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8593316 Combined digital output system  
A combined digital output system includes two quantization modules, a common mode counter, a differential mode counter, and a summing module. The quantization modules provide two digital signals,...
8593320 Analog conversion of pulse width modulated signals  
A method of converting a periodic pulse width modulated input signal into a voltage output signal wherein the input signal is in an active state for a first portion of each of successive time...
8593314 A/D conversion circuit, integrated circuit device, electronic apparatus  
An A/D conversion circuit in which a control circuit that has a successive approximation register storing data updated by a successive approximation operation generates correction data for...
8587707 DA converter and solid-state imaging device that provides reduced power consumption  
A DA converter includes: a reference current generating circuit that generates a reference current; current sources that supply currents according to the reference current; a voltage output...
8587462 Digital-to-analog converter  
A digital-to-analog converter includes a clock driver, a first decoder, a second decoder, a current source matrix, a pseudo random mode generator and at least one multiplexer. The first decoder...
8581760 Digital to analog converter  
A digital-to-analog converter is disclosed. The converter includes a gradient correction module that generates a correction term based on a model of gradient error. The correction term is then...
8581756 Signal-characteristic determined digital-to-analog converter (DAC) filter stage configuration  
A digital signal processing circuit, such as a digital-to-analog converter (DAC) having multiple cascaded processing stages, some of which are selectably placed in a low-power non-operating state...
8581770 Zero-power sampling SAR ADC circuit and method  
A switched-capacitor circuit (10, 32 or 32A) samples a first signal (VIN+) onto a first capacitor (C1 or CIN1) by switching a top plate thereof via a summing conductor (13) to a first reference...
8581765 Low-memory-usage arbitrary waveform representation or generation  
This disclosure describes techniques and apparatuses for low-memory-usage arbitrary waveform representation or generation. These techniques and/or apparatuses enable representation and/or...
8581824 Hybrid digital to analog converter, source driver, and liquid crystal display device  
A hybrid digital to analog converter (DAC) includes a first digital to analog converting unit (DACU) and a second DAC unit. The first DAC unit provides an analog voltage corresponding to Q-bit...
8576101 Calibration of an R2R ladder based current digital-to-analog converter (DAC)  
A R2R ladder circuit implementation of a digital-to-analog convertor (DAC) may be configured to compensate for mismatch in each of a plurality of current sources in the R2R ladder circuit. The...
8576103 Rollover operative digital to analog converter (DAC)  
Rollover operative digital to analog converter (DAC). With respect to a codeword that is provided to a DAC, a processing module (e.g., a rollover processor) operates to compare the codeword to...
8576214 Display device  
A circuit that obtains a more accurate, output voltage from a plurality of input voltages is provided. A two-input single-output circuit includes a current source transistor allowing a...
8570202 Digital-to-analog converter implementing hybrid conversion architecture  
A digital-to-analog converter (DAC) implements a hybrid conversion architecture where the input digital data is oversampled and a flash converter is used to convert the M most significant bits...
8570199 Digital to analog converter circuits and methods  
The present disclosure provides for improved DAC circuits and methods. In one embodiment, a digital-to-analog converter receives a digital signal and outputs a first analog output signal...
8558727 Compensated current cell to scale switching glitches in digital to analog convertors  
Compensated current cell to scale switching glitches in digital to analog convertors. A compensated current cell is disclosed that includes first and second switching transistors configured to...
8558852 Source driver, electro-optical device, and electronic instrument  
A source driver that drives a plurality of source lines of an electro-optical device includes a grayscale voltage generation circuit that outputs first and second grayscale voltages corresponding...
8552894 Sigma-delta modulator having a feed-forward path and a hybrid portion  
A sigma-delta modulator includes a front portion and a hybrid portion to form a loop filter. The front portion includes integrator(s) and feed-forward path(s), and is arranged to provide a front...
8552898 Apparatus and method for dynamically dampening a transient step response  
A circuit has a digital to analog (DA) resistance ladder having an analog output; a capacitor coupled to the analog output; a first resistance coupled from the capacitor to ground; and a switch...
8552895 Sigma-delta modulator for reducing power consumption and suitable for high-speed operations  
Disclosed herein is a sigma-delta modulator, including an integration circuit, a first DAC unit, and a second DAC unit. The integration circuit includes first and second terminals, and integrates...
8552893 Control system using nonlinear delta-sigma modulator with switching period error compensation  
A control system provides a control signal to a nonlinear plant that generates a response signal responsive to the control signal. The control system includes a detector that detects a...
8552896 Digital to analog converter (DAC)  
A DAC for converting a sequence of digital words into a corresponding analog signal. The DAC includes: a thermometer code generator fed by the sequence of digital words for providing N parallel...
8547265 Power supply apparatus for test apparatus  
A power supply apparatus is provided for a test apparatus configured to supply a power supply signal to a DUT. An A/D converter performs analog/digital conversion of an analog observed value that...
8547268 Switched current-cell with intermediate state  
Representative implementations of devices and techniques provide digital-to-analog conversion of signals while minimizing switching related errors. Digital to analog converter (DAC) cells may be...
8542139 Current switch driving circuit and digital to analog converter  
Provided are a current switch driving circuit generating a signal for driving a current switch, and a digital-to-analog converter using the same. The current switch driving circuit includes a...
8542769 High output power digital TX  
The disclosed apparatus and corresponding method uses amplifiers and a differential combiner to control the output power of a digital-to-analog upconverter and to isolate In-phase and Quadrature...
8542773 Digital RF converter, digital RF modulator and transmitter including the same  
A digital RF converter, a digital RF modulator, and a transmitter are provided. The digital RF converter includes a delta-sigma modulated bits (DSMB) sub-block that generates a current magnitude...
8537043 Digital-to-analog converter with controlled gate voltages  
A digital-to-analog converter (DAC) includes a resistor leg that is switchably connected to a first voltage reference via an n-channel MOSFET and to a second voltage reference via a p-channel...
8537041 Interpolation-based digital pre-distortion architecture  
A non-linear amplifier is linearized using interpolation-based digital pre-distortion (DPD). In one embodiment, the digital input signal is interpolated to generate a higher-sample-rate signal...
8537040 Data converter current sources using thin-oxide core devices  
Systems and methods are disclosed for performing data conversion by matching current sources using a thin oxide device; and minimizing voltage stress on the thin oxide device during operation or...
8537045 Pre-charged capacitive digital-to-analog converter  
Embodiments of the present disclosure may provide a charge redistribution DAC with two sets of capacitors that provides a DAC output by sharing charges between a plurality of pairs of capacitors...
8537042 Multi-bit digital to analogue converter and a delta-sigma analogue to digital converter  
The present invention relates to a multi-bit digital to analogue converter (DAC) and to a delta-sigma analogue to digital converter employing such a DAC. The DAC has a multi-bit input, a plurality...
8531322 Time-to-digital converter  
Embodiments of a time-to-digital converter are provided, comprising a delay stage matrix and a measurement circuit. The delay stage matrix comprises a first and a second delay lines coupled...
8525716 Isolation circuit for a digital-to-analog converter  
An electronic circuit comprises a digital-to-analog converter (DAC) core circuit having a current source device and a digital input bit. An isolation circuit is also provided and is connected to...
8519877 Low noise and low power arrangement for playing audio signals  
A circuit for providing audio signals to a load such as a speaker is provided that uses the speaker or headphone amplifier structure as a current to voltage converter, thereby eliminating a...
8519875 System and method for background calibration of time interleaved analog to digital converters  
Various embodiments allow for background calibration of channel-to-channel mismatch errors. In certain embodiments calibration is accomplished by comparing the output of I-ADCs against the output...
8514119 High-speed voltage-level converter using capacitor  
A voltage-level convertor including a switch and a capacitor which receives an input signal of a first voltage range and generates a level-converted signal of a second voltage range. The switch...
8514110 Resolver digital converter  
This resolver digital converter 10 includes a band pass processing unit that is disposed between a conversion unit and a multiplication unit and passes only a signal of a predetermined band...
8514116 Method for improving the resolution and for correcting distortions in a sigma-delta modulator, and sigma-delta modulator implementing said method  
In a method for improving resolution and for correcting distortions for a sigma-delta modulator, a modulator converts an analog input signal into a secondary output digital signal sampled at a...
8514120 Digital-to-analog converter with a shared resistor string  
An apparatus is provided that comprises resistors, a first set of switches, and a second set of switches. The resistors are arranged in an array having columns and rows, where the number of...
8502720 Parallel digital to analog conversion with image suppression  
A digital to analog conversion apparatus includes a plurality of gain/phase adjusters configured to receive a digital signal and to output a plurality of adjusted digital input signals, a...
8502715 Signal processing system and self-calibration digital-to-analog converting method thereof  
A signal processing system including a DAC, a comparing unit, and a control unit is provided. The DAC receives a digital input and generates an output voltage. The comparing unit receives the...
8502716 Calibration for RFDAC  
Phase errors are reduced in an RFDAC. The RFDAC includes: a multi-phase radio-frequency signal generator that generates multiple radio-frequency signal pairs each having a phase difference of π; a...
8503515 High speed switch with data converter physical ports and processing unit  
An integrated circuit chip implements a high-speed switch that includes: a switch fabric; control logic that controls the transmission of digital signals through the switch fabric; a transceiver...
8503514 High speed switch with data converter physical ports  
A high-speed switch that includes a switch fabric, and both high-speed serial ports and data converter physical ports. A first set of data converter physical ports may perform analog-to-digital...
8502610 Cascaded local oscillator synthesizer  
A representative integrated circuit comprises a clock signal generator that generates a clock signal, a code pattern generator that generates digital pattern data based on the clock signal, and...
8498086 High speed digital-to-analog converter with low voltage device protection  
A digital-to-analog converter (DAC) includes a first DAC core, a second DAC core, and a butterfly switch. The first DAC core generates a first output. The second DAC core generates a second...
8493258 Digital-to-analog converter image suppression with hilbert transform  
A method and apparatus for suppressing a first replica of an image spectra and reinforcing a second replica of the image spectra are disclosed. A Hilbert transformer is applied to a first digital...
8493248 Transforming circuit and system between parallel data and serial data  
A transforming circuit between parallel data and serial data includes a current source, a clock input sub-circuit, and a parallel data input sub-circuit. The clock input sub-circuit includes a...
8493251 Self-calibrated DAC with reduced glitch mapping  
A digital-to-analog converter (DAC) is disclosed. According to some embodiments of the present disclosure, a DAC may include a plurality of current-steering elements, wherein each respective...