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8125366 Integrating (slope) DAC architecture  
A current source is used to pre-charge a capacitor to a known value. The capacitor can then be connected to a unity gain buffer to provide a low cost DAC. The DAC can include a self-calibration...
8126422 Receiver having voltage-to-current and current-to-voltage converters  
A receiver (300) comprises an antenna input (301), a filter (302), a voltage-to-current converter (303), a down frequency conversion mixer (304), and a current-to-voltage converter (305). The...
8125362 Apparatus and associated methods for generating reference signals  
An integrated circuit (IC) includes a reference circuit. The reference circuit includes at least one controlled current source. The reference circuit further includes a sigma-delta modulator...
8125361 Digital-to-analog converter (DAC) calibration system  
The present invention relates generally to a digital-to-analog converter (DAC) calibration. The present invention may be implemented by a DAC calibration system including a first current source, a...
8120518 Digital feedforward sigma-delta modulator in analog-to-digital converter and modulation method thereof  
A digital feedforward sigma-delta modulator in an analog-to-digital converter and its modulation method are disclosed. The modulator changes a feedforward path from an analog domain to a digital...
8120517 Digital-analog conversion circuit and output data correction method of the same  
A digital-analog conversion circuit includes a correction unit that adds a correction bit to a lower-order bit of externally input first digital input data and outputs second digital input data,...
8115663 Mismatch-immune digital-to-analog converter  
In an embodiment, a digital-to-analog converter (DAC) includes inputs for receiving first and second signals encoded as a digital signal pair including overlapping low value portions that are...
8111181 Single-ended polar transmitting circuit with current salvaging and substantially constant bandwidth  
An embodiment of the invention provides a single-ended polar transmitting circuit. The single-ended polar transmitting circuit comprises a DAC, a differential-to-single-ended converter, a GmC...
8111183 Systems and methods for digital upconversion for digital signals  
Systems and methods for digital upconversion of digital signals are provided. In one embodiment, the system includes a digital frequency adjustment system and a digital to analog conversion...
8111178 Calibration method and related calibration apparatus for capacitor array  
A capacitor array includes a plurality of capacitor components each having a first node and a second node, and first nodes of the capacitor components are coupled to each other. A calibration...
8111182 Digital to analog converter comprising mixer  
In some embodiments, digital to analog converters are provided which comprise a plurality of cells. Each cell comprises a mixer and coupling circuitry to selectively couple a local oscillator...
8111184 Digital-to-analog converting circuit, data driver and display device  
A m-bit DAC outputs a voltage that is the result of interpolation from two reference voltages. The two reference voltages are selected, inclusive of redundant selection of the same reference...
8111312 Solid-state imaging device, method of driving the same, and camera  
A solid-state imaging device includes: a plurality of pixels which are arranged in a matrix; a sequential scanning device that selects each row of pixels; and an analog-to-digital conversion unit...
8106803 Discharge digital-to-analog converter  
A digital-to-analog conversion circuit operates by selectively discharging members of a plurality of capacitors. Charging of the capacitors occurs during a reset period while digital-to-analog...
8098718 Apparatus and methods for digital-to-analog conversion with vector quantization  
A digital-to-analog converter (DAC) includes a mismatch shaping feedback vector quantizer configured to store state information in expanded format using One-Hot Encoding of a matrix. The expanded...
8094054 Transmitter with delay mismatch compensation  
A transmitter device comprises a digital part and an analog part. The digital part comprises a digital modulator for receiving bits and for digitally modulating the received bits. The transmitter...
8094057 A/D conversion circuit, electronic apparatus, and A/D conversion method  
An A/D conversion circuit includes: a sample-and-hold circuit adapted to sample and hold an input signal to output a sampled signal; a control circuit adapted to output successive approximation...
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...
8094052 Circuit and method for dynamically selecting circuit elements  
Techniques for dynamically selecting circuit elements to combat mismatches are described. In one design, an apparatus includes first, second, and third circuits. The first circuit receives input...
8094053 Signal generating apparatus and test apparatus  
Provided is a signal generating apparatus comprising a DA converter that outputs an output signal corresponding to input data supplied thereto; a sample/hold unit that is provided between the DA...
8089383 Programmable digital-to-analog converter  
A multi-mode digital-to-analog converter (DAC) configured to operate in a plurality of modes.
8089386 Isolation unit for a conventional 2-conductor communication connection including a sensor, a measurement transmitter and a control unit  
For a conventional 2-conductor communication connection, which includes a sensor, a measurement transmitter and a control unit, an isolation unit is provided, which serves for transmission of...
8089385 D/A conversion circuit and semiconductor device  
A D/A conversion circuit in accordance with the present invention, which is provided with a switch swD, allows a writing operation of a voltage (a true gradation voltage) to be performed at a...
8089381 Photonic D/A  
An all-optical combined serial-to-parallel and digital-to-analog convertor using standard WDM technology is realized. The system is based on bit interleaving and cross-gain modulation (XGM) in a...
8089384 Programmable digital-to-analog converter  
A multi-mode digital-to-analog converter (DAC) configured to operate in a plurality of modes.
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...
8085176 Method and apparatus for dithering in multi-bit sigma-delta digital-to-analog converters  
A multi-bit (M-bit, M>1) Sigma-Delta digital-to-analog converter (DAC) with a variable resolution multi-bit quantizer that has its digital value inputs that are truncated or rounded to a...
8085177 Digital to analog converter system and method with multi-level scrambling  
Tri-level scrambling in a digital to analog converter system is achieved by, in response to a tri-level binary code input, disabling a negative data directed scrambler circuit when the input code...
8081099 D/A converter, differential switch, semiconductor integrated circuit, video apparatus, and communication apparatus  
In a D/A converter that has a plurality of current sources (IS1, IS2 and IS3-1 to IS3-63) each including a transistor, and is for converting an input digital signal into an analog signal by...
8077067 Method and apparatus for simulating a potentiometer  
A contactless sensor utilizes analog and digital circuitry to provide direct interchangeability with a simple potentiometric sensor, matching all of the electrical properties of a potentiometer,...
8078122 Interface between digital and analog circuits  
Circuitry that generates an interface signal between a first and a second integrated circuit (IC). The circuitry includes a reference circuit that provides a reference signal, an interface...
8068044 Correction circuit for D/A converter  
There is provided a correction circuit for a D/A converter, comprising: a constant current source to be connected between high- and low-potential power source lines for supplying a power source...
8063805 Digital feedback technique for regulators  
A voltage regulator uses a digital feedback technique to regulate the voltage at an output of the regulator. The voltage level of an output signal is measured. The voltage level of the output...
8063804 Switching unit for generating an output voltage as a function of a digital data value and method for calibrating the switching unit  
With analog output stages of digital systems, the relationship between a digital data value, which is assigned to an analog output stage and to an actually generated output voltage, often does not...
8063807 Equalization circuitry including a digital-to-analog converter having a voltage divider and a multiplexer  
An equalization circuitry that includes a digital-to-analog converter having a voltage divider and a multiplexer coupled to the voltage divider is described. In one implementation, the...
8059021 Digital-analog converting apparatus and test apparatus  
Provided is a DA conversion apparatus comprising a capacitor array DA converter that outputs to an output line an output voltage corresponding to a digital value input thereto; and a load changing...
8059022 Digital-to-analog converter  
A digital-to-analog converter (DAC) is provided. The DAC includes a positive converter, a negative converter, and a comparator for receiving outputs of the positive converter and the negative...
8060044 Impulse waveform generating apparatus  
An impulse waveform generating apparatus comprises an oscillator for generating a reference signal having a center frequency in a frequency band of an impulse to generate, a timing matching...
8054256 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...
8054302 Digital to analog converter with minimum area and source driver having the same  
Embodiments of the invention provide a digital-to-analog converter (DAC) that is configured to process upper data bits, a control data bit, and a lower data bit using two decoders and a control...
8049654 Digital trimming of SAR ADCs  
Successive approximation register (SAR) analog-to-digital converters (ADCs) generally employ capacitive digital-to-analog converters (CDACs) to perform data conversions. In these CDACs, matching...
8044835 Linearized optical digital-to-analog modulator  
A modulator device for converting digital data into modulation of an optical signal includes an electronic input for receiving an input data word of N bits and an electrically controllable...
8042012 Systems and devices including memory with built-in self test and methods of making and using the same  
Disclosed are methods, systems and devices, such as a device including a data location, a quantizing circuit coupled to the data location, and a test module coupled to the quantizing circuit. The...
8035542 Digital-to-analog converter and successive approximation type analog-to-digital converter including the same  
A digital-to-analog converter generates a voltage from power supply and ground voltages, generates upper and lower limit reference voltages for a reference width which regards the generated...
8035541 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...
8031097 Multiplying digital-to-analog converter for high speed and low supply voltage  
A multiplying digital-to-analog converter includes an operational amplifier (OP-amp) operated under a first power supply voltage and a second power supply voltage; an OP-amp input switch block...
8031093 Reduced component digital to analog decoder and method  
An n bit D/A decoder is formed using P-type and N-type transistor switches, instead of convention CMOS switches. Each P-type and N-type switch may be formed of fewer transistors than those used to...
8031098 DAC circuit with pseudo-return-to-zero scheme and DAC calibration circuit and method  
In one embodiment, digital-to-analog converter (DAC) circuit includes dual DAC units employing pseudo-return-to-zero DAC operations to reduce inter-symbol interference. Moreover, each DAC unit is...
8031096 High resolution delta-sigma digital-to-analog converter  
A circuit for a delta-sigma digital-to-analog converter (DAC) includes a first stage with a delta-sigma noise-shaping loop. The first stage is capable of receiving an input signal, includes a...
8031100 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.