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9041571 Flexible ADC calibration technique using ADC capture memory  
Systems and methods are provided for calibrating an analog to digital converter (ADC) using one or more feedback mechanisms. In an embodiment, a capture memory module captures a portion of ADC...
9041569 Method and apparatus for calibration of successive approximation register analog-to-digital converters  
A successive approximation register (SAR) ADC includes an SAR comparator circuit including first and second inputs, a control input, and first and second outputs. The SAR comparator circuit...
9041572 Testing a digital-to-analog converter  
Testing a digital-to-analog converter (DAC), where the test is carried out iteratively for a plurality of digital test signal values, includes: providing the digital test signal to a DAC under...
9041570 Analog-to-digital converter and analog-to-digital conversion method  
An analog-to-digital converter according to the present invention includes first and second analog-to-digital conversion cells (11, 12), control means (10) for, when a mode specifying signal MD...
9041565 NRZ signal amplifying device and method, and error rate measurement device and method  
To set an optimum offset voltage and detect an NRZ signal with a very small amplitude. An NRZ signal amplifying device 2 includes: input-side voltage detection means 13 for detecting a high-level...
9030340 N-path interleaving analog-to-digital converter (ADC) with background calibration  
A system and method are provided of performing background corrections for an interleaving analog-to-digital converter (ADC). An analog input signal s1(t) is accepted having a first frequency f1...
9030346 Method and apparatus for self-test of successive approximation register (SAR) A/D converter  
A single-ended SAR ADC includes an additional capacitor, a self-test engine, and independent control of sample and hold conditions, which allows for quick and accurate testing of the ADC.
9030341 Compensation for lane imbalance in a multi-lane analog-to-digital converter (ADC)  
Various multi-lane ADCs are disclosed that substantially compensate for impairments present within various signals that result from various impairments, such as phase offset, amplitude offset,...
RE45493 Analog to digital conversion for a CMOS imager  
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...
9019140 System and method for analog to digital (A/D) conversion  
In one embodiment, a method for converting an analog input value to a digital output value is disclosed. A successive approximation is performed. The analog input is quantized to a first quantized...
9013338 Method, system and apparatus for dual mode operation of a converter  
Methods, systems and apparatuses for operating a converter or other circuits are disclosed. More particularly, in one embodiment a converter or other circuit can be operated in two modes which may...
9013340 Protection circuit for analog-to-digital converter, digital power supply, digital signal processing method, processing module, and circuit protection method  
A protection circuit includes: a first gain module, configured to receive a first input signal, scale the first input signal according to a first scaling factor, to obtain a first analog signal,...
9007242 Self-calibrated delta-sigma modulator and method thereof  
A delta-sigma modulator and corresponding method are disclosed. In one implementation, the delta-sigma modulator includes a multiplexer for receiving an analog input signal and a common mode...
9007253 Successive-approximation-register analog-to-digital converter and method thereof  
A main ADC (analog-to-digital converter) for converting an analog input signal into a digital data, and an auxiliary ADC for converting the same analog input signal into an auxiliary digital data,...
9007251 Apparatus and method for converting an analog time domain signal into a digital frequency domain signal, and apparatus and method for converting an analog time domain signal into a digital time domain signal  
An apparatus for converting an analog signal into a digital signal includes: two identical analog-to-digital-converters converting the analog signal into first and second digital time domain...
9007245 Semiconductor device having Analog-to-Digital Converter with gain-dependent dithering and communication apparatus  
A semiconductor communication device reduces influence of noise that is produced by applying a dither signal. The semiconductor communication device includes a Delta-Sigma analog-to-digital...
9000960 High-order and nested redundancies in time-interleaved ADCs  
Examples are provided for time-interleaved analog-to-digital conversion with redundancy. The redundancy may include high-order and nested redundancies. An apparatus may include multiple...
8994572 Analog-digital converter and method for converting analog signal into digital signal  
The objective of the invention is to provide an A/D converter that exhibits fewer malfunctions due to variations in manufacturing. An A/D converter (1) of the invention, which is a cyclic type of...
8988263 Successive approximation register (SAR) analog-to-digital converter (ADC) having optimized filter  
A system such as a mechanically tuned radio can have a signal path to receive and process an incoming radio frequency (RF) signal and to provide the processed signal to a first analog-to-digital...
8988268 Analog-digital converter and analog-digital conversion method  
According to the present invention, a successive approximation type analog-digital converter includes: a comparator outputting a result of comparing an analog signal and a reference voltage; a...
8981972 Background calibration of ADC reference voltage due to input signal dependency  
Embodiments of the present invention may provide an analog-to-digital converter (ADC) system. The ADC system may include an analog circuit to receive an input signal and a reference voltage, and...
8983000 Receiver circuit and method for operating a receiver circuit  
A receiver circuit includes a unit configured to determine filter coefficients based on a sampling time error of a received signal and a phase error of the received signal, as well as a filter...
8981973 Successive-approximation-register (SAR) analog-to-digital converter (ADC) attenuation capacitor calibration method and apparatus  
A fixed capacitor is coupled between a top plate of an attenuation capacitor and a variable voltage reference. The error in the attenuation capacitor may be calibrated out with the variable...
8981974 Time-to-digital converter and control method  
A first switching unit configured to switch a first state for inputting a first clock signal input from a first input terminal, and a second state for inputting an output signal of a second delay...
8981984 Asynchronous to synchronous sampling using an augmented least squares solver  
A method, comprising: receiving a plurality of 2-tuples of asynchronously sampled inputs at an asynchronous to synchronous reconstructor; performing a coarse asynchronous to synchronous conversion...
8981983 A/D conversion circuit, solid-state image sensor, and camera system  
An A/D conversion circuit in which a counter is made to be capable of performing counting at both edges of a clock, up/down count values can be switched while the up/down count values are held,...
8970758 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...
8970408 Built-in-self-test for an analog-to-digital converter  
A semiconductor chip with a built-in-self-test circuit including a first analog-to-digital converter (ADC) configured to convert an analog input voltage signal received at its input into a digital...
8963763 Configuring an analog-digital converter  
A method for operating an analog-digital converter including a number of charging units, each comprising a switchable capacitor and an associated reference potential source, includes evaluating a...
8963754 Circuit for digitizing a sum of signals  
A circuit for digitizing a sum of a first input signal and a plurality of second input signals has a passive adder that sums the second input signals and outputs a summation signal and a multi-bit...
8963750 Time-to-digital conversion with analog dithering  
There is described a time-to-digital conversion scheme using an arrangement of delay elements based Time-to-Digital Converter, TDC (20), wherein dithering is built in the digital domain and...
8957798 Artifact-corrected time-interleaved ADC  
An artifact-corrected time-interleaved analog-to-digital converter (ADC) for communications signals offers a significant increase in the available sample rate of ADCs by correcting timing and gain...
8957796 System clock jitter correction  
A system and method are provided for frequency multiplication jitter correction. The method accepts an analog reference signal having a first frequency, and using the analog reference signal,...
8957805 Balanced signal processing circuit and analog-digital conversion circuit  
A balanced signal processing circuit includes: a comparator; a first capacitor having a first end connected to a non-inverting input terminal of the comparator; a second capacitor having a first...
8957794 A/D converter and method for calibrating the same  
An ADC includes sampling means for sampling an input voltage signal, comparator(s) for receiving the sampled signal, and a DAC including circuitry for generating a search signal approximating the...
8957795 Analog-to-digital conversion device  
An analog-to-digital conversion device includes: an analog-to-digital converter that receives an analog voltage and converts the analog voltage into a digital value to output the converted digital...
8957804 Successive approximation A/D converter  
The successive approximation A/D converter includes: switch groups 105—1 to 105—x each of which is connected to the other end of each corresponding capacitor of capacitors 106—1 to 106—x to...
8952835 Background calibration of aperture center errors in analog to digital converters  
A method of background calibration of aperture center errors in a data communication system is provided. In an implementation, in response to detection of a low sampler output (“0”) in between two...
8952836 Pipeline analog-to-digital converter  
A pipeline analog-to-digital converter is disclosed which includes at least one periodic unit consisting of two adjacent stages that jointly use two capacitor networks of the same structure. Each...
8947284 AD converter and AD conversion method  
An A/D converter includes a plurality of AD converting sections that sequentially operate at predetermined intervals. The AD converting section has an ADC that converts an analog signal into a...
8947281 Apparatus and methods for actively terminated digital-to-analog conversion  
Apparatus and methods for digital-to-analog conversion are disclosed. In one embodiment, an electronic system includes a bias circuit and a digital-to-analog converter (DAC) including an input...
8947276 System and methodology for analog-to-digital converter linearity testing  
A method for testing an analog-to-digital converter is disclosed. In an implementation, the method may include providing input data to analog-to-digital converter circuitry. The analog-to-digital...
8947280 Analogue-to-digital converter  
An integrated-circuit, continuous-time, sigma-delta analog-to-digital converter has a single-ended analog input, a converter reference input, and a ground connection. The converter has a...
8947288 Analog-digital converter  
A differential analog-digital converter is provided. The converter comprises a decision unit for evaluating a potential difference between two input signal lines, a number of charging units for...
8947290 Successive approximation AD converter  
A higher-order DAC and a lower-order DAC each have a plurality of capacitive elements having capacitance values weighted with a binary ratio and are configured so that a first terminal of each of...
8947285 ADC with noise-shaping SAR  
Representative implementations of devices and techniques provide analog to digital conversion of analog inputs. A multistage comparator using a feed-forward technique can provide noise shaping of...
8947275 Method and apparatus for calibrating digital background through capacitor division and swapping for reducing capacitor mismatch effect of analog-to-digital converter  
A high-quality Analog to Digital Converter (ADC) is used to calibrate a difference attributable to a capacitor mismatch in a Digital to Analog Converter (DAC). The present invention is...
8947286 Analog/digital converter  
An analog/digital converter includes: a first analog/digital conversion unit that performs digital conversion on received first analog input voltage in a first time period; a second analog/digital...
8941518 Methods and apparatus for calibrating pipeline analog-to-digital converters having multiple channels  
Methods and apparatus are provided for calibrating stages in pipeline analog-to-digital converters (ADCs) having multiple channels.
RE45343 Calibration of offset gain and phase errors in M-channel time-interleaved analog-to-digital converters  
Techniques for correcting component mismatches in an M-channel time-interleaved Analog to Digital Converter (ADC). In order to obtain an error measure for offset, gain or phase, errors, outputs...