Matches 1 - 50 out of 296 1 2 3 4 5 6 >


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US20090167578 ANALOG-TO-DIGITAL CONVERTER AND COMMUNICATION DEVICE AND WIRELESS TRANSMITTER AND RECEIVER USING THE SAME  
In a wireless transmitter and receiver, a background calibration type analog-to-digital converter generally occupies a large area because of the phase compensating capacity of an op-amp included...
US20150138004 METHOD FOR CALIBRATING A PIPELINED CONTINUOUS-TIME SIGMA DELTA MODULATOR  
Traditionally, pipelined continuous-time (CT) sigma-delta modulators (SDM) have been difficult to build due at least in part to the difficulties in calibrating the pipeline. Here, however, a...
US20120262319 METHOD FOR CALBRATING A PIPELINED CONTINUOUS-TIME SIGMA DELTA MODULATOR  
Traditionally, pipelined continuous-time (CT) sigma-delta modulators (SDM) have been difficult to build due at least in part to the difficulties in calibrating the pipeline. Here, however, a...
US20120086590 METHOD FOR CALBRATING A PIPELINED CONTINUOUS-TIME SIGMA DELTA MODULATOR  
Traditionally, pipelined continuous-time (CT) sigma-delta modulators (SDM) have been difficult to build due at least in part to the difficulties in calibrating the pipeline. Here, however, a...
US20150097710 ADC CALIBRATION  
An analog-to-digital converter (ADC) includes a plurality of comparators connected to the ADC. The ADC further includes a plurality of switches, wherein switches connected to a corresponding...
US20120133535 Interleaved Pipelined Binary Search A/D Converter  
The present invention is related to a pipelined analog-to-digital converter, ADC, for converting an analog input signal into a digital signal comprising—a plurality of comparing means having...
US20120223848 Calibration Device for Mobile Terminal and ADC Module Thereof  
The present invention relates to the field of mobile terminal technology and describes a calibration device for a mobile terminal and an ADC module thereof, the ADC module being disposed inside a...
US20150116138 SYSTEM AND METHOD OF IMPROVING STABILITY OF CONTINUOUS-TIME DELTA-SIGMA MODULATORS  
An analog-to-digital converter (ADC) can include a continuous-time delta sigma modulator and calibration logic. The calibration logic can calibrate direct feedback and flash clock delay...
US20110137604 REAL-TIME ADAPTIVE HYBRID BiST SOLUTION FOR LOW-COST AND LOW-RESOURCE ATE PRODUCTION TESTING OF ANALOG-TO-DIGITAL CONVERTERS  
An integrated circuit configured to perform hybrid built in self test (BiST) of analog-to-digital converters (ADCs) is described. The integrated circuit includes an ADC. The integrated circuit...
US20100007535 Circuit with Calibration Circuit Portion  
In an embodiment, a circuit is disclosed comprising a circuit portion coupled to a terminal and a calibration circuit portion coupled to said terminal.
US20120326903 METHOD AND APPARATUS FOR PERFORMING NONLINEARITY CALIBRATION  
A method for performing nonlinearity calibration includes the steps of: obtaining temporarily values of a plurality of compensation parameters by performing a perturbation-based calibration...
US20100182175 Current Sensing and Background Calibration to Match Two Resistor Ladders  
In one embodiment, a first resistor ladder includes a first voltage across the first resistor ladder. A second resistor ladder includes a second voltage across the second resistor ladder. A third...
US20150249459 ELECTRONIC SYSTEM AND OPERATING METHOD THEREOF  
To compensate for non-linearity of an AD conversion unit and non-linearity of a DA conversion unit in an electronic system including the DA conversion unit and the AD conversion unit, an...
US20140333459 ELECTRONIC SYSTEM AND OPERATING METHOD THEREOF  
To compensate for non-linearity of an AD conversion unit and non-linearity of a DA conversion unit in an electronic system including the DA conversion unit and the AD conversion unit, an...
US20110199244 Pipelined ADC Calibration  
A method of calibrating a pipelined analog to digital converter (400) having a plurality of DAC elements (410) and an additional calibration DAC element (420), in which a combination of positive,...
US20130015990 TRACK AND HOLD ARCHITECTURE WITH TUNABLE BANDWIDTH  
To date, bandwidth mismatch within time-interleaved (TI) analog-to-digital converters (ADCs) has been largely ignored because compensation for bandwidth mismatch is performed by digital...
US20090284629 A/D CONVERTER-INCORPORATED SOLID-STATE IMAGING DEVICE  
The solid-state imaging device includes: a first node for receiving a first signal from outside the solid-state imaging device; a second node for receiving a second signal from outside the...
US20130050000 Synthesis Method Of Sigma-delta Modulator Capable Of Relaxing Circuit Specification And Reducing Power  
A synthesis method of Sigma-Delta modulator capable of relaxing circuit specification and reducing power consumption, comprising the following steps: firstly, set a target bandwidth and a target...
US20110316730 ANALOG UNIT  
An ADC code given in response to input of an analog input value to an A/D converter circuit is measured at a site where an A/D converter unit is used to measure a user-measured value. A user-set...
US20120249351 ADC CALIBRATION  
An analog-to-digital converter (ADC) including a plurality of comparators connected to the ADC. The ADC further includes a first pair of terminals and a second pair of terminals connected to each...
US20110037632 ADC CALIBRATION  
An analog to digital convertor (ADC) includes a plurality of comparators one of which is referred to as an auxiliary comparator (e.g., comparator “Aux”). This comparator Aux is calibrated in the...
US20110043395 DIGITAL BACKGROUND CALIBRATION IN PIPELINED ADCS  
Digital background calibration in a pipelined ADC is performed by extracting a capacitor mismatch value Δ that represents a mismatch between a sampling capacitor C1 and a feedback capacitor C2 in...
US20130106631 INTERLEAVED ADC CALIBRATION  
The present disclosure includes calibration circuitry for adjusting the bandwidth of at least one sub-converter of an interleaved analog to digital converter (ADC), the at least one sub-converter...
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...
US20140333460 MEMORYLESS SLIDING WINDOW HISTOGRAM BASED BIST  
A chip with a built-in self-test (BIST) component capable of testing the linearity of an ADC is described herein. The BIST component uses hardware registers to facilitate a sliding histogram...
US20110037630 VOLTAGE MODE DAC WITH CALIBRATION CIRCUIT USING CURRENT MODE DAC AND ROM LOOKUP  
The invention is a novel scheme of calibrating a voltage-mode digital to analog converter using a current-mode digital to analog converter. A DAC system is comprised of a voltage-mode DAC with an...
US20130307712 CALIBRATING TIMING, GAIN AND BANDWIDTH MISMATCH IN INTERLEAVED ADCs USING INJECTION OF RANDOM PULSES  
A method and a corresponding device for calibrating an interleaved analog-to-digital converter (ADC) involve injecting a pulsed, substantially-random signal into a plurality of channels in the...
US20120212359 ADC Calibration Apparatus  
An analog-to-digital (ADC) calibration apparatus comprises a calibration buffer, a comparator and a digital calibration block. Each reference voltage is sent to a track-and-hold amplifier as well...
US20140167988 DIGITAL-TO-ANALOG CONVERTER (DAC) CIRCUIT AND WEIGHT ERROR ESTIMATION/CALIBRATION METHOD THEREOF  
The present invention discloses a DAC circuit and a weight error estimation/calibration method thereof. In the method, an output switching circuit dynamically selects several conversion cells (at...
US20110309961 A/D CONVERSION CIRCUIT AND A/D CONVERSION METHOD  
An analog-to-digital conversion circuit includes: comparators to compare an input analog signal and one of reference voltages corresponding to each operation in an analog-to-digital conversion; an...
US20090131010 ANALOG-DIGITAL CONVERTER CHIP AND RF-IC CHIP USING THE SAME  
In a wireless receiving circuit of high data rate, a circuit area and current consumption occupied by an analog-digital converter increase. The present invention, in a wireless receiving circuit...
US20120169521 CALIBRATION OF TIME CONSTANTS IN A CONTINUOUS-TIME DELTA-SIGMA CONVERTER  
A circuit for calibrating selective coefficients of a delta-sigma modulator is provided. The circuit includes a calibration logic module that is coupled to one of a plurality of stages of the...
US20120274492 METHOD FOR IMPROVING THE PERFORMANCE OF THE SUMMING-NODE SAMPLING CALIBRATION ALGORITHM  
An integrated circuit allows for the isolation of the input of an analog-to-digital converter (ADC) from a summing-node (SNS) algorithm. The integrated circuit contains a gating device that is...
US20140203954 ADC TESTING  
A histogram-based method for testing an electronic converter device, such as an analogue to digital converter, includes steps of defining at least one histogram hyperbin arranged to store hits for...
US20100164765 DAC calibration circuits and methods  
Provided is a DAC with tuning circuitry in accordance with some embodiments for tuning current sources in the DAC. The DAC may be used for a sigma-delta converter in some embodiments.
US20120007757 DIGITAL-TO-ANALOG CONVERTER (DAC) CALIBRATION SYSTEM  
The present invention relates generally to a digital-to-analog converter (DAC) calibration. The present invention may be implemented by a DAC calibration system including a first current source, a...
US20100039302 Correlation-based background calibration of pipelined converters with reduced power penalty  
A device and method for correlation-based background calibration of pipelined converters with a reduced power penalty. A pipelined analog-to-digital converter (ADC) utilizes a random or...
US20080266153 HIGH RESOLUTION DIGITAL ANALOG CONVERSION CIRCUIT  
To increase the accuracy and resolution of an m bit digital analog converter, n bit input values with n>m are fed to a control circuit and converted to a series of control values for the digital...
US20090322574 TIME-TO-DIGITAL CONVERSION WITH DELAY CONTRIBUTION DETERMINATION OF DELAY ELEMENTS  
A time-to-digital converter includes at least one chain of delay elements, a status of which represents a digital signal relating to a time interval to be converted. The converter includes a...
US20100045496 SEMICONDUCTOR DEVICE AND METHOD OF CONTROLLING THE SAME  
A semiconductor device is described which includes a first comparator judging the level of an input signal based on a first judgment value, a second comparator judging the level of the input...
US20120001784 Integrating (SLOPE) DAC Architecture  
A current source is used to pre-charge a capacitor to a known value. The capacitor can then be connected to a unity gain buffer to provide a low cost DAC. The DAC can include a self-calibration...
US20130335246 A/D Converter reference calibration  
Calibrating of A/D converters is carried out by obtaining adjustable reference voltages which are used in in A/D conversion, comparing a first divided reference voltage of a full range voltage...
US20140266824 CALIBRATION OF A SWITCHING INSTANT OF A SWITCH  
An apparatus for calibration of a signal converter is disclosed. This apparatus includes a first digital-to-analog converter (“DAC”) and a calibration system coupled to an output port of the first...
US20130127648 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...
US20110304361 TIME-TO-DIGITAL CONVERTER WITH CALIBRATION  
Time-to-digital converter arrangements and corresponding methods as well as applications thereof are described. The time-to-digital converter in a first mode is coupled with a calibration signal...
US20100085227 Stage-Resolution Scalable Opamp-Sharing Technique for Pipelined/Cyclic ADC  
An analog-to-digital converter (ADC) for pipelined ADCs or cyclic ADCs is disclosed. The ADC includes at least one pair of two stages connected in series, and the two stages have different bits of...
US20110122006 CALIBRATION METHOD AND RELATED CALIBRATION APPARATUS FOR CAPACITOR ARRAY  
A capacitor array includes a plurality of capacitor components each having a first node and a second node, and first nodes of the capacitor components are coupled to each other. A calibration...
US20100073207 Delta-Sigma Analog-to-Digital Converters and Methods to Calibrate Delta-Sigma Analog-to-Digital Converters  
Delta-sigma analog-to-digital converters (ADCs) and methods to calibrate methods to delta-sigma ADCs are disclosed. In one particular example, a delta-sigma ADC is described, including an n-bit...
US20120133536 DAC CALIBRATION  
Mechanisms to calibrate a digital to analog converter (DAC) of an SDM (sigma delta modulator) are disclosed. An extra DAC element in addition to the DAC is used to function in place of a DAC...
US20110037631 DAC CALIBRATION  
Mechanisms to calibrate a digital to analog converter (DAC) of an SDM (sigma delta modulator) are disclosed. An extra DAC element in addition to the DAC is used to function in place of a DAC...

Matches 1 - 50 out of 296 1 2 3 4 5 6 >