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7663523 System unit element selection  
The management of unit element selections in a system that includes multiple unit elements. The system includes an element selection component that is configured so that each of the multiple...
7659843 Digitizing an analog signal, and reconstituting an analog signal from a digitized version of the analog signal  
An embodiment of an audio-signal digitizer includes a modulator and a converter. The modulator is operable to receive an analog audio signal, and is operable to angle modulate a carrier signal...
7659841 Quadratic and cubic compensation of sigma-delta D/A and A/D converters  
A circuit and method for compensating sigma-delta modulators in A/D and D/A converters is disclosed. Circuits according to the invention use a low-resolution Sigma-Delta encoded version of the...
7656333 Digital-to-analog converter of the finite impulse response type  
In a signal processing arrangement, a digital-to-analog converter (DAC1) of the finite impulse response type converts a serial bitstream (BSL) into an analog output signal (AL). The...
7656332 Method and apparatus for a multi-mode multi-rate telemetry transmitter  
A method and apparatus for a multi-mode and multi-rate telemetry transmitter includes a digital baseband lineup, a digital-to-analog converter (“DAC”), and an analog reconstruction filter. The...
7656331 System on a chip with multiple independent outputs  
An audio output circuit includes a DAC module, a line out circuit, and a headphone amplifier circuit. The digital to analog conversion (DAC) module is coupled to convert an audio component of...
7652605 Semiconductor device and audio processor chip  
An audio processor chip includes a DSP for decoding audio data, a first DAC for performing a D/A conversion to the digital data obtained from the DSP, a PLL circuit for generating a clock signal...
7652607 Digital to analogue converters  
In a digital to analogue converter, a plurality of digital inputs are used to select one of first and second binary voltage levels as binary inputs (10) to the converter. A capacitor circuit (C,...
7652606 D/A converter  
A digital-analog converter including a first selection circuit of switch elements, which are coupled to each other and to a high potential power supply, and a second selection circuit of switch...
7646321 Digital/analog converter  
Provided is a digital/analog converter including a voltage dividing unit that includes a plurality of voltage dividing elements and divides a reference voltage by voltage division; a first decoder...
7646322 Folded R-2R ladder current-steering digital to analog converter  
A folded R-2R ladder current-steering digital-to-analog converter is disclosed. In the folded R-2R ladder current-steering digital-to-analog converter, each node in the R-2R ladder is electrically...
7642946 Successive approximation analog to digital converter  
A system and method are provided allowing for successive approximation analog to digital conversion. A first differential voltage is sampled and held during a first cycle. The first differential...
7642942 Systems and methods for synthesis of a signal  
Systems and methods synthesize a signal from the odd harmonic frequency components of an input signal. An exemplary embodiment synthesizes a first signal with a digital to analog converter (DAC),...
7642941 Gamma reference voltages generating circuit  
A gamma reference voltages generating circuit is disclosed in the present invention. The gamma reference voltages generating circuit comprises a voltage provider, a plurality of first...
7639165 Calibrating replica digital-to-analog converters  
A system includes a first digital-to-analog converter (DAC), a replica DAC, a control module, and a calibrating DAC. The first DAC receives a first input and generates a first analog output based...
7639166 D/A converter circuit  
A multi-bit D/A converter circuit that prevents a bit inversion and requires a reduced layout area is offered. A first switching circuit is provided in order to select a pair of analog voltages...
7639757 Pulse modulator and pulse modulation method  
A pulse modulator has a subtraction stage that produces a control error signal from the difference between a complex input signal and a feedback signal. A signal conversion stage converts the...
7640281 Digital signal control using first order holds  
A method is provided to reduce delay in signal processing of a digital control system. The method includes receiving outputs from a digital controller at a first frequency. A pre-load data value...
7639164 Output data correction device for analog-to-digital conversion circuit and analog-to-digital converted output data correction method  
An output data correction device is provided for an A/D conversion circuit that achieves high precision over input voltage domains. An estimated maximum input ranging from 0 V to 5 V is divided...
7639168 Systems and methods for switch resistance control in digital to analog converters (DACs)  
A switch signal generator circuit that may form part of a digital to analog converter is provided. The switch signal generator circuit may include a first switch that controls a high reference...
7633417 Device and method for enhancing the human perceptual quality of a multimedia signal  
A device is described herein that performs a digital-to-analog conversion on a digital multimedia signal in a manner that enhances the human perceptual quality of the resulting analog multimedia...
7629910 Methods and apparatus to control current steering digital to analog converters  
Methods and apparatus to control current steering digital to analog converters are described herein. In one example, a digital to analog converter includes a first unit cell including a positive...
7629906 Circuit and method for calibrating direct current offset  
A circuit and a method for calibrating the direct-current offset in the signal output from a signal processing unit are provided. The calibration circuit includes a 1-bit quantizer, a control...
7626528 Digital to analog converter with high driving capability  
A digital-to-analog converter with high driving capability includes a voltage generator for generating voltages, a voltage division circuit coupled to the voltage generator for outputting a...
7623055 Weight level generating method and device utilizing plural weights at different time rates  
A weight level generator is provided. Weight level generator W has plural weight generators 5-1-5-j. At least one of said plural weight generators is used at at least two different time rates....
7619553 Digital-to-analogue converter  
A digital-to-analogue conversion arrangement is disclosed which includes first and second groups of the same number of bi-directional bufferless digital-to-analogue converters. The output of at...
RE40971 Direct drive programmable high speed power digital-to-analog converter  
A current source is provided according to the present invention. The current source includes N current sources configured in a parallel arrangement, wherein N is at least two. Each of the N...
7619552 Low distortion current switch  
A system and method is provided for code independent switching in a digital-to-analog converter (DAC). A synchronous digital circuit is triggered by a synchronizing clocking signal and develops a...
7616141 Digital-to-analog converter  
Embodiments of a digital-to-analog converter are disclosed.
7609190 Device and method for testing of digital-to-analog converter  
A current-steering digital-to-analog converter (DAC) is tested using a test component having a relaxation oscillator with an oscillation frequency based on the output current of the DAC. A series...
7609184 D-A convert apparatus and A-D convert apparatus  
Provided is a D-A conversion apparatus that outputs an analog output voltage according to digital input data, which includes a capacitance array main D-A converter that supplies a main voltage...
7605734 Digital to analog converter with reduced ringing  
Binary indications are converted to an analog representation with significant reduction in ringing at the transitions between successive binary indications and in the period during each binary...
7605735 Digital-to-analog converter with R-2R ladder network by polarity control  
A digital-to-analog converter (DAC) includes an R-2R ladder network, switches, and an operation amplifier (OP) with a feedback resistance, for providing an analog voltage in a positive polarity...
7602326 Digital-to-analog converter having resistor string with ranges to reduce circuit elements  
An analog-to-digital converter has a resistor string that generates a series of voltages. An upper selector selects voltages at the upper end of the series. A lower selector selects voltages at...
7602320 Systems and methods for companding ADC-DSP-DAC combinations  
Systems and methods for resizing a signal for use with a fixed-point DSP are provided. More specifically, a process called companding is used in conjunction with fixed-point devices to resize a...
7602327 Digitally controllable on-chip resistors and methods  
A digitally controllable resistor includes a substrate and at least one digitally controllable resistance stage formed on the substrate. Each of the stage(s) can include a first resistor connected...
7598894 Source driver and digital-to-analog converter thereof  
A source driver and a digital-to-analog converter (DAC) thereof are provided. The DAC converts an input data into an analog voltage. The DAC includes a reference voltage generation unit, a switch...
7598893 Digital-to-analog converter for simultaneous conversion of a plurality of digital signals  
A digital-to-analog converter has a reference value source, a reference value divider arrangement with a tap, a first switch arrangement which is designed to produce an electrical connection...
7595747 Digital-to-analog converter, and method thereof  
A digital-to-analog converter (DAC) and a digital-to-analog converting method are provided. The DAC includes a first capacitor, an operation amplifier having a first input terminal connected to...
7595746 Interpolation digital-to-analog converter  
A digital-to-analog converter (DAC) includes coarse interpolation DACs configured to produce a current range based on an input digital signal, and fine interpolation DACs configured to produce an...
7592932 Method and device for interpolating or decimating a signal  
A method and a device for interpolating or decimating a signal is provided, the signal being processed by a plurality of signal processing means connected in series, which at least comprise means...
7592939 Digital domain to pulse domain time encoder  
A system and method for making a digital encoder. The digital encoder has a digital-to-analog converter having multiple inputs and an output. The encoder also has an integrator having an input and...
7589655 Method and system for a control scheme on power and common-mode voltage reduction for a transmitter  
Provided is a method and system for controlling current characteristics in a transceiver having a transmitter. The method includes identifying a phase control signal from an adjacent current cell...
7589650 Analog-to-digital converter with calibration  
An analog-to-digital converter with calibration is provided. The converter includes at least one conversion unit. The conversion unit includes a comparator, a control unit, a count unit, and a...
7589654 Digital-to-analog converting circuit and apparatus for on-die termination using the same  
A digital-to-analogue converting circuit includes a driver leg having a plurality of resistance elements between a power supply voltage terminal and a ground voltage terminal, wherein at least one...
7589653 Output architecture for LCD panel column driver  
A digital to analog converter (DAC) circuit operates over an upper range and a lower range. An upper voltage node is designated AVDD; a middle voltage node is designated HVDD; and a lower voltage...
7589652 Read and write interface communications protocol for digital-to-analog signal converter with non-volatile memory  
A mixed signal device, e.g., digital-to-analog converter (DAC) device has a serial interface communication protocol that accesses volatile and/or nonvolatile memory and allows a preprogrammed...
7586429 Scrambling system for high resolution ditigal-to-analog converter  
A scrambling system for a digital-to-analog converter (DAC) includes a DAC that receives a digital input word and a scrambling module that randomly selects at least one of a plurality of current...
7583210 Differential offset correction circuit  
An analog-to-digital converter conventionally performing a detection of a differential offset is replaced by a comparator 20. A reference voltage is input to a terminal on one side of the...
7583217 Switched capacitor type D/A converter, and drive circuit for liquid crystal display  
A D/A converter of switched capacitor type capable of shortening the time for D/A conversion process without increasing power consumption is provided. The D/A converter comprises capacitors Cx and...