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US20130154860 USE OF LOGIC CIRCUIT EMBEDDED INTO COMPARATOR FOR FOREGROUND OFFSET CANCELLATION  
A system and method are described herein that provide for the calibration of the offset of a comparator on a per-comparator basis. An injection is made to the comparator at determined injection...
US20110248874 TIME STAMP GENERATION  
A circuit and method for providing a digital output indicative of the time at which an event occurred is disclosed. In one aspect, the circuit includes a fine timing circuit configured to...
US20120050079 SYSTEM, METHOD, AND CIRCUITRY FOR BLIND TIMING MISMATCH ESTIMATION OF INTERLEAVED ANALOG-TO-DIGITAL CONVERTERS  
A timing skew estimation system is disclosed that includes a plurality of interleaved analog-to-digital converter circuits (ADCs), a timing mismatch estimation unit, and a correction unit. The...
US20110260898 MISMATCH COMPENSATORS AND METHODS FOR MISMATCH COMPENSATION  
In a compensator for compensating mismatches, and in methods for such compensation, the compensator compensates for mismatches in output signals of a system with mismatches during normal operation...
US20120119930 Background Calibration Method For Fixed Gain Amplifiers  
A method for calibrating a fixed gain amplifier configured as a front-end amplification stage of an analog-to-digital converter including sampling a calibration voltage with normal and inversed...
US20110080309 BANDWIDTH MISMATCH ESTIMATION FOR TIME INTERLEAVED ADCS  
With high speed, high resolution time-interleaved (TI) analog-to-digital converters (ADCs), bandwidth mismatches between the various ADC branches can pose a significant problem. Previously,...
US20100309034 PIPELINE ADC  
Pipeline analog-to-digital converters (ADCs) are used in many applications, but because of the configuration, components may be idled, which wastes power. Here, an ADC is provided that enables one...
US20120161991 Offset Cancellation For Analog To Digital Converters  
An offset cancellation circuit for canceling an offset voltage in an amplifier is provided herein. The offset cancellation circuit includes a current source configured to provide an offset...
US20120032825 METHOD FOR CORRECTING AMPLITUDE AND PHASE OFFSETS IN A SIGMA-DELTA MODULATOR AND SIGMA-DELTA MODULATOR IMPLEMENTING SAID METHOD  
In a method for correcting amplitude and phase offsets in a sigma-delta modulator having a loop including an integrator with a filter and an amplifier, an analog-to-digital converter, a...
US20140062739 BUFFER OFFSET MODULATION  
One or more techniques for buffer offset modulation or buffer offset cancelling are provided herein. In an embodiment, an output for a sigma-delta analog digital converter (ADC) is provided using...
US20130063289 CORRECTING FOR NON-LINEARITIES IN A CONTINUOUS-TIME SIGMA-DELTA MODULATOR  
In higher order sigma-delta modulators (SDMs), there are oftentimes errors introduced by the digital-to-analog (DAC) switches. Namely, parasitic capacitances associated with switches can introduce...
US20090273341 SYSTEM INCLUDING SIGNAL OFFSET ESTIMATION  
A system includes a first circuit configured to convert a first analog signal to a first digital signal. The system includes a second circuit configured to determine an area of the first digital...
US20120056766 NON-LINEARITY CORRECTION THAT IS INDEPENDENT OF INPUT COMMON MODE, TEMPERATURE VARIATION, AND PROCESS VARIATION  
In pipeline analog-to-digital converters (ADCs) the third harmonic can degrade the performance of the ADC, and conventional circuits that attempt to cancel this third harmonic are oftentimes...
US20120050080 LINEARITY CORRECTION CIRCUIT FOR VOLTAGE MODE DAC  
A force/sense voltage-mode DAC coupled with multiple transconductance amplifiers that generate a correction current injected to a node in one of the DAC cells is discussed. The correction current...
US20120274490 MULTIPLIER-FREE ALGORITHMS FOR SAMPLE-TIME AND GAIN MISMATCH ERROR ESTIMATION IN A TWO-CHANNEL TIME-INTERLEAVED ANALOG-TO-DIGITAL CONVERTER  
Techniques for the estimation of sample-time and gain mismatch errors in a two-channel time interleaved analog to digital converter that are devoid of any multiplication operation. In a...
US20150263751 AD CONVERSION CIRCUIT  
According to one embodiment, an AD conversion circuit of a pipeline type or successive-approximation type which compares an input voltage and a reference voltage to perform AD conversion is...
US20110115659 OFFSET COMPENSATION SCHEME USING A DAC  
An offset compensation scheme using a digital-to-analog converter (DAC) is disclosed. In some embodiments, a DAC is coupled to a circuit having an undesired current or voltage offset and is...
US20120319879 METHOD FOR MODIFYING THE LMS ALGORITHM TO REDUCE THE EFFECT OF CORRELATED PERTURBATIONS  
A process allows for the modification of the least-means-square (LMS) algorithm to remove perturbations associated with measured signals in an analog-to-digital converter (ADC). The process...
US20090244328 IMAGE PICKUP DEVICE AND SIGNAL PROCESSING METHOD THEREOF  
An image pickup device is provided, capable of complete correction with data of once analog-to-digital conversion, and prevention of excess use of switches and analog devices and/or erroneous...
US20110063146 MULTISTAGE CHOPPER STABILIZED DELTA-SIGMA ADC WITH REDUCED OFFSET  
A relatively low frequency chopping operation is applied to a delta-sigma ADC to reduce DC offsets resulting from non-ideal component operation. Sequential chopping takes place outside a closed...
US20110227767 COMPENSATING FOR HARMONIC DISTORTION IN AN INSTRUMENT CHANNEL  
Automatic test equipment (ATE) includes circuitry configured to pass a signal in a channel of the ATE, and memory configured to store a first and second correction values. A first correction value...
US20100060495 ANALOG DIGITAL CONVERT APPARATUS, ANALOG DIGITAL CONVERT METHOD, CONTROL APPARATUS AND PROGRAM  
Provided is an AD converting apparatus that converts an analog input signal into a digital output signal, comprising a plurality of AD converters supplied with sampling clocks differing from each...
US20100073206 ANALOG-TO-DIGITAL CONVERSION CIRCUITS AND METHOD FOR CALIBRATING THEREOF  
An analog-to-digital conversion circuit is provided and includes an input unit, at least one analog-to-digital converter, and a processing unit. The input unit receives an analog input signal and...
US20150256192 DIGITAL-TO-ANALOG CONVERTER WITH CORRECTION FOR PARASITIC ROUTING RESISTANCE  
An embodiment of a digital-to-analog converter circuit includes a resistor network connected to an output node, a switch network having a first plurality of switches connecting the resistor...
US20090058697 METHOD AND SYSTEM FOR MINIMIZING THE ACCUMULATED OFFSET ERROR FOR AN ANALOG TO DIGITAL CONVERTER  
A method and system utilized with an analog to digital converter is disclosed. The method and system comprise providing a first conversion on an input signal. In the first conversion, an offset...
US20110193732 BANDWIDTH MISMATCH ESTIMATION IN TIME-INTERLEAVED ANALOG-TO-DIGITAL CONVERTERS  
With high speed, high resolution time-interleaved (TI) analog-to-digital converters (ADCs), bandwidth mismatches between the various ADC branches can pose a significant problem. Previously,...
US20090315745 Auto Ranging System and Method for Analog Signal  
Disclosed herein are embodiments of an auto ranging system and method for an analog signal. A microprocessor is configured to digitally control the programmable gains of an operational amplifier...
US20100060496 MINIMIZING ADVERSE EFFECTS OF SKEW BETWEEN TWO ANALOG-TO-DIGITAL CONVERTERS  
Skew between a first clock signal received by a first analog-to-digital converter (ADC) and a second clock signal received by a second ADC is adjusted to minimize error. Each ADC has an ADC...
US20130321188 System and Method for Operating an Analog to Digital Converter  
A system and method can be used for scaling an output of a modulator of a sigma-delta analog to digital converter and systems and a method can be used for compensating temperature-dependent...
US20100066574 Hybrid Analog to Digital Converter Circuit and Method  
A hybrid analog to digital converter circuit for a feedback input to a digital controller of a power supply includes a high resolution, analog to digital converter circuit in communication with a...
US20080129562 Semiconductor Integrated Circuit Having Jitter Measuring Function  
A semiconductor integrated circuit having jitter measuring function includes a slicer (11), a T/V converter (12), an A/D converter (13), a processor (14), a multiplexer (15), and a correction...
US20110260899 INL correction circuitry and method for SAR ADC  
INL error in a SAR ADC (10) is reduced by providing correction capacitors (11B) each having a first terminal connected to a conductor (13) which is also connected to one terminal of the capacitors...
US20130076545 TIME ERROR ESTIMATING DEVICE, ERROR CORRECTION DEVICE AND A/D CONVERTER  
A time error estimating device for estimating a sampling time error of each of a plurality of sampling circuits when the sampling circuits generates a plurality of sampling output signals by...
US20100097252 CALIBRATION DEVICE AND METHOD THEREOF FOR PIPELINED ANALOG-TO-DIGITAL CONVERTER  
A calibration device comprises a comparison unit, a counting unit, a memory, and a compensation circuit. A residue of a sub analog-to-digital converter is compared with a first and a second...
US20110102216 APPARATUS FOR CORRECTING SETTING ERROR IN AN MDAC AMPLIFIER  
Multiplying digital-to-analog converters (MDACs), which are generally employed in pipelined analog-to-digital converters (ADCs), can have a settling error associated with the MDAC amplifier. Here,...
US20070182604 Sample selector time domain interpolation  
A signal resampler carries out a time domain interpolation of an input signal for compensating for frequency offset, such as found in an ADSL system. A sample selector interpolator carries out...
US20130241754 DIGITAL-TO-ANALOG CONVERTER WITH NON-UNIFORM RESOLUTION  
A circuit includes a digital-to-analog converter with non-uniform resolution for converting a digital signal into an analog signal. The digital-to-analog converter includes high-resolution...
US20150214972 VERSATILE DETECTION CIRCUIT  
A versatile detection circuit is optimized for low sensor voltages and contains a microprocessor. The microprocessor contains an integrated analog-to-digital converter with an input pin. The...
US20150256189 DIGITAL EXTRACTION AND CORRECTION OF THE LINEARITY OF A RESIDUE AMPLIFIER IN A PIPELINE ADC  
Embodiments of a pipeline analog-to-digital converter is provided. In accordance with some embodiments, a pipeline analog-to-digital converter includes a stage, the stage including a residue...
US20150066159 ANALOG CONVERTER AND PROGRAMMABLE LOGIC CONTROLLER SYSTEM  
An analog converter includes an offset/gain value storage unit that is composed of a nonvolatile memory and stores therein offset/gain values, an operation unit that performs analog-digital...
US20120212358 PIPELINED ADC INTER-STAGE ERROR CALIBRATION  
An analog-to-digital converter (ADC) is provided. The ADC includes a plurality of pipelined ADCs and an adjustment circuit. Each pipelined ADC is adapted to receive an analog input signal, has an...
US20090243900 ANALOG DIGITAL CONVERTER, A/D CONVERSION STAGE, METHOD FOR GENERATING DIGITAL SIGNAL CORRESPONDING TO ANALOG SIGNAL, AND METHOD FOR GENERATING SIGNAL INDICATING CONVERSION ERROR IN THE A/D CONVERSION STAGE  
A conversion operation B is performed with respect to a sample value R in an A/D conversion stage 101 to generate a conversion result D3, and a sampling operation A is performed with respect to...
US20090184853 ANALOG TO DIGITAL CONVERTER WITH IMPROVED INPUT OVERLOAD RECOVERY  
An aspect of the present invention avoids an amplifier of an analog to digital converter (ADC) from entering a saturation region. In an embodiment, a sample of an input signal to an ADC is...
US20110133966 SWITCHED-CAPACITOR INPUT CIRCUIT AND ANALOG-TO-DIGITAL CONVERTER INCLUDING THE SAME  
A switched-capacitor input circuit which receives an analog input signal, and samples and holds the analog input signal, comprising an amplifier, at least one capacitor, one terminal of the...
US20150263752 SEMICONDUCTOR DEVICE AND ELECTRONIC CONTROL DEVICE  
To suppress detection accuracy of a measurement resistance from decreasing by an on-resistance of a selector switch. The selector switch is provided between a first node coupled to a first voltage...
US20150109155 SEMICONDUCTOR DEVICE AND ELECTRONIC CONTROL DEVICE  
To suppress detection accuracy of a measurement resistance from decreasing by an on-resistance of a selector switch. The selector switch is provided between a first node coupled to a first voltage...
US20140375487 MDAC with differential current cancellation  
Various embodiments of the invention provide for cancellation of a residue amplifier output charging current at the reference voltage source of the reference buffer thereby preventing the charging...
US20120274491 GRADIENT-BASED APPROACH TO SAMPLE-TIME MISMATCH ERROR CALIBRATION IN A TWO-CHANNEL TIME-INTERLEAVED ANALOG-TO-DIGITAL CONVERTER  
Correcting phase error in a two-channel TIADC system in a manner that is independent of the Nyquist zone(s) occupied by the input signal. In the preferred approach this is done using the gradient...
US20130187801 GAIN AND DITHER CAPACITOR CALIBRATION IN PIPELINE ANALOG-TO-DIGITAL CONVERTER STAGES  
A switching scheme is used during a calibration mode for determining calibration coefficients of each calibrated stage of a pipeline analog-to-digital converter (ADC). A calibrated stage of the...
US20150077278 SAMPLING  
There is disclosed current-mode time-interleaved sampling circuitry configured to be driven by substantially sinusoidal clock signals. Such circuitry may be incorporated in ADC circuitry, for...

Matches 1 - 50 out of 370 1 2 3 4 5 6 7 8 >