Matches 201 - 250 out of 946 < 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 >
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7034724 Training circuit and method of digital-analog converter and analog-digital converter  
A training method of a digital-analog converter is provided. The digital-analog converter comprises a plurality of parallel capacitors, each of which is floatingly coupled to a plurality of...
7034722 ADC calibration to accommodate temperature variation using vertical blanking interrupts  
In digital display circuitry, configured to display an image encoded in an analog display signal, the digital display circuitry includes analog-to-digital converter (ADC) circuitry to recover pixel...
7031683 Apparatus and methods for calibrating signal-processing circuitry  
A calibration circuitry includes an adjustable capacitor, a voltage generator, a reference voltage generator, and a controller. The reference voltage generator provides a reference voltage. The...
7030794 System, method, and software for testing electrical devices  
A method according to a first aspect may include performing a first analog-to-digital (A/D) conversion using an A/D converter. Data associated with this first A/D conversion may be read using a...
7030791 A/D conversion device having input level shift and output correction function  
In an A/D conversion device, one level shift circuit shifts an input voltage to the low potential side by Vt 1 , and another level shift circuit shifts the input voltage to the high potential side...
7026968 Analog-to-digital converter and method with switched capacitors for reduced memory effect  
Methods and structures are provided that reduce conversion errors in pipelined analog-to-digital converters which are induced in one converter cycle by component memory of signals in one or more...
7026967 Method for calibrating a digital-to-analog converter and a digital-to-analog converter  
The invention describes a method for digitally calibrating a segmented current-steering D/A-converter. One embodiment of the present invention is a 14-bit DAC, where 6 MSB's are converted with two...
7026966 Digital-to-analog converter comprising an integrated test circuit  
In a digital-to-analog converter including an integrated test circuit, a digital input and an analog output, a comparator ( 5 ) capable of being connected with the analog output ( 4 ) and including...
7023366 Using a parametric measurement unit for converter testing  
In one aspect, the invention is an integrated circuit (IC) for use in testing an analog-to-digital (ADC) converter includes a first channel of a parametric measurement unit (PMU) configured to send...
7015841 Analog to digital converter circuit of successive approximation type operating at low voltage  
In a sampling and holding, a control logic circuit connects another end of each capacitor of a DA converter to a ground potential, and outputs a sampled input analog signal from a switched...
7012558 A/D converter, battery pack, electronics device and method of voltage measurement  
An amplifying circuit amplifies and outputs voltage difference between first external input voltage and voltage corresponding to second external input voltage. An A/D converting circuit converts...
7012556 Signal processing system and method  
An adaptive signal processing system ( 800 ) comprises a plurality of receiving elements ( 802 a–n ), a plurality of analogue to digital converters (ADC's) ( 806 a–n ) and a digital signal...
7009541 Input common-mode voltage feedback circuit for continuous-time sigma-delta analog-to-digital converter  
A novel circuit is used to monitor the common-mode voltage at the summing junctions of the first integrator in a continuous-time ΣΔ ADC, wherein the circuit produces a control voltage which...
7009538 High-speed DAC linearity measurement  
A high-speed digital-to-analog converter (DAC) measurement method acquires and quantizes an analog ramp output by the DAC corresponding to a digital ramp input to produce a quantized ramp,...
7009537 Apparatus for detecting A/D converter abnormality  
An apparatus for detecting an abnormality in an A/D converter has a voltage accumulating capacitor. The apparatus includes a storage circuit which receives analog signals whose range of signal...
7009536 Analog-to digital converter compensating apparatus and associated methods  
An analog-to-digital converter compensating apparatus and associated methods are provided. The apparatus can include an ADC, a state-slope sampler responsive to output data of the ADC to produce a...
7002496 All-digital calibration of string DAC linearity using area efficient PWL approximation: eliminating hardware search and digital division  
A system and method of calibrating a digital-to-analog converter (DAC) such as a resistor string DAC that reduces costs by making more efficient use of integrated circuit chip area, without...
7002495 Analog to digital converter with distortion correction  
A method of correcting for output distortion of an analog to digital converter (ADC) is disclosed. The method comprises estimating the output distortion and providing an estimated distortion. The...
6999013 Built-in real-time digital non-linearity measurement device and method for analog to digital converters  
A nonlinearity detection system for an analog to digital converter (ADC) comprises a signal generator that generates a periodic signal that is output to the ADC and that comprises first and second...
6996488 Sensor signal conditioner  
A sensor signal conditioner for temperature compensating, linearizing, and amplifying sensor signal output in electronic instrumentation circuits includes a programmable gain instrument amplifier...
6993441 Adaptive error correction in an oversampled ADC  
An analog-to-digital converter (ADC) exhibiting an uncorrected non-linear transfer function receives measured analog voltage amplitudes and outputs uncorrected digital values. A calibration circuit...
6992611 DC-coupled wideband signal converters  
Signal converters are provided that accurately process dc-coupled source signals in the presence of different predetermined voltage and current source requirements. Processing structures are...
6987472 Built-in-self-test apparatus and method for analog-to-digital converter  
A built-in-self-test apparatus for an analog-to-digital converter includes a digital-to-analog converter, a low-pass filter, a histogram analyzer and a software engine. The digital-to-analog...
6985098 Analog front end circuit and method of compensating for DC offset in the analog front end circuit  
DC offset is compensated for in an analog front end (AFE) circuit having an amplifier and an analog-to-digital converter (ADC). First data processed by the ADC are low pass filtered and estimated...
6980141 Analog input for electronic circuit  
The invention relates to an analog input for electronic circuit, which input is intended to be connected to an electrical output of a sensor for measuring a physical parameter, the sensor being...
6977603 Nonlinear flash analog to digital converter used in an active pixel system  
A non-uniform resistor is used with a flash A to D converter in order to provide an A to D output which is not linear. The nonlinearity of the A to D output is specially designed to carry out a...
6975260 Geometric D/A converter for a delay-locked loop  
A geometric DAC architecture includes a series of substantially identical sub-DACs, each sub-DAC having n taps. The sub-DACs are fed from a bias-DAC having m=(total number of taps needed)/n taps....
6972701 A/D converter calibration  
A D/A converter range calibration system in an A/D converter structure including a set of comparators with associated calibrating D/A converters includes means (RCC) for determining the offset...
6970120 Method and apparatus for start-up of analog-to-digital converters  
An analog-to-digital (ADC) converter circuit that converts an analog input signal into a digital output circuit includes a calibration coefficient computation circuit for computing calibration...
6967603 ADC background calibration timing  
A background calibrating, skip and fill, analog/digital converter (ADC) generates an output data sequence having successive data elements representing magnitudes of successive samples of an analog...
6965333 Circuit for using capacitor voltage divider in a delta-sigma digital-to-analog converter to generate reference voltage  
An improved circuit for a delta-sigma digital-to-analog converter comprises integrating operational amplifier, sampling capacitors, integrating capacitor, and a voltage divider consisting of a...
6965332 Methods and apparatus for digital offset correction using an ADC with an increased input range  
One embodiment of the invention is directed to a method comprising an act of performing digital correction of an offset in a system comprising an analog-to-digital converter (ADC) having a usable...
6956517 Systems and methods for multi-channel analog to digital conversion  
Systems and methods for analog to digital conversion that may be implemented using a digital to analog converter (DAC) to provide negative feedback to cancel signals at the input of an analog to...
6956512 Analog-to-digital converter for programmable logic  
Digital-to-analog and analog-to-digital conversion are implemented in or using programmable logic. The DAC and ADC circuits may be hardwired in a programmable logic integrated circuit or may be...
6950046 IC with built-in self-test and design method thereof  
IC with built-in self-test and design method thereof. The IC comprises an SD-ADC and a Dft circuit. The Dft circuit uses a digital stimulus signal to solve the deadlock problem of the on-chip...
6943712 Voltage built-in real-time digital non-linearity measurement device and method for analog to digital converters  
A nonlinearity detection system and method for an analog to digital converter (ADC) includes a triangular wave generator that generates a triangular wave that is output to the ADC. A differentiator...
6933869 Integrated circuits with temperature-change and threshold-voltage drift compensation  
Integrated circuits are stabilized by monitoring changes that affect circuit operation and by compensating for those changes using power supply adjustments. Changes in operating temperature and...
6933868 Testing of mixed signal integrated circuits generating analog signals from digital data elements  
Testing of a mixed signal integrated circuit (IC) potentially in the form of a die using a tested/calibrated integrated circuit. In an embodiment, the mixed signal IC generates an analog signal...
6933867 A/D conversion processing apparatus providing improved elimination of effects of noise through digital processing, method of utilizing the A/D conversion processing apparatus, and electronic control apparatus incorporating the A/D conversion processing apparatus  
In an A/D conversion control apparatus for use in an electronic controller such as an engine ECU of a vehicle, each of successive sets of A/D converted values of an analog signal (each set...
6927713 Response-based analog-to-digital conversion apparatus and method  
An apparatus and method for increasing the resolution of analog-to-digital conversion devices and systems is described. The described apparatus and method operate without significantly increasing...
6924755 MULTI-CHANNEL ANALOG TO DIGITAL CONVERTER WHICH FACILITATES CALIBRATION OF THE ANALOG TO DIGITAL CONVERTER AND RESPECTIVE INPUT CHANNELS TO THE ANALOG TO DIGITAL CONVERTER, AND A METHOD FOR CALIBRATING THE ANALOG TO DIGITAL CONVERTER  
A multi-channel analog to digital converter which facilitates calibration of the analog to digital converter and respective input channels to the analog to digital converter, and a method for...
6919835 Infinite electronic integrator  
An electronic integrator includes a compensation circuit which maintains an output of the integrator within a desired range. The compensation circuit includes a comparator which continuously...
6917320 Method and device for use in DC parametric tests  
A system and device suitable for use in performing a DC parametric test on an external load is provided. The device may be configured to apply a desired voltage or current to the external load. The...
6911925 Linearity compensation by harmonic cancellation  
A linearity compensation circuit provides cancellation of harmonic distortion introduced by a non-linear system into an input signal by providing a separate harmonic correction component for each...
6911924 Analog unit system  
An analog unit system according to this invention comprises a first analog unit having first storage means for storing a first factory setting value and a first user setting value, second storage...
6909392 Analog to digital converter using multiple staggered successive approximation cells  
An image sensor system using offset analog to digital converters. The analog to digital converters require a plurality of clock cycles to carry out the actual conversion. These conversions are...
6909388 Fractal sequencing schemes for offset cancellation in sampled data acquisition systems  
The present invention is directed to the isolation and cancellation of the offset voltage component typically experienced at the input of sampled-data analog systems. In an exemplary embodiment,...
6909387 Circuit, apparatus and method for improved current distribution of output drivers enabling improved calibration efficiency and accuracy  
A circuit, apparatus and method for efficiently and accurately calibrating an output driver current are provided in embodiments of the present invention. In an embodiment of the present invention,...
6906658 Reducing droop in a reference signal provided to ADCs  
An aspect of the present invention reduces droop in the reference signal provided to ADCs. A compensation resistor of appropriate resistance value is provided in the path of the reference signal to...
6903670 Circuit and method for cancellation of column pattern noise in CMOS imagers  
A circuit and method measure the output voltage of a CMOS pixel in a manner that substantially reduces all columnar pattern noise due to mismatches in the signal processing circuits including the...
Matches 201 - 250 out of 946 < 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 >