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6469650 Method and system for selecting implementation of a filter controller between a single conversion mode that ensures a fully-settled converted output and a continuous conversion mode  
A method and system for selecting implementation of a filter controller between a single conversion that ensures a fully-settled converted output and a continuous conversion of an input signal are...
6466153 Highspeed, high spurious-free dynamic range pipelined analog to digital converter  
A method for shuffling capacitors, for application in a stage of a pipelined analog-to-digital converter that samples an input voltage at each of a sequence of sample times and provides a sequence...
6462684 Advanced self-calibrating, self-repairing data acquisition system  
An improved self-calibrating and self-repairing Data Acquisition System (DAS) for use in inaccessible areas, such as onboard spacecraft, and capable of autonomously performing required system...
6462683 Circuit configuration and method for setting the switching points of a decision maker  
A circuit configuration for calibrating the switching points of a decision module that is controlled by an analog input signal, in dependence on a direct component contained in the input signal in...
6463093 METHOD AND APPARATUS TO REDUCE SPURIOUS AND INTERMODULATION PRODUCTS IN WIRELESS BROADBAND MULTI-CARRIER DIGITAL TRANSCEIVER EQUIPMENT THROUGH STATIC NON-LINEARITY CORRECTION OF DIGITAL CONVERSION COMPONENTS  
Apparatus and method to perform the real-time correction of differential non-linearities in a broadband wireless transceiver system using a digital look-up table. Initially, the values for the...
6459394 Multi-bank flash ADC array with uninterrupted operation during offset calibration and auto-zero  
A system and method is disclosed for calibrating comparators of an ADC while the ADC continues to operate in an uninterrupted fashion. Groups (banks) of interleaved comparators may be calibrated at...
6456211 Method and system for calibrating a data converter  
A system ( 100 ) for calibrating data converters ( 101 ) includes a data converter ( 101 ) that receives an input signal and generates one or more pre-digital error correction codes from the input...
6452522 Delta Modulator  
An adaptive delta modulator has an A/D-converter controlled by a digital control signal, which is also supplied to a drift compensation logic circuit, which generates a drift compensated digital...
6452518 A-D converting apparatus, and calibration unit and method therefor  
Analog-to-digital (A-D) converting apparatus ( 100, 120, 130 ) for calibrating a time error includes: an analog signal input portion ( 10 ); a plurality of analog-to-digital converters ( 12 ); a...
6452519 Analog to digital converter utilizing a highly stable resistor string  
A successive approximation ADC is provided. Contacts to a resistor string may be placed outside of the current path of the resistor string to provide a highly stable resistor string having a very...
6449569 Calibration and compensation of delta sigma ADC's and DAC's by correlating noise signals  
The present invention correlates noise from a delta sigma modulator with noise from the same modulator passed through a nonlinear block whose purpose is to isolate the imperfection being measured....
6448918 Digital/analog converter  
It is object to provide a digital-to-analog converter capable of generating an output waveform having less distortion without increasing the operating speed of components. A D/A converter comprises...
6448911 Circuits and methods for linearizing capacitor calibration and systems using the same  
A switched capacitor circuit includes a plurality of capacitor arrays coupled to a node, including an input array, a trim array associated with a selected capacitor of the input array and an offset...
6448919 ADC sharing for keypad and tough panel of a phone  
A keypad that produces a voltage level indicative of a key pressed and a touch panel that produces a voltage level indicative of a location on the touch panel that has been pressed are both coupled...
6445324 Method for dynamic matching of the elements of an integrated multibit digital-to-analog converter with balanced output for audio applications  
A method for digital-to-analog conversion of a digital input code into a first output analog signal and a second output analog signal to be supplied to a first terminal and a second terminal,...
6445330 Capacitively coupled references for isolated analog-to-digital converter systems  
The present invention provides an alternative to Prior Art isolation techniques by providing a capacitively coupled reference voltage and a capacitively coupled gain calibration. The isolation...
6445316 Universal impedance control for wide range loaded signals  
In one embodiment of the present invention, a compensation driving circuit includes a code generator, an enable circuit, and a driver. The code generator generates a driver code from a compensation...
6445329 High speed analog to digital converter  
An analog to digital converter having a group of subrange analysis blocks and reference voltage and offset voltage selection blocks. Each subrange analyses block produces an output representative...
6442213 Digital isolation system with hybrid circuit in ADC calibration loop  
An improved digital capacitive isolation barrier system is provided that is suitable for use in a telephone or modem where the locally powered circuits must be effectively isolated from the public...
6441769 Overcoming finite amplifier gain in a pipelined analog to digital converter  
An apparatus for correcting for the finite gain of an amplifier assembly in a pipelined analog to digital converter (ADC) is disclosed in which an input signal to an amplifier module of one stage...
6438721 Method for testing a current mode interpolator  
In systems requiring the alignment of two clock signals or the alignment of a clock signal to a serial data stream, a current mode interpolator is often used to position the output clock signal....
6433713 Calibration of analog-to-digital converters  
A multislope, continuously integrating analog-to-digital converter can operate in either a conversion mode or a calibration mode. During the calibration mode, a calibration factor is calculated for...
6429796 Method and device for spectrally pure, programmable signal generation  
A method for generating a waveform at a particular frequency in which a segment RAM depth is determined based on the relationship between the frequency and a variable clock value, a RAM based...
6426714 Multi-level quantizer with current mode DEM switch matrices and separate DEM decision logic for a multibit sigma delta modulator  
A multilevel quantizer is provided in combination with dynamic element matching (DEM) circuitry in a multibit sigma-delta modulator. The DEM circuitry is implemented in a divided manner as two...
6426713 Independent control of calibration registers in a multi channel A-D converter  
In a signal processing integrated circuit having a plurality of physical channels and a plurality of gain registers, a plurality of offset registers and an plurality of setup registers, mechanisms...
6424276 Successive approximation algorithm-based architectures and systems  
A digital calibration system for an analog-to-digital converter system includes a computational system receiving digital bits from an analog-to-digital converter representing selection of elements...
6424277 AC calibration apparatus  
AC calibration apparatus ( 2 ) comprising an analogue to digital converter ( 4 ), and in which the absolute gain of the analogue to digital converter ( 4 ) is dynamically assessed by applying a...
6420991 Dynamic element matching for converting element mismatch into white noise for a pipelined analog to digital converter  
A method for practice in a pipelined analog to digital converter. The method converts an analog signal to a sequence of digital words, while converting capacitor mismatch in the stages of the ADC...
6420983 On-line offset cancellation in flash A/D with interpolating comparator array  
A method for performing an auto-zero function in a flash analog to digital converter (“ADC”), the ADC including a reference voltage circuit, providing a plurality of evenly spaced analog...
6420982 Multi-stage lookup for translating between signals of different bit lengths  
A method and apparatus is provided for translating an L-bit put signal to a W-bit output signal such as a virtual network identification signal to an internal virtual network signal. The...
6417794 System and apparatus for digitally calibrating capacitors in an analog-to-digital converter using successive approximation  
A digital calibration system for an analog-to-digital converter system includes a computational system receiving digital bits from an analog-to-digital converter representing selection of elements...
6414612 Enhanced bandwidth digitizer using multiple analog-to digital converters and self calibration  
Systems and methods for digitizing broadband signals using multiple analog-to-digital converters (ADCs) and a calibration system for adjusting the phase and bias of the sampled signal such that the...
6411232 Method and system for determining an element conversion characteristic contemporaneous with converting and input signal in a signal converter  
A converter continuously converts an input signal ( 110 ) to an output signal ( 112 ) even during correction and compensation. A primary converter ( 124 ) converts the signal along a forward...
6407686 Waveform measuring apparatus  
A reference signal generation portion generates a reference signal independently of a repetition cycle of a signal under test. A frequency measuring portion measures a repetition frequency of the...
6407685 Full scale calibration of analog-to-digital conversion  
Methods and arrangements enable ADCs to be calibrated from reference signals with unknown parameters and/or with amplitudes that exceed the dynamic range of the ADCs. A given analog reference...
6404375 System and method of selecting and using bit testing sequences during successive approximation for calibrating an analog-to-digital converter  
A digital calibration system for an analog-to-digital converter system includes a computational system receiving digital bits from an analog-to-digital converter representing selection of elements...
6396426 Embedded mechanism offering real-time self failure detection for an analog to digital converter  
This invention describes a real-time failure detection system for the inputs of an analog-to-digital converter. A novel mechanism is proposed that provides recognition of an ADC input pin failure...
6396430 Pre-amplifier design for high-speed analog-to-digital converters  
The present invention overcomes the gate leakage drawback existing in advanced CMOS technologies to achieve extremely high-speed analog-to-digital conversion. The circuit and method employ an input...
RE37716 High-speed, low power, medium resolution analog-to-digital converter and method of stabilization  
A full flash analog to digital converter operates on an input voltage with a track/hold circuit coupled to a reference input of each of multiple comparators. Particular track/hold circuits are...
6392574 System and method for exponential digital to analog conversion  
The present invention relates to digital to analog conversion. According to an embodiment of the present invention, an exponential transfer characteristic may be produced by adding a fraction of...
6388449 Circuit and method for auto-calibration of an active load  
This invention includes an auto-calibration circuit for eliminating errors due to resistor tolerances in measurement circuits. In many instances, an analog to digital (A/D) converter is called upon...
6388594 Method of calibrating analog and digital converters  
In one aspect, the present invention is directed to a converter for converting a signal from a first format to a second format. The converter includes a decomposition section, a converter array...
6384754 Decoder testing apparatus and methods that simultaneously apply the same multibit input data to multiple decoders  
A decoding system includes a plurality of decoders, a respective one of which is responsive to respective multibit input data, to decode the respective multibit input data and produce a respective...
6384757 Method of calibrating an analog-to-digital converter, and a calibration equipment  
A calibration equipment for calibrating an analog-to-digital converter, which calibration equipment comprises means for supplying control codes to the analog-to-digital converter, whereupon a...
6384756 High-speed waveform digitizer with a phase correcting means and a method therefor  
A digitizer for converting an analog signal output from a semiconductor device to a digital signal, includes: N Analog-to-Digital converters (ADC's) ( 31, 32 ), which sequentially convert the...
6384755 Method and apparatus for analog to digital conversion using an impedance device as an identifier  
An analog information storage arrangement includes an impedance device, operatively connected to a module, for providing an impedance value corresponding to encoded information. A decoding device...
6384760 Analog-to-digital converter  
A multislope, continuously integrating analog-to-digital converter includes a first switch coupled to a first reference voltage, a second switch coupled to a second reference voltage, a third...
6384753 High density analog interface  
An interface module includes a high density analog interface (HAI) for electrical interconnection between a programmable logic controller (PLC) and an analog to digital converter (ADC) or a digital...
6380878 Digital-to-analog conversion circuit  
The present invention refers to a digital to analog conversion circuit able to transform an input digital signal having n bit in a signal having a thermometric code and to convert it in an analog...
6377195 Offset compensation in parallel analogue-digital converters  
The present invention relates to a method of offset compensating a parallel analogue-digital converter that includes at least two channels ( 35 ), where the analogue to digital conversion takes...
Matches 551 - 600 out of 1003 < 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 >