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7741981 Dual-use comparator/op amp for use as both a successive-approximation ADC and DAC  
A re-configurable circuit acts as an Analog-to-Digital Converter (ADC) and as a digital-to-analog converter (DAC). An array of binary-weighted capacitors stores an analog input. Switches connect...
7737872 DAC module and applications thereof  
A digital to analog conversion (DAC) module includes a digital to analog converter, a sample and hold circuit, and a switch module. The digital to analog converter is coupled to convert a digital...
7733256 Analog signal generator  
The present invention provides an analog signal generator capable of simultaneously improving both items of the influence of noise on a peripheral circuit and the settling time for a desired...
7733257 Digital-to-analog converter having efficient switch configuration  
A DAC includes a gamma voltage generator for generating a plurality of gamma voltages, and a decoder for receiving an M-bit digital value for selecting one of the gamma voltages, wherein the...
7728750 Display panel driver  
A display panel driver including a binary-weighted current-type D/A converter and a source follower with current mirror is provided. The binary-weighted current-type D/A converter receives n input...
7729300 Class-B transmitter and replica transmitter for gigabit ethernet applications  
A method and apparatus for a Gigabit Ethernet transceiver that has a Class-B amplifier in a main transmitter for higher efficiency and power handling capabilities. The output current of the main...
7728749 Multi-mode digital-to-analog converter  
Various apparatuses, methods and systems for a multi-mode DAC with selectable output range, granularity and offset and controlled slew rate are disclosed herein. For example, some embodiments of...
7724165 Audio codec and built-in self test method for the same  
An audio codec and a BIST method adapted for the audio codec are provided. The BIST method includes the following steps. A first channel digital-to-analog converter (DAC) of the audio codec...
7724171 Digital to analog converter and display driving system thereof  
A digital to analog converter of the source driver includes a gamma voltage generator and a data decoder. The gamma voltage generator receives a gamma code to generate an analog gamma voltage. The...
7719453 Analogue-digital converter using Josephson DAC and method thereof  
The present invention relates to an analog-to-digital converter (ADC) and an analog-to-digital conversion method employing a Josephson digital-to-analog converter (DAC) into an extremely accurate...
7719454 Logical current division multiplexing for encoding multiple digital signals  
A method and a system are disclosed for transmitting an N-bit digital signal at a source. The N-bit digital signal representing a binary value is used to modulate an electrical current by using N...
7719455 Dynamic element-matching method, multi-bit DAC using the method, and delta-sigma modulator and delta-sigma DAC including the multi-bit DAC  
Provided are a dynamic element-matching method, a multi-bit Digital-to-Analog Converter (DAC), and a delta-sigma modulator with the multi-bit DAC and delta-sigma DAC with the multi-bit DAC. The...
7714755 Dynamic bias control circuit and related apparatus for digital-to-analog converters  
A dynamic bias control circuit includes a current source, a first switch, a differential amplifier, and a third switch. The current source outputs a first current. The first switch is coupled to...
7714758 Digital-to-analog converter and method thereof  
An integrated circuit may include an operation amplifier, a first capacitor, a plurality of second capacitors, and/or a switching circuit. The operational amplifier may have a first input...
7714750 Audio processing circuit and method  
An audio processing circuit includes a clock synthesizer, a clock divider, a digital interpolator module, a sampling rate converter and a digital-to-analog converter. The clock synthesizer...
7714756 Digital-to-analog converter  
The present invention discloses a digital-to-analog converter (DAC), including a bias voltage generating unit, a digital-to-analog converting stage, and an operating amplifier. The bias voltage...
7714759 Low power linear interpolation digital-to-analog conversion  
A resistor network digital-to-analog converter (DAC) subdivides each sampling clock cycle of the DAC into a number of phases. For at least one bit input of the DAC associated with a desired input...
7710302 Design structures and systems involving digital to analog converters  
A digital to analog converter (DAC) system comprising, a first segment, wherein a segment comprises, a first path including an array of resistors connected in series between a first reference...
7710301 Digital/analog converter and transmitter for complex signals  
According to an embodiment of the invention, there is provided a digital/analog converter includes: a decoder that converts a (n−1)-phase input digital signal to a n-phase output digital signal;...
7710300 Segmented data shuffler apparatus for a digital to analog converter (DAC)  
A sigma-delta digital to analog converter (DAC) module converts the digital input signal to the analog output signal through segmentation, including a primary and a secondary sigma-delta...
7711974 SCLK auto-detection and generation in various serial port modes  
An apparatus and a method for clock mode determination utilizing SCLK auto-detection and generation circuitry at a serial port which has a reduced number of pin-count by eliminating the need for...
7705758 Method and apparatus for digital to analog conversion  
A Delta-Sigma DAC and a digital to analog conversion method are provided. A FIR filter receives a shaped digital signal to generate a first current on a first output node, and a second current on...
7705759 Generation of a digital controlled precise analog sine function  
Disclosed are techniques for generating a precisely controlled analog signal. In one described implementation, a semiconductor circuit is mounted on a circuit board having a power and a ground...
7701373 Current steering DAC  
A multi-channel current steering DAC (Digital-to-Analog Converter), for example, a 2-channel current steering DAC, includes a plurality of current sources I1, I2, . . . corresponding to the number...
7702941 Universal adaptive synchronization scheme for distributed audio-video capture on heterogeneous computing platforms  
According to one embodiment of the present invention, a novel apparatus is disclosed. The apparatus includes an analog to digital converter to receive a predefined synchronization signal and a...
7701370 Current output circuit with bias control and method thereof  
A current output circuit with bias control and a method thereof are provided. The current output circuit includes a current mirror circuit comprising a first transistor and a second transistor...
7696914 Sigma delta modulator and related method thereof  
A sigma-delta modulator includes a loop filter, a single bit quantizer, a single bit DAC, an adder. The loop filter is for filtering a summed signal to generate a filtered signal. The single bit...
7692569 Methods and apparatus for rotating a thermometer code  
In one aspect, an apparatus for data conversion is provided. The apparatus comprises a plurality of inputs whose values together define a thermometer code to be converted to an analog output...
7688236 Integrated circuit comprising a plurality of digital-to-analog converters, sigma-delta modulator circuit, and method of calibrating a plurality of multibit digital-to-analog converters  
In an integrated circuit including a first multibit digital-to-analog converter and a second multibit digital-to-analog converter, a calibration circuit is provided which is shared between the...
7690024 Authenticated device and individual authentication system  
It is made possible to prevent “spoofing” and incur no additional management cost as effectively as possible. An authenticated device includes: at least one authenticated element that generates an...
7688240 Method and apparatus for calibrating an RDAC for end-to-end tolerance correction of output resistance  
A system and method for calibrating an RDAC to obtain an expected resistance are disclosed. In one embodiment, a method of obtaining an expected resistance from an RDAC circuit includes receiving...
7683871 Display control circuit  
A display control device of the present invention includes a gamma circuit producing and outputting a gray scale voltage and a selection drive circuit selecting the gray scale voltage on the basis...
7683816 System for displaying images  
A system for displaying images is provided. A capacitor type digital-to-analog converter is coupled between a first node and a second node and generates a first analog signal according to a...
7683813 Digital-to-analog converter carrying out calibration operation for current source cells  
A current cell matrix type of digital-to-analog (D/A) converter to prevent deterioration of a.c. characteristics on a current path for digital-to-analog conversion includes a array of current...
7679541 Circuit and method for improving mismatches between signal converters  
A circuit and method for improving mismatches between signal converters includes at least two conversion units, a clock generator and a reference voltage generator. The conversion units share the...
7679539 Randomized thermometer-coding digital-to-analog converter and method therefor  
A randomized thermometer-coding digital-to-analog converter (DAC) for the reduction of harmonic distortion due to non-ideal circuit mismatch is presented. The present invention introduces a new...
7679538 Current-steering type digital-to-analog converter  
A current-steering type digital-to-analog converter (DAC) is disclosed. The DAC includes a first sub-DAC, a second sub-DAC and a controlling device. Both the first sub-DAC and the second sub-DAC...
7679537 Precision microcontroller-based pulse width modulation digital-to-analog conversion circuit and method  
A precision digital to analog conversion circuit and method are provided. A regulated direct current (DC) voltage having a DC voltage magnitude is supplied to a device, such as a processor. The...
7675450 Digital-to-analog converter (DAC) for high frequency and high resolution environments  
A digital-to-analog converter (DAC) configured to operate in high frequency and/or high resolution environments. The DAC has a segmented architecture comprising one or more least significant bit...
7675449 Current steering digital-analog converter particularly insensitive to packaging stresses  
A current steering digital-analog converter for converting a digital code into an analog signal, the converter including a substrate of semiconductor material, an array of current generators...
7675448 Continuous-time sigma-delta modulator using dynamic element matching having low latency and dynamic element matching method thereof  
In a continuous-time sigma-delta modulator, by using dynamic element matching (DEM) with respect to comparators of a quantizer, or by generating a plurality of candidate DEM results in advance for...
7671773 Jitter insensitive single bit digital to analog converter  
Systems and methods for a jitter insensitive 1-bit digital to analog converter (DAC) are described. The jitter insensitive 1-bit DAC employed in the feedback loop of a delta sigma analog to...
7671776 Input sampling network that avoids undesired transient voltages  
Circuits, methods, and apparatus that provide sampling networks that avoid undesired transient voltages. One example provides a sampling network that includes a switch such that charge is...
7671772 Method and apparatus for producing a linearized amplified continuous wave (CW) signal  
In one embodiment, at least one parameter set for at least one harmonic of a continuous wave (CW) signal is digitally generated in response to a parameter set for the CW signal. In response to the...
7671768 Digital-to-analogue converter system with increased performance  
The invention relates to an N-bit digital-to-analogue converter (DAC) system, comprising—a DAC unit comprising an N-bit master DAC and a slave DAC, yielding a master DAC unit output signal and a...
7668848 Method and system for selectively decoding audio files in an electronic device  
A method and system for operating an electronic device (102) that is operably coupled to an audio output device (104) is provided. The method includes receiving an encoded audio file at the...
7663524 Multi-channel display driver circuit incorporating modified D/A converters  
A multi-channel display driver circuit incorporating modified D/A converters has a plurality of digital comparators connected to a number generator. Each digital comparator has an output, a...
7663522 Performance of A/D converter and receiver  
A delta-sigma A/D converter includes a D/A converter realized with a mixed-mode comb filter connected in a feedback loop from the output of the A/D converter to the input of the A/D converter. The...
7663442 Data receiver including a transconductance amplifier  
According to one embodiment, a system, apparatus, and method for receiving high-speed signals using a receiver with a transconductance amplifier is presented. The apparatus comprises a...
7663525 Digital to analog converter and conversion method  
A digital to analog converter including a first capacitor, a second capacitor, an operational amplifier, and a switch is disclosed. During a first period, the first capacitor stores a first...