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8912939 String DAC leakage current cancellation  
Embodiments of the present invention may provide a multi-string DAC with leakage current cancellation. A leakage cancellation circuit may be coupled to output node(s) of theā€”multi-string DAC. The...
8912936 Electric signal conversion  
In one aspect, an electrical signal converter is disclosed. The exemplary electrical signal converter may include a plurality of ordered converter elements. Element selection logic may be provided...
RE45282 Method and apparatus for operating a CMOS imager having a pipelined analog to digital converter  
An image sensor system using offset analog to digital converters. The analog to digital converters require a plurality of clock cycles to carry out the actual conversion. These conversions are...
8907832 Polarity compensating dual-string digital-to-analog converters (DACs), and related circuits, systems, and methods  
Polarity compensating dual-string digital-to-analog converters (DACs), and related circuits, systems, and methods are disclosed. In embodiments disclosed herein, a secondary voltage divider of a...
8907831 High-resolution digital to analog converter  
A system includes an N-bit digital-to-analog converter and an M-bit sub-digital-to-analog converter. The N-bit digital-to-analog converter includes 2N resistances connected in series across first...
8903092 High speed digital to analog converter with reduced spurious outputs  
A system includes a first circuit including a scrambling module that receives N digital data streams and that scrambles the N digital data streams using a scrambling sequence. A data bus receives...
8896471 Conversion of a discrete-time quantized signal into a continuous-time, continuously variable signal  
Provided are, among other things, systems, apparatuses, methods and techniques for converting a discrete-time quantized signal into a continuous-time, continuously variable signal. An exemplary...
8896473 Digital-to-analog-converter with resistor ladder  
A digital-to analog-converter (DAC) has a MSB resistor ladder with a plurality of series connected resistors, wherein the MSB resistor ladder is coupled between a first and second reference...
8896472 Low glitch-noise DAC  
An N-bit digital-to-analog converter (DAC) includes N input stages each of which generates the same amount of current and includes a pair of similarly sized transistor switches responsive to...
8896478 Successive approximation analog-to-digital converter using capacitor array with sub-capacitors configured by capacitor disassembling and related method thereof  
A successive approximation analog-to-digital converter (SAR ADC) includes a capacitor array and a comparator. The capacitor array has M capacitors which are arranged to perform capacitor switching...
8896757 Delta-sigma A/D converter, limiter circuit and television receiver  
There is provided a delta-sigma A/D converter including a first integrator, a second integrator located on an output side of the first integrator, a quantizer located on an output side of the...
8890737 Current balancing, current sensor, and phase balancing apparatus and method for a voltage regulator  
Described are apparatuses and methods of current balancing, current sensing and phase balancing, offset cancellation, digital to analog current converter with monotonic output using binary coded...
8890736 Signal mixing circuit and associated converter  
A signal mixing circuit which mixes input signal(s) and oscillation signal(s) by mixer block(s) to provide a mixed signal. Each mixer block includes a summing node and a circuit unit; the summing...
8890731 Conversion circuit and chip  
The present invention provides a conversion circuit including: an inputting unit, a DAC connected to the inputting unit, an ADC connected to an output end of the DAC, and a comparing unit...
8884798 Binary divarication digital-to-analog conversion  
Systems and techniques for performing binary divarication digital-to-analog conversion are described. A described converter includes voltage range adjusters arranged in series to convert a digital...
8884797 Systems and methods providing active and passive charge sharing in a digital to analog converter  
A method for converting a multi-bit digital value to an analog value. The method includes, in a first conversion cycle, converting a first set of digital bits to a first analog voltage using...
8884799 Dual-string digital-to-analog converters (DACs), and related circuits, systems, and methods  
Dual-string digital-to-analog converters (DACs), and related circuits, systems, and methods are disclosed. In embodiments disclosed herein, a primary voltage divider of the dual string-DAC is...
8878709 Semiconductor integrated circuit and liquid crystal drive circuit  
Disclosed herein is a semiconductor integrated circuit including: line buffers; an alpha channel first selector; an alpha channel digital-to-analog converter; a beta channel digital-to-analog...
8872687 Digital to analog converting method and converter insensitive to code-dependent distortions  
A digital to analog converting method insensitive to code-dependent distortions is implemented by a digital to analog converter (DAC) having a plurality of unit current sources. A plurality of...
8872686 Low glitch current digital-to-analog converter  
The present disclosure relates to a method and architecture to minimize a transient glitch within a current digital-to-analog converter (DAC) comprising an array of identical current unit cells....
8872691 Metastability detection and correction in analog to digital converter  
A method of operating an analog to digital converter (ADC) comprises comparing an analog input signal to a reference signal, using a comparator, and generating a comparator output according to the...
8872685 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...
8866656 Hybrid digital-to-analog converter and method thereof  
Hybrid digital-to-analog converter and method thereof are provided. The hybrid digital-to-analog converter (DAC) includes a data processor, at least one first type DAC, at least one second type...
8866658 Digital-to-analog converter  
A resistor string digital-to-analog converter includes a high-order resistor string, first high-order switches, a high-order decoder, a low-order decoder, and a conversion unit. The high-order...
8866657 Apparatus and method for converting analog signal to digital signal  
An apparatus of a Digital-to-Analog Converter (DAC) is provided. The apparatus includes a logic circuit for performing a logical operation based on a combination of bit values b0 through bN-1 of a...
8866650 Apparatus, systems and methods for for digital testing of ADC/DAC combination  
A circuit for testing digital-to-analog (DAC) and analog-to-digital converters (ADC) is provided. The circuit applies a code pattern having a plurality of sequential values to the digital to...
8860595 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...
8860594 System and method for digital signaling  
Systems and methods for communicating digital data associated with amplitudes and phases of a virtual periodic waveform having a designated period between components connected by n conductors...
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...
8854242 Radio frequency digital to analog converter  
A RF digital to analog converter has a first capacitor arrangement, a first common node, and a first controller. The first capacitor arrangement has multiple switchable capacitor paths arranged in...
8855579 System and method for correcting integral nonlinearity in an oscillator system  
A method may include measuring a frequency difference between an actual frequency and an expected frequency associated with a frequency control calibration signal value for each of a plurality of...
8847808 Process, voltage, and temperature insensitive biasing  
A biasing circuit facilitates process, temperature, and voltage insensitive operation of a circuit block. The biasing circuit may include a replicate circuit corresponding to the circuit block....
8847806 Digital to analog converter comprising mixer  
One example described herein relates to a digital to analog converter (DAC). The DAC includes a digital signal input configured to receive a multi-bit digital input signal, and a plurality of...
8847803 Parallel multibit digital-to-digital sigma-delta modulation  
Digital input words are received in parallel by a parallel digital-to-digital sigma-delta modulator. Error words corresponding to quantization error are added in parallel to the input words to...
8847807 Switching scheme for ISI mitigation in data converters  
Embodiments of the present disclosure may provide a switching scheme for tri-level unit elements with ISI mitigation. A tri-level unit element may include a first and second current source and a...
8847801 Calibration systems and methods for digital-to-analog converter  
Circuits, methods, non-transitory storage media can be configured to reduce calibration errors in a signal converter. A digital-to-analog converter can include a calibration circuit configured to...
8849219 DA converter and wireless communication apparatus  
In general, according to one embodiment, a DA converter configured to convert a digital signal comprising n (n>1) bits to an analog current to output the analog current from an output terminal,...
8842027 Analog to digital converter and method for evaluating capacitor weighting of digital-to-analog converter thereof  
A method for evaluating capacitor weighting of an analog-to-digital (ADC) is provided. An equivalent weighting value of each composed capacitor in each sub-capacitor-array may be obtained by...
8842033 Dynamic linearity corrector for digital-to-analog converters  
A predistortion generator includes a sample input, a summing circuit to output predistorted samples to a DAC, and distortion term processors, each including a product generator and a FIR filter in...
8842028 Optical digital-to-analog converstion  
The present invention relates to Digital-to-Analog conversion in the optical or photonic domain. The present invention provides a digital-to-analog converter (DAC) (100) arranged to receive an...
8842034 Resistor network implemented in an integrated circuit  
A resistor network implemented in an integrated circuit includes a first plurality of interconnect traces coupled in series at a first plurality of nodes; a first plurality of switches coupled...
8842030 Sigma-delta analog to digital converter with improved feedback  
A sigma-delta analog-to-digital converter includes an input transconductance stage that provides an analog input current proportional to an analog input voltage and a current summing stage that...
8842029 Area-efficiency delta modulator for quantizing an analog signal  
The invention comprises sample-and-hold circuit and digital-to-analog converter into a differentially operational unit. In analog-to-digital conversion unit, on the premise of fixed or non-fixed...
8842032 Enhanced second order noise shaped segmentation and dynamic element matching technique  
A method and circuit to perform noise shaped splitting of a digital input signal may include using multiple layers to process the input signal. In the first layer, the most significant bits of the...
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...
8836562 ***WITHDRAWN PATENT AS PER THE LATEST USPTO WITHDRAWN LIST***
Dual-string digital-to-analog converters (DACs), and related circuits, systems, and methods
 
Dual-string digital-to-analog converters (DACs), and related circuits, systems, and methods are disclosed. In embodiments disclosed herein, a primary voltage divider of the dual string-DAC is...
8836559 Capacitive digital to analog converter  
Some examples relate to a digital to analog converter (DAC). The DAC includes a digital signal input configured to receive a multi-bit digital input signal, and an array of cells. Respective cells...
8830101 Single phase clock D/A converter with built-in data combiner  
According to some embodiments, a digital to analog converter comprises an array of input data streams. An array of differential MOS switches are all biased by a common tail current source. A data...
8830100 Digital-analog converter and control method thereof  
A digital-analog converter circuit includes sampling capacitive elements (111, 112, . . . , 11N) of which one ends are to be electrically connected to and disconnected from input terminals (D1,...