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7400281 Regulator of a digital-to-analog converter and related converter  
A regulator for a digital-to-analog converter having in input a digital signal and suitable for providing an analog signal in output, the regulator including at least one pair of buffers having in...
7400280 Analog to digital converter calibration via synchronous demodulation  
A technique for dynamically calibrating a successive approximation charge to digital converter by toggling at least some portion of the converter between two predetermined states, with the design...
7394415 Time-interleaved analog-to-digital converter and high speed signal processing system using the same  
A time-interleaved analog-to-digital converter stores in a correction information memory, correction information required to correct an error between signals output by a plurality of N...
7394413 Reduced complexity nonlinear filters for analog-to-digital converter linearization  
A method of converting an input analog signal to a compensated digital signal comprises converting the input analog signal to an uncompensated digital signal, inputting the uncompensated digital...
7391354 Semiconductor integrated circuit  
One input terminals of switches respectively coupled to capacitors of a capacitance array type D/A converter configured as a main DAC are coupled to a first external terminal of an IC. On the other...
7391349 Test apparatus and method for testing analog/digital converters  
A method for testing AD converters ( 10 ) may have the steps of a) producing a digital test signal, b) producing an analog test signal as input signal for the AD converter ( 10 ) from the digital...
7391348 Reducing noise associated with local reference-potential fluctuations in mixed-signal integrated circuits  
An integrated circuit (IC) adapted to (i) measure a voltage differential between a ground potential external to the IC and a ground potential internal to the IC and (ii) based on the measurement...
7385546 Digitizer module, a waveform generating module, a converting method, a waveform generating method and a recording medium for recording a program thereof  
A digitizer module comprises an AD converter for sampling a pair of analog signals at a predetermined time interval and converting into a first and second digital signals respectively, a second...
7385542 Digitizer module, a waveform generating module, a converting method, a waveform generating method and a recording medium for recording a program thereof  
A digitizer module comprises an AD converter for sampling a pair of analog signals at a predetermined time interval and converting into a first and second digital signals respectively, a second...
7385536 Methods and circuits for output of sample-and-hold in pipelined ADC  
Methods and circuit embodiments are disclosed for implementing an improved signal path for a sample-and-hold output. In exemplary embodiments, a sample-and-hold signal path for use in a pipelined...
7382299 Method of calibrating digital-to-analog converter input based on analog-to-digital converter output and analog encoding apparatus employing the method  
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...
7382298 Code-correction structures and methods for digital displays  
Analog-to-digital converters (ADCs) generally make code errors as they convert analog display signals to digital display signals of digital displays. Code-correction structures are provided that...
7378999 Method and apparatus for digital calibration of an analog-to-digital converter  
Method and apparatus for digital calibration of an analog-to-digital converter (ADC). One example relates to calibrating an analog-to-digital (A/D) conversion system having an N-bit resolution. The...
7378998 Correction of static mismatch errors in a D/A converter  
Methods, articles of manufacture and systems for the correction of static mismatch errors in D/A converters, where an input word, being the digital representation of an analog input signal, is...
7372385 A/D converter, signal processor, and receiving device  
An A/D converter which converts an analog current signal into a digital signal, includes: a filter removing a noise component from the analog current signal to output an analog voltage signal; a...
7369072 Method and apparatus for calibrating imaging device circuits  
A method of operating an imaging device, an imaging device, a camera system including an imaging device, and a processing system including an imaging device for calibrating an analog-to-digital...
7365662 DC-offset correction circuit for a communication system and method of correcting a DC-offset in a communication system  
A DC-offset correction circuit includes an analog circuit to generate a plurality of analog offset-correction signal values, each of which are assigned to a hop band. The analog circuit is coupled...
7362247 Digital correction of nonlinearity errors of multibit delta-sigma digital to analog converters  
Digital correction of multibit ADAC nonlinearities for error feedback DACs is provided. The integral nonlinearity (INL) error of the multibit ADAC is estimated (on line or off line) by a...
7358877 Obsolescence mitigation for electron bombarded semiconductor tubes in programmable waveform digitizers  
Method for replacing Electron Bombarded Semiconductor (EBS) tubes in a waveform digitizer having an analog input interface and a digital output interface, the EBS tubes being interposed between the...
7358876 Mixed-mode analog offset cancellation for data conversion systems  
A circuit includes a chopper switch to receive an analog input signal and output a first chopped signal of a first polarity during a first clock phase and a second chopped signal of a second...
7356424 Diagnostic compiler for pipeline analog-to-digital converter, method of compiling and test system employing the same  
The present invention is directed to a diagnostic compiler for use with a pipeline analog-to-digital converter (ADC) having code sequences corresponding to stages thereof. In one embodiment, the...
7355537 Built-in self-test apparatus and method for digital-to-analog converter  
A built-in self-test apparatus for a digital-to-analog converter uses a differentiation unit for differentiating a digital-to-analog (DA) signal to obtain the differences between pulses of the...
7355536 System and method for digital compensation of digital to analog and analog to digital converters  
The present invention relates to a system and method for digitally compensating signal converters and in particular a digital to analog converter which receives digital input data for a digital to...
7352312 Variable passive components with high resolution value selection and control  
The present system provides a method for varying the value of passive components in electronic circuits. Passive components can range from basic resistors, capacitors, and inductors to complex,...
7352308 DC offset correction device and method  
It is an object of the present invention to provide a DC offset correction means capable of correctly performing DC offset correction even when transmitting a non-modulation signal in radio...
7352307 Comparator chain offset reduction  
Comparator chain total offset, static and dynamic, is reduced by injecting a compensation quantity in at least one point in the chain of comparator components. The compensation quantity is...
7348910 Reference module apparatus and method therefor  
A Root Mean Square (RMS) detector circuit includes a first differential pair circuit arranged to operate in a common mode. The detector circuit also includes a compensation circuit unit having a...
7348907 Range compression in oversampling analog-to-digital converters  
An analog-to-digital converter according to the invention is provided. The analog-to-digital converter preferably includes an analog input signal, a first reference signal, a second reference...
7342524 Waveform generator, waveform shaper, and testing apparatus  
There is provided a waveform generator that generates a waveform. The waveform generator includes: a lamp waveform generating section that generates a lamp wave of which a signal value linearly...
7342523 Testing apparatus  
To provide a testing apparatus having a function of testing a D/A converter and so forth with a reduced testing time. The testing apparatus tests a converter having functionality of converting an...
RE40106 Calibration of isolated analog-to-digital converters  
Measurement data collected by isolated ADCs in multiple channels may be related. In such a scenario, data may be transmitted to a microcontroller or programmable logic device for centralized...
7336214 Analog to digital converter circuit with offset reduction and image sensor using the same  
An image sensor may be improved by using ADCs that compensate for the effect of comparator input offset on comparator decisions. Offset compensation may be implemented in an ADC by using an...
7333040 Flash ADC with sparse codes matched to input noise  
An analog-to-digital converter (ADC) architecture to implement a non-linear flash ADC. The apparatus includes a non-linear resistor, a non-linear comparator, and an inverse non-linear encoder. The...
7333038 Eliminating the effects of the temperature coefficients of series resistance on temperature sensors  
An embodiment of the present invention is directed to a method for reducing the effects of temperature coefficients of series resistance in a temperature sensing circuit having a temperature...
7330141 Compensation circuit and compensation method to compensate nonlinear distortions of an A/D converter  
The invention relates to a compensation circuit ( 1–6 ) to compensate nonlinear distortions of an A/D converter comprising a signal input and a compensation system. In order to avoid the high...
7324031 Dynamic bias circuit  
A bias circuit includes a digital to analog converter (D2A) generating an output representing a voltage level for tuning an analog signal. The D2A is coupled to a primary register frame that is one...
7324028 Self-calibrating continuous-time delta-sigma modulator  
A self-calibrating continuous-time delta-sigma modulator determines whether time constants of its internal integrators are too large or too small by injecting a calibrating sequence into the...
7324027 Circuit and method for testing analog-digital converter  
A circuit for testing an analog-digital converter includes: a subtracter which receives a converted value having a plurality of bits outputted from the analog-digital converter and an expected...
7324024 High frequency compensator and reproducing device  
A high frequency compensator configured to compensate high frequency component of a digital audio signal comprising a down sampler configured to perform ½ down-sampling for the digital audio...
7321325 Background calibration of continuous-time delta-sigma modulator  
A primary delta-sigma modulator converts a continuous-time input signal into a discrete-time output sequence. A calibration circuit comprising an auxiliary delta-sigma modulator estimates...
7319423 Multi-mode ADC and its application to CMOS image sensors  
An analog-to-digital converter apparatus for analog source signals of one polarity, includes one comparator formed from transistors, a block of digitally addressable voltage sources to set a...
7312734 Calibratable analog-to-digital converter system  
A calibratable analog-to-digital converter system with a split analog-to-digital converter architecture including N Analog-to-Digital Converters (ADCs) each configured to convert the same analog...
7312732 Devices and methods for calibrating amplifier stages and for compensating for errors in amplifier stages of series-connected components  
Devices and methods for calibration of amplifier stages and for compensation of errors in components connected upstream of amplifier stages The described amplifier stage calibration comprises the...
7310266 Semiconductor device having memory cells implemented with bipolar-transistor-antifuses operating in a first and second mode  
A DAC having a memory mat including a plurality of first memory cells, and a plurality of output lines connected to the plurality of first memory cells. Each of the plurality of memory cells has a...
7307561 Method and device for functionally testing an analog to-digital converter and a corresponding analog-to-digital converter  
A method and device for function testing an analog-digital converter, the analog-digital converter performing a function for converting at least one analog signal into at least one digital signal...
7307560 Phase linearity test circuit  
A circuit includes a phase interpolator and a self test circuit. The phase interpolator is to provide a interpolator output having a phase corresponding to a respective phase step in a plurality of...
7304597 Adaptive interpolation for use in reducing signal spurs  
A method and apparatus for acquiring an analog signal. The method of the invention comprising the steps of acquiring a first portion of the analog signal by a first channel, the first portion of...
7302354 Cross-path calibration for data acquisition using multiple digitizing paths  
The present invention utilizes multiple A/D (analog-to-digital) paths and cross-path calibration to provide accurate and reliable measurements for each input channel in a data acquisition system....
7298304 Innovative method of correlated double sample (CDS) circuit testing  
The present invention comprises a test set-up ( 20 ) and method of testing a correlated double sampling circuit (CDS) ( 24 ) by using a sinusoidal test signal ( 22 ) for measuring linearity. The...
7292167 Apparatus for error compensation of self calibrating current source  
An apparatus for error compensation of a self calibrating current source adapted for compensating errors of at least one self calibrating current source. The compensation apparatus includes an...
Matches 1 - 50 out of 936 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 >