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7629908 |
D/A conversion circuit, organic EL drive circuit and organic EL display device
A D/A converter of the current switching type has a first current mirror circuit that D/A converts the upper (n−m) digits in n bit data to be converted and a weighting current circuit block or a...
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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...
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7609191 |
Digital/analog converting driver and method
A digital/analog converting driver and a digital/analog converting method, in which the digital/analog converting driver converts digital data having M+N (M and N are integers) bits into an analog...
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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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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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7592940 |
Digital-to-analog converter and digital-to-analog conversion method thereof
A digital-to-analog converter (DAC) can minimize the increase of an area caused by increase of number of bits. The DAC includes a coarse resistor-string digital-to-analog conversion unit for...
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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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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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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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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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7576608 |
Amplifier circuit with voltage interpolation function
An amplifier circuit with a voltage interpolation function includes an N-type differential pair and a P-type differential pair. The N-type differential pair includes a first transconductance value,...
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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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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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7535396 |
Digital-to-analog converter (DAC) having filter sections with differing polarity
A digital-to-analog converter (DAC) having filter sections with differing polarity provides a low-noise, low area bipolar output solution in delta-sigma modulator based DACs. A shift register...
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7535395 |
Digital potentiometer including plural bulk impedance devices
Embodiments of a digital potentiometer are disclosed that require lesser numbers of components than conventional digital potentiometers. A first string of elemental impedance devices, and at least...
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7535397 |
Digital-to-analog converter and the method thereof
A digital-to-analog converter (DAC) is provided for converting an (X+Y)-bit input word, which includes an X-bit MSB subword and a Y-bit LSB subword, into a current signal. The DAC has an X-bit...
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7535394 |
High speed arbitrary waveform generator
A high-speed arbitrary waveform generator (AWG) that utilizes multiple digital-to-analog converters (D/A converters) and overcomes bandwidth limitations of individual D/A converters to produce...
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7532142 |
Structures for systems and methods of generating an analog signal
A digital to analog converter (DAC) system includes a resistor network providing enhanced response time and steady state characteristics.
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7532140 |
Gradient insensitive split-core digital to analog converter
Digital to analog converter circuits and methods are provided for producing an analog output voltage indicative of a digital input signal with at least partial insensitivity to error gradients....
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7525470 |
Phase control for interleaved analog-to-digital conversion for electronic dispersion compensation
Embodiments include a system for performing dispersion compensation on an electromagnetic signal received over a communication channel, the electromagnetic signal bearing information at a symbol...
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7522082 |
Digital-to-analog converter, analog-to-digital converter, and semiconductor device
A DA conversion device includes the following elements. A higher-bit current source cell portion includes uniformly weighted higher-bit current source cells to generate an identical constant...
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7522081 |
Digital-to-analog converter based on a pre-decoder, a binary decoder and ROM decoders
For reducing device areas required by digital-to-analog converters used in source driving circuits of a liquid crystal display device, a compound circuit structure based on a pre-decoder, a binary...
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7515072 |
Method and apparatus for converting PCM to PWM
A circuit for converting from an input serial pulse code modulated (PCM) digital signal to an output pulse width modulated (PWM) digital signal for driving a switching audio amplifier requiring a...
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7511650 |
Digital to analog converter
A digital-to-analog converter is provided. The DAC includes a R-string section, a first DAC section, a second DAC section, a multiplexer, and an operational amplifier. The R-string section provides...
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7501970 |
Digital to analog converter architecture and method having low switch count and small output impedance
A digital to analog converter includes a coarse resolution resistor circuit ( 11 ) coupled between a first voltage (Vin) and an intermediate voltage (V 0 ) to produce coarse resolution node...
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7482961 |
Digital feedthrough cancellation
A method for operating a DAC to minimize digital feedthrough includes inputting a clock signal to a DAC clock input, the clock signal having a periodic series of trigger events, wherein input data...
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7474245 |
Digital-to-analog converter
A digital-to-analog converter outputting an output analog voltage according to an N-bit digital signal is provided. The digital-to-analog converter includes a first and a second resistor strings, a...
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7468686 |
Systems and methods for providing compact digitally controlled trim of multi-segment circuits
A trimdac circuit for adjusting the output of a digital-to-analog converter (DAC) is provided. The trimdac may be used to adjust a plurality of resistor segments in the DAC. The trimdac may include...
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7456773 |
Pseudo-differential class-AB digital-to-analog converter with code dependent DC current
A digital-to-analog converter, RF transmit channel and method, for converting a digital signal of N bits having a set M of most significant bits and a set L of least significant bits to an analog...
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7456767 |
D/A converter circuit, organic EL drive circuit, and organic EL display
A D/A converter circuit includes a first current mirror circuit and a second current mirror circuit. The first current mirror circuit has a plurality of output side transistors provided...
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7456772 |
Fast, high resolution digital-to-analog converter
A fast, high resolution digital-to-analog converter (DAC) is described herein. The DAC comprises a pulse generator, decay circuit, controller, and sample circuit. The pulse generator serially...
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7453386 |
Digital to analog converter and source driver
A digital to analog converter (DAC) converting digital data into a corresponding analog voltage is disclosed. The digital data includes upper bit data and lower bit data and the DAC includes; a...
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7453385 |
D/A converter
A D/A converter includes: an (N−1)-stage reference resistor group; an N-stage reference resistor group; inter-stage op-amps applying a divided voltage outputted from voltage taps of the...
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7449921 |
Apparatus and method reducing glitch in switching device
Provided are an apparatus and method of reducing a glitch in a switching device. The apparatus includes a latch latching a digital input signal and providing a digital output signal, a switching...
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7446683 |
Digital current source
A digital current source used to mirror a reference current is provided. The digitally controlled analog current source multiplies a current from a master mirror transistor producing an output...
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7443326 |
Digital input signals constructor providing analog representation thereof
A digital to analog waveform converter featuring a DSP, discrete output devices, and Multi Input Multi Output (MIMO) device, wherein the MIMO device includes low accuracy components featuring high...
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7443323 |
Calibrating a digital-to-analog converter
Methods and corresponding systems for calibrating a digital-to-analog converter include selecting first and second code regions in the digital-to-analog converter, wherein the first and second code...
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7432839 |
ADC with logarithmic response and methods for controlling RF power levels
Embodiments of an analog-to-digital converter (ADC) and methods for controlling RF power levels are generally described herein. Other embodiments may be described and claimed. In some embodiments,...
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7425912 |
Digital-to-analog converter with controlled buffered inputs
A DAC circuit is provided which implements a buffered DAC input where the buffer is provided by a differential amplifier whose supply rail is correlated with the input to the DAC. In this way it is...
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7423571 |
Resistor-string digital/analog converter circuit and semiconductor device including the same circuit
A resistor-string digital/analog converter circuit includes a plurality of resistors configured to divide a predetermined voltage, a plurality of MOS transistors configured to divide a voltage...
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7423259 |
Mass spectrometer and method for enhancing dynamic range
A mass spectrometer comprises an ion detector, a first amplifier, a second amplifier, and a spectra combiner. The ion detector is configured to generate an analog signal indicative of ions detected...
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7423572 |
Digital-to-analog converter
For example, in order to convert a 6-bit digital signal into an analog signal, a reference voltage generating circuit for generating 17 reference voltages, a first switch circuit having 19 switch...
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7420496 |
Digital/analog converting apparatus with high resolution
A high resolution digital/analog converting apparatus for a spatial optical modulator includes a resistor string including a plurality of resistors connected to each other in series between...
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7417572 |
Voltage interpolation in digital-to-analog signal conversion
A multiple-input follower amplifier is coupled through a configuration of switching devices to an upper reference voltage at a number of its inputs and to a lower reference voltage at the remaining...
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7414561 |
Gradient insensitive split-core digital to analog converter
Digital to analog converter circuits and methods are provided for producing an analog output voltage indicative of a digital input signal with at least partial insensitivity to error gradients....
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7411536 |
Digital-to-analog converter
A digital-to-analog converter and method for transforming a digital value into an analog signal are disclosed. The digital-to-analog converter has a voltage generator, a voltage selector, a...
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7385544 |
Reference voltage generators for use in display applications
A multi-reference voltage generator includes an interface controller, a first bank of N m-bit registers and a second bank of N m-bit registers. A first multiplexer has inputs connected to outputs...
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7382299 |
Method of calibrating digital-to-analog converter input based on analog-to-digital converter output and analog encoding apparatus employing the method
A method of calibrating an input of a digital-to-analog (D/A) converter based on an output of an analog-to-digital (A/D) converter in an analog encoding apparatus including the D/A converter and...
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7378998 |
Correction of static mismatch errors in a D/A converter
Methods, articles of manufacture and systems for the correction of static mismatch errors in D/A converters, where an input word, being the digital representation of an analog input signal, is...
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