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US20110175876 DIGITALLY CONTROLLED VOLTAGE GENERATOR  
A digitally controlled voltage generator is disclosed for use in applications requiring fine resolution voltage control, such as generating a common voltage for a liquid crystal display. A...
US20080272947 System Clock Generator Circuit  
A system clock generator circuit for use in a D/A converter that allows the clock of any frequency to be inputted and also allows usage limiting-conditions to be simplified. A system clock...
US20080291070 DIGITAL/ANALOG CONVERTER AND TRANSMITTER  
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;...
US20120293352 POWER DIGITAL TO ANALOG CONVERTER  
A digital to analog converter having a plurality of power dividers interconnected into a binary tree configuration, each one having an input and a pair of electrically isolated outputs for...
US20120293353 OPERATIONAL AMPLIFIER  
A temperature dependence adjustable operational amplifier circuit which suppresses a change in a gain caused by a change in an input voltage is provided. In an operational amplifier including a...
US20100027711 DIGITAL LINEAR TRANSMITTER ARCHITECTURE  
A digital linear transmitter for digital to analog conversion of a radio frequency signal. The transmitter includes a delta sigma (ΔΣ) digital to analog converter (DAC) and a weighted signal...
US20140002289 MULTI-STAGE STRING DAC  
Embodiments of the present invention may provide string DAC architecture with multiple stages for efficient resolution extension. A first stage may include an impedance string (e.g., resistor...
US20130235953 Wideband Power Efficient High Transmission Power Radio Frequency (RF) Transmitter  
Embodiments provide transmitter topologies that improve the power efficiency and bandwidth of RF transmitters for high transmission power applications. In an embodiment, the common-emitter/source...
US20140266830 TECHNIQUES TO REDUCE HARMONIC DISTORTIONS OF IMPEDANCE ATTENUATORS FOR LOW-POWER WIDEBAND HIGH-RESOLUTION DACS  
A digital-to-analog converter (DAC) includes, in part, a multitude of input stages that supply currents to a pair of current summing nodes in response to a digital signal, and an impedance...
US20090195425 Method and device for digital-to-analog conversion with filtering  
The invention relates to a device and a method for converting a digital signal having a plurality of data-bits into a filtered analog signal. A device according to the invention includes a delay...
US20110175762 SECOND ORDER NOISE COUPLING WITH ZERO OPTIMIZATION MODULATOR AND METHOD  
A method and apparatus for a modified noise-coupled modulator using zero optimization technique is disclosed. By realizing the resonator coefficient as a part of branches other than those of the...
US20080246642 Digital-to-analog signal converter, and digital-to-analog signal converting method  
A digital-to-analog signal converter includes a digital-to-analog signal converting unit adapted for converting a digital video signal into a pair of analog differential current signals by current...
US20100315277 DIGITAL TO ANALOG CONVERTERS HAVING CIRCUIT ARCHITECTURES TO OVERCOME SWITCH LOSSES  
A digital to analog converter (DAC) includes a pair of operational amplifiers each having a first input coupled to a respective high or low reference voltage. The DAC includes a plurality of...
US20120050080 LINEARITY CORRECTION CIRCUIT FOR VOLTAGE MODE DAC  
A force/sense voltage-mode DAC coupled with multiple transconductance amplifiers that generate a correction current injected to a node in one of the DAC cells is discussed. The correction current...
US20110140941 Voltage adder circuit and D/A converter circuit  
A voltage adder circuit includes an amplifier circuit having a first operational amplifier and into which a first voltage is input, a circuit that supplies an output current to the amplifier...
US20090073013 METHOD FOR PERFORMING A DIGITAL TO ANALOG CONVERSION OF A DIGITAL SIGNAL, AND CORRESPONDING ELECTRONIC DEVICE  
A method for processing a digital signal includes an elementary processing including a radiofrequency transposition with a radiofrequency transposition signal and a digital to analog conversion of...
US20080231487 DIGITAL-TO-ANALOG CONVERTER AND METHOD OF DIGITAL-TO-ANALOG CONVERSION  
A digital-to-analog convertor, and a methods of digital-to-analog conversion employ first and second PWM generators providing first and second PWM signals, said first PWM generator being...
US20120086592 Integrated Upstream Amplifier for Cable Modem and Cable Set-Top Boxes  
An upstream amplifier is integrated on a substrate with a digital-to-analog converter (DAC) to form an integrated circuit. In an embodiment, a low-pass filter is also integrated on the substrate....
US20150207405 INPUT OFFSET CONTROL  
Several circuits and methods for input offset control are disclosed. In an embodiment, a input offset control circuit includes a first input circuit and a second input circuit. The first input...
US20100073212 DIGITAL-TO-ANALOG CONVERTING SYSTEM WITH SAMPLING RATE CONVERSIONS AND SAMPLING RATE CONVERTING METHOD THEREOF  
A digital-to-analog converting system with sampling rate conversions includes an interpolator, S orders of operating and filtering units, an up-converting and down-converting circuit, and a signal...
US20060227028 Simple digital interface for advance power supply control  
A power converter has a digital control that interfaces with an analog driver through a simple and efficient signal connection. A single signal may be used to encode frequency and pulse width...
US20100052965 DIGITAL-ANALOG CONVERTER CIRCUIT, SOLID-STATE IMAGING DEVICE, AND IMAGING APPARATUS  
A digital-analog converter circuit includes: a first digital-analog conversion part that obtains an analog output signal in response to a value of a digital input signal; and a second...
US20130203366 VARIABLE-SIZE MIXER FOR HIGH GAIN RANGE TRANSMITTER  
Implementations of a high gain range transmitter with variable-size mixers are described.
US20110102227 FINE RESISTANCE ADJUSTMENT FOR POLYSILICON  
A resistor string digital to analog converter formed of polysilicon resistor segments to each of which is applied an electric field. The approach improves the overall accuracy.
US20090315819 SOURCE DRIVER AND LIQUID CRYSTAL DISPLAY  
A source driver and a liquid crystal display are provided. The source driver includes a plurality of pads, a first conducting wire, a second conducting wire, a plurality of first digital-to-analog...
US20100033472 DATA DRIVING METHOD FOR DRIVING DISPLAY PANEL, DATA DRIVING CIRCUIT FOR PERFORMING THE SAME, AND DISPLAY APPARATUS HAVING THE DATA DRIVING CIRCUIT  
In a data driving method for driving a display panel, a data driving circuit, and a display apparatus, the data driving method includes receiving a digital driving voltage and an analog driving...
US20090102397 SYSTEM AND METHOD FOR CONTROLLING MULTIPLE LIGHT SOURCES  
A system for controlling multiple light sources is provided. The system includes a controller, a digital to analog converter (DAC), and at least one power amplifier. The controller is configured...
US20090237285 DIGITAL TO ANALOG CONVERTER SPUR CANCELLATION  
A device includes an upsampling digital-analog converter (DAC) and logic to add a DC offset to a signal input to the DAC, the logic adapted to set the DC signal to cancel a DAC output spur.
US20140091959 RF DAC WITH CONFIGURABLE DAC MIXER INTERFACE AND CONFIGURABLE MIXER  
One embodiment of the present disclosure relates to a circuit. The circuit includes a digital to analog converter (DAC) configured to convert a time-varying, multi-bit digital value to a...
US20120286983 RF DAC With Configurable DAC Mixer Interface and Configurable Mixer  
One embodiment of the present disclosure relates to a circuit. The circuit includes a digital to analog converter (DAC) configured to convert a time-varying, multi-bit digital value to a...
US20130207819 STABILITY CORRECTION FOR A SHUFFLER OF A SIGMA-DELTA ADC  
A sigma-delta analog-to-digital converter (“ΣΔ ADC”) may include a loop filter, ADC, a feedback digital-to-analog converter (“DAC”), and a control circuit. The feedback DAC may include several...
US20080218456 Driving circuit and organic light emitting display using the same  
Disclosed are a driving circuit and an organic light emitting display using the same, which realizes stable gray levels. The driving circuit includes a first selector that produces a first...
US20090195426 ADAPTIVE HIGH-ORDER DIGITAL-TO-ANALOG CONVERSION  
Techniques for performing digital-to-analog conversion with first-order or higher-order hold using a simple analog circuit for signal reconstruction and employing feedback control techniques are...
US20140139364 DRIVING CIRCUIT  
A driving circuit includes a plurality of reference voltage lines and a digital to analog converter. The reference voltage lines are configured for respectively transmitting different grayscale...
US20150263745 Distributed Gain Stage for High Speed High Resolution Pipeline Analog to Digital Converters  
In an embodiment, multiple MDAC stages are coupled in parallel to form an MDAC having the desired gain and capacitor size. Each stage may include capacitors and an OTA that are much smaller than...
US20140320327 SCALABLE VOLTAGE RAMP CONTROL FOR POWER SUPPLY SYSTEMS  
A system for scalable voltage ramp control for power supply systems. A system may comprise at least power supply circuitry, digital-to-analog (D/A) converter circuitry and a controller. The power...
US20050168366 Digital fine delay processing  
Digital fine delay processing provides an accurate and continuous delay for an analog signal generated from source digital data. A digital processor generates processed digital data corresponding...
US20110267210 Shaping Inter-Symbol-Interference in Sigma Delta Converter  
A signal converting system is described that has a multi-segment digital to analog converter coupled to one or more error shaping loops. Each error shaping loop includes a quantizer with a...
US20120176263 CURRENT SWITCH CIRCUIT AND DA CONVERTER  
According to one embodiment, a first switch transistor and a second switch transistor convert an input current to a first current and a second current by performing a switching operation on the...
US20120306676 CAPACITIVE VOLTAGE DIVIDER  
A capacitive voltage divider arrangement comprising a first and second voltage divider, a first and second parasitic capacitance being formed between the first and second capacitive voltage...
US20130015994 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...
US20050113948 Digital-to-analog audio conversion  
In the digital-to-analog conversion of an audio signal, a digital audio signal that comprises a plurality of digitally quantized samples of an audio stream is received. The digital audio signal is...
US20130336143 I-Q MISMATCH CALIBRATION AND METHOD  
Techniques are provided for reducing mismatch between the in-phase (I) and quadrature (Q) channels of a communications transmitter or receiver. In an exemplary embodiment, separate voltages are...
US20130328707 I-Q MISMATCH CALIBRATION AND METHOD  
Techniques are provided for reducing mismatch between the in-phase (I) and quadrature (Q) channels of a communications transmitter or receiver. In an exemplary embodiment, separate voltages are...
US20110169678 HIGH FIDELITY, RADIATION TOLERANT ANALOG-TO-DIGITAL CONVERTERS  
Techniques for an analog-to-digital converter (ADC) using pipeline architecture includes a linearization technique for a spurious-free dynamic range (SFDR) over 80 deciBels. In some embodiments,...
US20100045502 CURRENT OUTPUT TYPE DIGITAL-ANALOG CONVERSION CIRCUIT, AND GRAPHIC DISPLAY DEVICE  
A current output type digital-analog conversion circuit which outputs a current signal includes a decoder for decoding higher-order bits of input digital data, a plurality of binary current...
US20120146828 DIGITAL-TO-ANALOG CONVERTER WITH NON-UNIFORM RESOLUTION  
A circuit includes a digital-to-analog converter with non-uniform resolution for converting a digital signal into an analog signal. The digital-to-analog converter includes high-resolution...
US20120112944 MULTIPLYING DAC AND A METHOD THEREOF  
The present invention is directed to a multiplying digital-to-analog converter (MDAC) and its method. First ends of capacitors are electrically coupled to an inverting input node of an amplifier,...
US20090262769 LASER DRIVE CIRCUIT AND USE  
A laser drive circuit and use of digital-to-analog converters is provided, each with a current input and a current output to set current values of partial currents switchable by means of digital...
US20100164765 DAC calibration circuits and methods  
Provided is a DAC with tuning circuitry in accordance with some embodiments for tuning current sources in the DAC. The DAC may be used for a sigma-delta converter in some embodiments.

Matches 1 - 50 out of 450 1 2 3 4 5 6 7 8 9 >