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9019018 Integrated circuit with an internal RC-oscillator and method for calibrating an RC-oscillator  
An integrated circuit (10) has an internal RC-oscillator (20) for providing an internal clock signal (CLI) having an adjustable oscillator frequency. The integrated circuit (10) further comprises...
9019026 Circuit and method for generating oscillating signals  
An oscillator module includes a first MOS transistor and a capacitor. The capacitor is coupled between a gate and source of the first MOS transistor. The drain of the first MOS transistor receives...
9007137 Oscillation circuit and operating current control method thereof  
An oscillation circuit includes a condenser, a charging/discharging part configured to switch between charging and discharging of the condenser according to a control signal, a comparator...
9007138 Oscillator with startup circuitry  
An oscillator that includes a first source current leg and first sink current leg to source current and sink current, respectively, during a startup mode of oscillator operation. The oscillator...
8994428 Period signal generation circuits  
A period signal generation circuit including a control voltage generator and a period controller. The control voltage generator selecting one of temperature-dependent voltages to output the...
8988157 Oscillation circuit and semiconductor integrated circuit including the same  
An oscillation circuit includes an RS flip-flop for generating output signals based on a set signal and a reset signal, an electric-charge charge/discharge unit which has first and second...
8981858 Spread spectrum oscillator  
An apparatus includes a selection device to select a spreading profile from a plurality of spreading profiles, and an oscillation device to generate clock signals having different frequencies over...
8970313 Area efficient single capacitor CMOS relaxation oscillator  
Methods and circuits for CMOS relaxation oscillators are disclosed. A single capacitive element, a single current source and a switching network are utilized. A switching network of the oscillator...
8928420 Low current single chip oscillator timing circuit  
A low current single chip oscillator timing circuit which includes a dual mode capacitor circuit having a larger capacitance mode and a smaller capacitance mode having a fixed ratio. The timing...
8928421 Control circuit for reducing electromagnetic interference  
A control circuit for reducing electromagnetic interference is provided. The control circuit includes a periodic signal generator and a modulation controller. The periodic signal generator adjusts...
8922289 Oscillation circuit  
An oscillation circuit including a reference voltage generation circuit that adds a proportional-to-absolute-temperature (PTAT) output, which increases in proportion to an absolute temperature, to...
8922290 Pulse width modulator with two-way integrator  
An example PWM includes a driver and a two-way oscillator. The oscillator includes, a first frequency adjust current source, a second frequency adjust current source, a capacitor, a switching...
8912855 Relaxation oscillator  
A relaxation oscillator is provided. A first current source provides a first current. A second current source provides a second current. A resistive element is coupled between the first current...
8907732 Oscillation frequency regulating circuit and method  
There is provided an oscillation frequency regulating circuit including: a measuring section that performs measurement based on an oscillation frequency of an oscillation circuit; a comparator...
8902008 Resistor capacitor (RC) oscillator  
Aspects of the disclosure provide a circuit. The circuit includes a current generator, a capacitor, a comparator, a switch and a clock generator logic. The current generator is configured to...
8890629 Oscillator circuit with comparator  
An oscillator circuit with a comparator is provided, wherein the comparator has a supply input. A supply circuit supplies the comparator with a first current during a first section of an...
8890630 Oscillator apparatus and method with wide adjustable frequency range  
An oscillator formed from low cost discrete semiconductors and passive devices creates a linear periodic ramp of constant frequency with ramp slope based on an external voltage signal. Parameters...
8884707 Two-delay voltage-controlled-oscillator with wide tuning range  
An oscillator is disclosed that can generate an oscillation signal using a latch and two delay elements. For some embodiments, the oscillator includes an SR latch, a first delay element, and a...
8878621 Temperature-compensated semiconductor resistor device  
A semiconductor device includes: a resistance R whose resistance value varies in response to a substrate temperature variation; a resistance corrector that is coupled in series with the resistance...
8872593 On-chip R and C calibration using on-board supply bypass capacitance  
A technique for calibration of on-chip resistance (R) and capacitance (C) values using an on-board bypass capacitor may include configuring an on-chip switch to selectively couple an on-chip...
8860517 Oscillator circut and electronic circuit comprising the oscillator circuit  
An oscillator circuit including a first capacitor provided with a first terminal; a resistor provided with a reference terminal; a first current generator provided with a connection terminal; a...
8860518 Current-feedback operational-amplifier based relaxation oscillator  
A current-feedback operational-amplifier Based Relaxation oscillator provides oscillation based on a current feedback operation amplifier and two external resistors which exhibit a low output...
8830006 Oscillator circuit for generating clock signal  
An oscillator circuit includes a charge current source and first and second muxes. The first mux has a common node, a discharge node, a control node and a charge node coupled to the charge current...
8816788 Frequency generator with frequency jitter  
A frequency generator with frequency jitter is disclosed. The frequency generator comprises a capacitor, a comparing unit, a charging and discharging unit, a delay unit, and a charging and...
8803619 Relaxation oscillator with self-biased comparator  
A relaxation oscillator for generating an output clock signal includes an RC circuit, a self-biased comparator stage, and a logic circuit. The RC circuit generates first and second comparator...
8786375 Runtime compensated oscillator  
Disclosed is a method for generating an oscillating signal and an oscillator circuit.
8773210 Relaxation oscillator  
A relaxation oscillator for generating an output clock signal includes a RC circuit, a bias generation stage, first and second comparator stages, and a logic circuit. The RC circuit generates...
8742858 Relaxation oscillator having a supply voltage independent output frequency  
Techniques and architectures corresponding to relaxation oscillators having output frequencies that are supply voltage independent are described. In a particular embodiment, an apparatus includes...
8729969 Oscillation circuit and oscillation system  
An oscillation circuit includes a threshold voltage extraction module, a positive temperature coefficient voltage generation module, an addition module, a common-source amplifier module, a charge...
8717110 Frequency-jittering apparatuses, frequency-jittering methods and power management devices  
A frequency-jittering apparatuses includes an oscillator and a frequency control circuit. The oscillator generates a signal. When the magnitude of the signal exceeds a magnitude of a reference...
8692625 Precision oscillator with temperature compensation  
An oscillator includes a first capacitor electrically connected to a first charging switch and a first discharging switch, a second capacitor electrically connected to a second charging switch and...
8692623 Relaxation oscillator circuit including two clock generator subcircuits having same configuration operating alternately  
A control circuit controls first and second clock generator subcircuits so that one subcircuit of the first and second clock generator subcircuits operates for a comparison voltage generating...
8686801 Power supply and DC-DC-conversion  
In an embodiment of a converter, a first oscillator provides switching signals for switching between charging and discharging of a capacitor, and a second oscillator is configured to add an offset...
8669820 Oscillator circuit  
An oscillator circuit includes a clock oscillator which outputs a main clock signal having an oscillating frequency switched between a high frequency and a low frequency in response to a frequency...
8665029 Oscillator module and reference circuit thereof  
A reference circuit for an oscillator module is provided. The reference circuit includes a reference voltage generation unit and a reference current generation unit. The reference voltage...
8659362 Relaxation oscillator circuit with reduced sensitivity of oscillation frequency to comparator delay variation  
A relaxation oscillator circuit with reduced sensitivity of oscillation frequency to comparator delay variation includes a first current source that generates charging current, a second current...
8643443 Comparator and relaxation oscillator employing same  
A relaxation oscillator has a comparator that includes first through third bias current transistors coupled to a first supply rail. First and second input transistors form a pair of parallel...
8643442 Oscillator circuit  
An oscillator circuit includes a signal generator having a compensation frequency output node that provides a compensation frequency signal at the compensation frequency output node. A pulse...
8618887 Configurable spread spectrum oscillator  
A spread spectrum oscillator includes a high frequency oscillator circuit configured to oscillate at a first frequency, and a low frequency oscillator circuit configured to oscillate at a second...
8610509 Flexible low current oscillator for multiphase operations  
A method for generating an oscillator signal uses a multiphase oscillator having a plurality of input stages and a reference stage. Each input stage produces an input stage voltage that represents...
8542073 Variable-capacitance device  
A variable-capacitance device includes a first capacitance element coupled between a first power supply terminal and an output terminal, a capacitance selection switch that is turned on and off in...
8542071 Chaotic oscillator-based random number generation  
Chaotic oscillator-based random number generation is described. In an example, a circuit includes a negative differential resistance (NDR) device to receive an alternating current (AC) bias. The...
8531248 VDD-independent oscillator insensitive to process variation  
An oscillator includes a positive power supply node for providing a positive power supply voltage; a capacitor; and a constant current source providing a first constant current and coupled to the...
8531249 Oscillator for generating output signal with adjustable frequency  
An oscillator is provided and includes a resistance unit, a capacitance unit, a first inverter and a second inverter. The resistance unit is serially connected between a first reference point and...
8508306 Relaxation oscillator  
A relaxation oscillator and a method for offset cancellation in a relaxation oscillator. The relaxation oscillator comprises two comparator units, each comparator unit comprising a comparator...
8508307 Oscillation circuit  
An oscillation circuit including a reference voltage generation circuit that adds a proportional-to-absolute-temperature (PTAT) output, which increases in proportion to an absolute temperature, to...
8456343 Switched capacitor type D/A converter  
A switched capacitor type D/A converter receives m-bit (m represents an integer) input data, and outputs an analog signal that corresponds to the input data value. Switch circuits are provided to...
8390384 Precision on-board tuning of embedded microcontroller oscillator using charge time measurement unit  
Precision measurement of a period(s) of an embedded clock oscillator using a charge time measurement unit (CTMU) maintains a desired frequency accuracy of the embedded clock oscillator over a...
8368475 Oscillator circuit  
A first capacitor is arranged such that the electric potential at a first terminal is fixed. A first discharging circuit discharges the first capacitor at a timing that corresponds to a cyclic...
8350631 Relaxation oscillator with low power consumption  
A relaxation oscillator for generating oscillator signal includes a ramp voltage generating circuit, a reference voltage generating circuit, a reference voltage switching circuit, and a digital...