converter (Total 114553 Patents Found)

A multi-bit sigma-delta analog-to-digital converter (ADC) (40) includes a sigma-delta modulator (41) with a multi-bit quantizer (46) and a digital-to-analog converter (DAC) (47). An output of the DAC (47) provides an error signal of the modulator (41). The quantizer (46) provides a quantized signal having multiple bits...
The disclosed invention is a unique apparatus for converting signal formats. For example, the apparatus can convert from a single-ended to a differential format without the necessity of additional control circuitry. A cross-circuit arrangement prevents an undesired reversal of direction for conversion of signal formats...
The invention pertains to a method and corrector (IC 6 ) for correcting an error in a parallel analog-to-digital conversion. Such a correctable error is caused by uncertainties in the reading of the states of parallel comparing elements (IC 1, IC 2, IC 3, IC 4 ) in the converter, said uncertainties being brought abo...
An analog-to-digital converter is comprised of an analog delta-sigma modulator (10) and a digital processing section (14). The digital processing section (14) is comprised of a plurality of digital processing sections fabricated on a monolithic device. A high precision FIR filter (20) is provided for providing a high r...
A frequency converter device comprises a first converter 5 in a pulse-width modulation system for converting an AC voltage into a DC voltage; a second converter 2 in a pulse-width modulation system for supplying an AC voltage with a variable voltage and a variable frequency to a motor; a capacitor 15 connected between ...
A switch control ( 12 ) circuit which optimizes the efficiency of a buck or boost converter by eliminating simultaneous conductive states of the main power transistor ( 16 ) and the synchronous rectifying transistor ( 18 ). Power dissipation of the synchronous rectifying transistor ( 18 ) is minimized by reducing the a...
The switching power supply has high output power, high efficiency and fixed or variable output voltage. The input voltage may be AC or DC. Preferably, the input current is sinusoidal. Reduced peak currents of switches result in best possible line and component utilizations at any time. In one embodiment, a first ...
A current cell matrix type of digital-to-analog (D/A) converter to prevent deterioration of a.c. characteristics on a current path for digital-to-analog conversion includes a array of current source cells arranged in a matrix configuration. Each current source cell includes a current source transistor to generate the c...
What is provided is a direct-current converter which improves unstableness of operations owing to an error of a bottom detection circuit and fluctuations of a detection point which are caused by disturbance. The direct-current converter includes a bottom detection circuit 13 which detects a minimum voltage of a main ...
A delta-sigma modulator includes a chopper-stabilized integrator, a quantizer having an input coupled to an output of the integrator, an input signal acquiring circuit controlled by a switched reference feedback circuit and having an output coupled to the input of the integrator, and a frequency-shaped pseudo-random ch...
A method for controlling a static converter connected to a direct-current source. The converter has power conductor switches that can be deactivated and is configured to supply a distribution network with three-phase voltage. The currents flowing through the respective power semiconductor switches are measured, current...
A randomized thermometer-coding digital-to-analog converter (DAC) for the reduction of harmonic distortion due to non-ideal circuit mismatch is presented. The present invention introduces a new dynamic element matching technique that contains three properties of randomization, consecutive selection and less element swi...
A method of calibrating an input of a digital-to-analog (D/A) converter based on an output of an analog-to-digital (A/D) converter in an analog encoding apparatus including the D/A converter and the A/D converter, the method including inputting a certain range of input values to the D/A converter while the output of th...
A method for converting analog data to digital data is disclosed. The method includes operating an analog-to-digital data converter in a tracking mode to sample an input signal and in a convert mode to convert the sampled input signal after sampling to a digital signal. The analog-to-digital data converter is controlle...
Capacitor calibration in SAR converter. A method for calibrating a switched capacitor array in a SAR data converter is disclosed, which array includes a plurality of primary capacitors having a common node plate interfaced to a common node and a switched plate interfaced to a switch that is operable to be switched betw...
A circuit capable of keeping input impedance constant is provided. Further, a circuit which can contribute to improvement in power feeding efficiency in power feeding by a magnetic resonance method is provided. A voltage (a former voltage) proportional to a direct-current voltage input to a DC-DC converter from the out...
A delta-sigma Analog-to-Digital Converter (ADC) (IC) which includes an input feed-forward path extending from an input to the ADC to a feed-forward summing circuit disposed between a loop filter and quantizer of the ADC, and a filter disposed in the feed-forward path as an apparatus for improving distortion performance...
A quantum dot-containing wavelength converter includes a matrix layer and quantum dots dispersed in the matrix layer. Each of the quantum clots includes a core of a compound M1A1, an inner shell, and a multi-pod-structured outer shell of a compound M1A2 or M2A2. Each of M1 and M2 is a metal selected from Zn, Sn, Pb, Cd...
Various pipeline ADCs are disclosed that substantially compensate for interference or distortion that results from imperfections with various ADC modules of the pipeline ADCs. The pipeline ADCs include various ADC stages and various compensation stages that are coupled to the various ADC stages. The various ADC stages ...
Method and apparatus for extending a zero voltage switching (ZVS) range during power conversion. In one embodiment, the apparatus comprises a DC/DC converter, operated in a quasi-resonant mode, comprising a transformer; a primary switch, coupled to a primary winding of the transformer, for controlling current flow thro...
A multi-level converter includes a plurality of alternating current (AC) terminals connected to an AC source or load, at least three direct current (DC) terminals connected to a multi-level DC source or load, and a plurality of solid-state switches that are selectively turned On and Off to connect each of the plurality...
Time-to-digital converters adapted to analog and digital inputs and methods of use are described. A time-to-digital converter has an event frame latches and logic module with memory cells, an analog front-end module connected to the memory cells, and a bin increment generator module connected to the memory cells. The b...