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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...
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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...
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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...
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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 current...
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7616141 |
Digital-to-analog converter
Embodiments of a digital-to-analog converter are disclosed.
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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...
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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...
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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 and...
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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...
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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...
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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 the...
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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...
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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...
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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...
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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 the...
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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...
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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...
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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...
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7589659 |
Successive approximation analog to digital converter
A successive approximation analog to digital converter comprising a plurality of capacitors which during a successive approximation conversion are selectively connectable to a first reference or a...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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7583216 |
Adjustable DAC and applications thereof
A digital to analog converter (DAC) includes at least one digital to analog conversion module and a gated termination. The at least one digital to analog conversion module is coupled to convert at...
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7583213 |
Signal processing system capable of changing signal levels
A signal processing system for changing a level of an input signal to generate an output signal is disclosed. The signal processing system includes a shifter, a sigma-delta modulator, and a level...
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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...
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7580288 |
Multi-level voltage adjustment
An adjustable voltage supply ( 310 ) may have a plurality of levels of adjustment, such as a coarse select circuit ( 471 ) and a fine select circuit ( 473 ), to generate an adjustable voltage (e.g....
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7579974 |
Digitizer for a digital receiver system
A digitizer for a digital receiver system includes an input terminal to receive a modulated analog input voltage signal, and an output terminal to provide an output voltage signal being a digital...
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7579972 |
Risa controller for an RF integrated circuit (RFIC) having improved execution speed
An RFIC controller configured for executing multiple tasks. A serial interface is included having a serial bus for receiving a data stream having control bits and data bits. One or more registers...
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7579971 |
Low distortion digital to analog converter and digital signal synthesizer systems
The present invention is a digital to analog converter circuit that provides significantly lower distortion than achieved by digital to analog converter circuits having comparable speed and...
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7579969 |
Systems and methods for creating and using a conditioning signal
Systems and methods for creating and using a conditioning signal are provided. In some embodiments, systems for creating a conditioning signal providing information regarding an input signal are...
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7576675 |
Return-to-zero current-steering DAC with clock-to-output isolation
A return-to-zero current-steering DAC is presented. The presented return-to-zero technique can isolate the analog output nodes of the DAC from the coupling of the control signals of the DAC without...
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7576674 |
Digital-to-analog converter circuit, data driver, and display device using the digital-to-analog converter circuit
Disclosed is a data driver including a reference voltage generation circuit that generates and outputs a plurality of reference voltages, a decoder circuit that selects from among the reference...
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7576667 |
Hierarchied calibration circuit
A digital-to-analog converter is described. The digital-to-analog converter converts an m-bit digital signal into an analog signal using m weighted currents, such as m binary-weighted currents. A...
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7573412 |
Digital-to-analog converter (DAC)
A digital to analog converter (DAC) is provided. The DAC includes a first loop unit to receive a plurality of sources and comprising a plurality of primary winding of transistors formed at a...
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7573411 |
Digital-to-analog converter, display panel driver having the same, and digital-to-analog converting method
A digital-to-analog converter outputting an analog data voltage corresponding to n-bit data, includes a chopping amplification unit adapted to receive an upper bit voltage corresponding to upper x...
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7570242 |
Data driving apparatus in a current driving type display device
A current output device of a data driving apparatus sequentially applying data signals to data lines. The data signals correspond to analog converted output currents and the current output device...
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7570188 |
Common mode management between a current-steering DAC and transconductance filter in a transmission system
Common mode management between a DAC, such as a current-steering DAC, and a transconductance filter in a high-frequency transmission system. In one aspect of the invention, a transmission circuit...
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7567196 |
Method of controlling digital-to-analog conversion
An analog-to-digital converter having a minimal amount of circuitry for conversion of an input analog signal to a series of digital bits. A differential comparator is provided for generating...
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7567195 |
Digital-to-analog converter using selected single bit converter elements
A digital-to-analog converter having an input for receiving a digital input signal during each time period. A plurality of elements are each adapted to produce an analog output in response to an...
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7567193 |
Continuous time delta-sigma modulator and electronic circuit including the same
An electronic circuit includes a digital-to-analog converter (DAC), and an active integrator. The DAC converts a digital output of the electronic circuit to an analog signal and feeds back the...
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7564393 |
Digital to analog converter and method for digital to analog conversion
A digital to analog converter includes first and second capacitors, an operational amplifier and a switching circuit. The operational amplifier includes first and second input terminals and an...
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7564391 |
Sigma delta modulator summing input, reference voltage, and feedback
A multibit sigma delta modulator for conveting an analog input signal (Vin) into a multibit digital output signal is disclosed. In one embodiment, the multibit sigma modulator includes a first...
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7564390 |
Optical digital to analog converter
According to one embodiment of the invention, a digital to analog converter for converting a digital signal to an analog optical signal includes a light source and a plurality optical switches....
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7561089 |
Digital to analogue conversion
A method of Digital to Analogue conversion of an input signal D o for suppressing the effect of clock-jitter in a Delta-Sigma analogue to digital converter, or class D amplifier, comprises...
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7561088 |
Multi-loop data weighted averaging in a delta-sigma DAC
Methods and apparatuses enable generating an analog representation of an M-bit digital input. A DAC system receives the M-bit data word and generates a control signal to control the output elements...
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7561087 |
Integrated circuit arrangement comprising at least one digital-analogue converter
The invention relates to an integrated circuit arrangement ( 10 ) comprising at least one digital-analogue converter ( 12 ) with a multitude of current-source transistors (N 1 -N 8 ) arranged...
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