pulse signal generating circuit includes a ring oscillator and an internal voltage generating circuit. The internal voltage generating circuit generates an internal voltage depending on an...
5691669 Dual adjust current controlled phase locked loop  
A dual adjust current-controlled phase locked loop is provided for allowing multiple-gain frequency acquisition of a signal. The dual adjust current-controlled phase locked loop includes a phase...
5689213 Post-fabrication programmable integrated circuit ring oscillator  
A ring oscillator composed of a plurality of series connected inverters, the number of which may be varied after fabrication of the ring oscillator by selectively programming selections between the...
5686867 Regulated supply for voltage controlled oscillator  
A monolithic CMOS phase-lock loop (PLL) circuit provides a high frequency of operation suitable for RF applications. The PLL produces an output clock with high spectral purity and very low jitter....
5682123 Voltage controlled ring oscillator having level translator in output  
A voltage controlled oscillator comprised of a current controlled oscillator formed of a loop of serially connected inverters, the oscillator having a primary output at an output of one of the...
5677649 Frequency-variable oscillator controlled high efficiency charge pump  
An integrated circuit semiconductor device includes a charge pump to provide current at a potential which is greater than a supply potential. The charge pump utilizes an oscillator, which causes...
5677650 Ring oscillator having a substantially sinusoidal signal  
A ring oscillator comprising an odd number of inverters connected in a ring, and apparatus for driving the ring oscillator so that it oscillates at a frequency slightly less than its maximum...
5675293 Voltage controlled ring oscillator  
A voltage controlled ring oscillator having a reduced voltage controlled oscillator (VCO) gain by controlling only the fall time of the period of the VCO using integrated circuits and logic...
5673005 Time standard circuit with delay line oscillator  
This is an integrated timing circuit which can be formed on a microprocessor chip. The circuit uses an oscillator having a delay line and a variable delay element. The delay line and the delay...
5673008 Voltage-controlled oscillator and PLL circuit exhibiting high-frequency band operation, linear frequency characteristics, and power-source variation immunity  
A voltage-controlled oscillator comprises a plurality of delay circuits connected in a ring configuration. Each of the delay circuits comprises a current source and a differential pair of inverting...
5668505 Ring oscillator having two rings whose outputs are combined  
An oscillator is provided having a plurality of cascade coupled inverters Each one of the inverters is a differential amplifier having a p-input and an n-input. The output of each one of the...
5668507 Noise generator for evaluating mixed signal integrated circuits  
A method and apparatus for generating noise to be used in evaluation and testing of digital or analog integrated circuits. One or more noise generators fabricated on a substrate generate noise...
5668504 Frequency synthesizer  
A frequency synthesizer including a phase-locked loop, an oscillator of which supplies n phases with increasing delays of a fast clock signal synchronized on a reference frequency, each of said n...
5666088 Wide frequency range VCO with low jitter  
Each starved-inverter of a voltage controlled ring oscillator has an output transfer gate associated therewith. The pair of complementary switches composing a transfer gate being controlled in...
5652549 Integrated circuit ring oscillator having line driver with double line feedback  
A monolithically integrated oscillator is implemented as ring oscillator with a line driver and a double line formed on one and the same chip. A running time of the double line is selected...
5648766 Circuit with supply voltage optimizer  
An electronic device (100) includes a regulator (102) for generating an operating voltage. The device (100) also includes at least one component (110) using the operating voltage and requiring a...
5646968 Dynamic phase selector phase locked loop circuit  
A dynamic phase selector phase locked loop circuit includes: an A/D converter for receiving an input to be sampled; a phase detection circuit for determining the phase error between the input...
5638028 Circuit for generating a low power CPU clock signal  
A circuit for generating a low power CPU clock signal is disclosed. The circuit includes a multi-frequency oscillator having a plurality of output signals of various frequencies that are input to a...
5638030 High frequency differential VCO with common biased clipper  
A VCO includes a ring oscillator formed by connecting a plurality of voltage controlled inverting delay cells together, a biasing circuit for providing a bias voltage to each of the voltage...
5635878 Differential-type voltage-controlled oscillator with low-frequency stability compensation  
A differential-type voltage-controlled oscillator (VCO) with low-frequency stability compensation is disclosed. The differential-type VCO comprises a voltage-to-current converter for converting an...
5635879 Voltage controlled oscillator formed of two differential transconductors  
A monolithic CMOS phase-lock loop (PLL) circuit provides a high frequency of operation suitable for RF applications. The PLL produces an output clock with high spectral purity and very low jitter....
5635877 Low voltage high frequency ring oscillator for controling phase-shifted outputs  
A oscillator having two synchronized oscillator rings is described. Synchronization is accomplished by circuitry connected between the outputs of two aligned stages in coupled oscillator rings, the...
5629651 Phase lock loop having a reduced synchronization transfer period  
A phase lock loop has a lock detection circuit, a phase comparator, a charge pump circuit, a low-pass filter, a variable delay circuit and a frequency divider. The lock detection circuit generates...
5621360 Voltage supply isolation buffer  
A CMOS delay cell with feedback circuitry to ensure that the delay cell is operating in saturation mode. A voltage controlled oscillator (VCO) comprising a loop of an odd number of delay cells,...
5619170 PLL timing generator with voltage controlled oscillator  
A phase lock loop timing generator including a voltage controlled oscillator as a current-limited ring oscillator composed of multistage inverters connected in series in a ring form using a phase...
5617454 Transmission system  
The invention relates to a transmission system comprising a phase-locked loop (12) which includes a phase comparator (15) for comparing an oscillator signal with a reference signal and for...
Matches 651 - 700 out of 1022 < 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 >