Matches 1 - 50 out of 358 1 2 3 4 5 6 7 8 >


Match Document Document Title
9041577 Digital-to-analogue converter  
The invention relates to digital-to-analog converters for converting current. The converter includes a pair of differential branches with two transistors controlled by a digital register activated...
8994566 DA converter  
There is provided A DA converter in which the N current switch cells each include: a current source having one end connected to a first power source; and first and second switch transistors...
8981981 Digital-to-analog converter with monotonicity  
Systems and methods provide for the control of a fully-segmented digital-to-analog converter. The selected lead-most current cell of an array in the digital-to-analog converter is addressed...
8947282 Method and apparatus for a current control  
A current controller includes impedance elements coupled to form at least one impedance ladder circuit which exhibits a fixed impedance at an input and current divider steps each differing in a...
8941522 Segmented digital-to-analog converter having weighted current sources  
A digital input to a digital-to-analog converter (DAC) is divided into a most significant portion and a lesser significant portion. At least one tap voltage generator generates a plurality of...
8928512 Digital to analog converter and method for controlling current source array in digital to analog converter  
A digital to analog converter and a method for controlling a current source array in a digital to analog converter relate to the field of electronics technologies, and are used to reduce a system...
8922409 Switch-driving circuit and DAC using the same  
A switch-driving circuit and a Digital-to-Analog Converter (DAC) using the switch-driving circuit are provided. The switch-driving circuit includes a main cell and a reference cell. The main cell...
8922412 Bimodal digital-to-analog conversion  
An apparatus relating generally to digital-to-analog conversion is disclosed. In such an apparatus, a digital-to-analog converter (“DAC”) device includes a source DAC and a sink DAC selectively...
8878570 Configurable analog front end  
An integrated circuit includes a configurable interface. The configurable interface includes an operational amplifier, a programmable gain amplifier, an analog-to-digital converter and a first...
8860597 Digital to-analog converter circuitry with weighted resistance elements  
Digital-to-analog converter circuitry is described. The digital-to-analog converter circuitry includes a plurality of weighted resistance elements. A first weighted resistance element includes a...
8836560 Digital to analog converters with adjustable output resolution  
A digital to analog converter (DAC) includes: first and second nodes; a first switching device; a second switching device; and a switch control module. The switch control module selectively...
8836561 Digital to-analog conversion circuit  
A D/A conversion circuit includes: current generation circuits each including a constant current source configured to generate a current, a first MOSFET connected to the constant current source...
8830102 Compact digital-to-analog converter  
An example digital-to-analog converter includes a reference scaling circuit receiving a first reference current and generating a second reference current. A first plurality of current sources is...
8766841 Impedance network for producing a weighted sum of inputs  
A dynamically selectable resistor network is provided in a star configuration for producing a weighted sum of input values, without attenuation from near zero contributions. Each branch of the...
8760332 Digital-analog conversion apparatus and method  
An apparatus and a method for digital-analog conversion are provided. The apparatus includes a first cell matrix for outputting a current of a signal corresponding to a number of Most Significant...
8742964 Noise reduction method with chopping for a merged MEMS accelerometer sensor  
An apparatus includes a capacitance-to-voltage converter circuit configured to be electrically coupled to a micro-electromechanical system (MEMS) sensor circuit. The capacitance-to-voltage...
8717215 Method and apparatus for improving the performance of a DAC switch array  
One of the critical design parameters occurs when a digital signal is converted into an analog signal. As the supply voltage drops to less than 2 times of threshold voltage to reduce leakage and...
8659458 Multiple return-to-zero current switching digital-to-analog converter for RF signal generation  
A “multiple return-to-zero” (MRZ) current switching DAC. In operation, the outputs of respective current sources are selectively directed to respective intermediate nodes in response to respective...
8514116 Method for improving the resolution and for correcting distortions in a sigma-delta modulator, and sigma-delta modulator implementing said method  
In a method for improving resolution and for correcting distortions for a sigma-delta modulator, a modulator converts an analog input signal into a secondary output digital signal sampled at a...
8487800 Resistive digital-to-analog conversion  
Examples of resistive digital-to-analog converter (RDAC) circuits are provided herein. RDAC circuits may provide an analog output signal derived from an n-bit digital input signal. In one example,...
8456342 Switch sequencing for code-range-specific linearity improvement in digital-to-analog converters  
A digital-to-analog converter (DAC) uses thermometer coding over a certain code range. A switch array for the certain code range is implemented into a smaller area of the integrated circuit die so...
8416112 Circuitry and method for digital to analog current signal conversion with phase interpolation  
Circuitry and method for digital-to-analog current signal conversion with phase interpolation. For an n-bit digital-to-analog converter (DAC), the number 2n control bits normally required can be...
8410966 Current DAC  
A current digital-to-analog converter (DAC) is disclosed. The current DAC includes a current reference circuit coupled between a voltage source terminal and a voltage node, wherein the current...
8217817 Current switch circuit and D/A converter, semiconductor integrated circuit, and communication device using the same  
[Means for Solving the Problem] In a current switch circuit A used for a current steering D/A converter, a current switch basic circuit 1 includes first and second transistors Tr121 and Tr122...
8144042 Combinatorial circuit with shorter delay when inputs arrive sequentially and delta sigma modulator using the combinatorial circuit  
A combinatorial circuit with pre-calculation and having shorter delay is described. The combinatorial circuit uses information available from earlier input signals to pre-calculate intermediate...
8094055 Compact digital-to-analog converter  
A digital-to-analog converter is disclosed. An example digital-to-analog converter circuit includes a reference scaling circuit coupled to receive a first reference current. The reference scaling...
8093985 Architecture for a highly accurate DCP  
Circuits, methods, and apparatus that provide highly accurate DCPs. One example provides a DCP that includes a resistor string having taps that may be selected by a corresponding number of...
8085178 Multiplying-adding return to zero digital to analog converter circuit and method  
A digital to analog converter (DAC) method and apparatus employs a multiplying-adding DAC, eliminating digital adder circuitry. Examples are given for multiplying a 3-bit binary number by a 2-bit...
8013771 Method and apparatus for bandpass digital-to-analog conversion  
The disclosed embodiments provide method and apparatus for digital to analog conversion of a signal that may be limited to a bandpass frequency. In an exemplary embodiment, a bandpass DAC is...
8009073 Method and apparatus for generating an analog signal having a pre-determined pattern  
A circuit configured to generate an analog signal having a pre-determined pattern. The circuit includes a plurality of digital-to-analog converters. Each of the plurality of digital-to-analog...
7978109 Output apparatus and test apparatus  
Provided is an output apparatus for outputting a current from an output end, including: a plurality of current sources; a plurality of switches provided in association with the plurality of...
7965212 DAC circuit using summing junction delay compensation  
Techniques are disclosed for improving the dynamic performance of digital-to-analog converters (DAC), by compensating for the unique delay characteristics of each bit in the DAC summing junction...
7928880 Digital analog converter  
A digital analog converter has an input terminal receiving a digital input signal, a lower-side capacitor group coupled to a lower-side common terminal in parallel, an upper-side capacitor group...
7924201 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...
7924196 Digital-analog converter  
A parallel digital-analog converter for the conversion of a plurality of differential digital input signals into a differential analog output signal, including a group of 1-bit digital-analog...
7916058 Digital-to-analog converter (DAC) with reference-rotated DAC elements  
In accordance with at least some embodiments, an electronic device comprises a digital-to-analog converter (DAC) having a DAC element array. Reference-rotated data weighted averaging (RRDWA) is...
7903016 High power and high frequency gallium nitride based digital to analog converter for direct digital radio frequency power waveform synthesis  
A high power digital to analog converter (DAC) includes (a) an array of n bipolar transistors arranged in a binary sequence, (b) a depletion mode FET and (c) an array of n switches. The collector...
7903012 D/A converter and reference voltage circuit including same  
A variable resistor is connected to each terminal of (2^n)−1 resistors R connected in series. The variable resistors have resistances RH and RL determined according to a digital signal containing...
7868808 Phase-locked loop circuitry using charge pumps with current mirror circuitry  
A system and method for performing phase-locked loop is disclosed. The system includes phase frequency detector circuitry, charge pump circuitry having first current mirror circuitry and second...
7855670 A-to-D converter  
A successive approximation type A-to-D converter includes a cyclic D-to-A converter (11), a comparator (12) for comparing an analog value with an output value of the D-to-A converter (11), and...
7847718 Digital-to-analog converter, data driver and display device using same  
A digital-to-analog converter including includes a decoder which receives m (where m>=4 holds) reference voltages having voltage values that differ from one another, and selects and outputs n...
7821438 Digital-to-analog converter circuit layout  
A digital-to-analog converter circuit layout includes a ratiometric digital-to-analog converter. The ratiometric digital-to-analog converter includes a digital data input, a converter voltage...
RE41831 Class B driver  
A communication circuit, Ethernet controller card, and method comprises K digital-to-analog converters each receiving a corresponding digital control signal and each providing a corresponding...
7796073 Current switch circuit and D/A converter, semiconductor integrated circuit, and communication device using the same  
In a current switch circuit A used for a current steering D/A converter, a current switch basic circuit 1 includes first and second transistors Tr121 and Tr122 included in a differential switch...
7782236 Current cell circuit in digital-analog converter  
Embodiments relate to a current cell circuit in a digital-analog converter. According to embodiments, a current cell circuit in a digital-analog converter may include a current source connected to...
7764210 System and method for converting an input signal  
A video driver includes a current-to-voltage converter circuit that converts an analog input current to a corresponding analog voltage. Active termination circuitry is configured to synthesize an...
7760121 Dual data weighted average dynamic element matching in analog-to-digital converters  
Methods and systems to provide dynamic element matching (DEM) in multi-phase sample systems include multiple uncorrelated, dual data weighted averaging, dynamic element matching (DDWA DEM). DDWA...
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...
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...

Matches 1 - 50 out of 358 1 2 3 4 5 6 7 8 >