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9041577 
Digitaltoanalogue converter
The invention relates to digitaltoanalog 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 
Digitaltoanalog converter with monotonicity
Systems and methods provide for the control of a fullysegmented digitaltoanalog converter. The selected leadmost current cell of an array in the digitaltoanalog 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 digitaltoanalog converter having weighted current sources
A digital input to a digitaltoanalog 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 
Switchdriving circuit and DAC using the same
A switchdriving circuit and a DigitaltoAnalog Converter (DAC) using the switchdriving circuit are provided. The switchdriving circuit includes a main cell and a reference cell. The main cell... 

8922412 
Bimodal digitaltoanalog conversion
An apparatus relating generally to digitaltoanalog conversion is disclosed. In such an apparatus, a digitaltoanalog 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 analogtodigital converter and a first... 

8860597 
Digital toanalog converter circuitry with weighted resistance elements
Digitaltoanalog converter circuitry is described. The digitaltoanalog 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 toanalog 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 digitaltoanalog converter
An example digitaltoanalog 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 
Digitalanalog conversion apparatus and method
An apparatus and a method for digitalanalog 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 capacitancetovoltage converter circuit configured to be electrically coupled to a microelectromechanical system (MEMS) sensor circuit. The capacitancetovoltage... 

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 returntozero current switching digitaltoanalog converter for RF signal generation
A “multiple returntozero” (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 sigmadelta modulator, and sigmadelta modulator implementing said method
In a method for improving resolution and for correcting distortions for a sigmadelta modulator, a modulator converts an analog input signal into a secondary output digital signal sampled at a... 

8487800 
Resistive digitaltoanalog conversion
Examples of resistive digitaltoanalog converter (RDAC) circuits are provided herein. RDAC circuits may provide an analog output signal derived from an nbit digital input signal. In one example,... 

8456342 
Switch sequencing for coderangespecific linearity improvement in digitaltoanalog converters
A digitaltoanalog 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 digitaltoanalog current signal conversion with phase interpolation. For an nbit digitaltoanalog converter (DAC), the number 2n control bits normally required can be... 

8410966 
Current DAC
A current digitaltoanalog 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 precalculation and having shorter delay is described. The combinatorial circuit uses information available from earlier input signals to precalculate intermediate... 

8094055 
Compact digitaltoanalog converter
A digitaltoanalog converter is disclosed. An example digitaltoanalog 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 
Multiplyingadding return to zero digital to analog converter circuit and method
A digital to analog converter (DAC) method and apparatus employs a multiplyingadding DAC, eliminating digital adder circuitry. Examples are given for multiplying a 3bit binary number by a 2bit... 

8013771 
Method and apparatus for bandpass digitaltoanalog 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 predetermined pattern
A circuit configured to generate an analog signal having a predetermined pattern. The circuit includes a plurality of digitaltoanalog converters. Each of the plurality of digitaltoanalog... 

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 digitaltoanalog 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 lowerside capacitor group coupled to a lowerside common terminal in parallel, an upperside capacitor group... 

7924201 
Current output type digitalanalog conversion circuit, and graphic display device
A current output type digitalanalog conversion circuit which outputs a current signal includes a decoder for decoding higherorder bits of input digital data, a plurality of binary current... 

7924196 
Digitalanalog converter
A parallel digitalanalog converter for the conversion of a plurality of differential digital input signals into a differential analog output signal, including a group of 1bit digitalanalog... 

7916058 
Digitaltoanalog converter (DAC) with referencerotated DAC elements
In accordance with at least some embodiments, an electronic device comprises a digitaltoanalog converter (DAC) having a DAC element array. Referencerotated 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 
Phaselocked loop circuitry using charge pumps with current mirror circuitry
A system and method for performing phaselocked loop is disclosed. The system includes phase frequency detector circuitry, charge pump circuitry having first current mirror circuitry and second... 

7855670 
AtoD converter
A successive approximation type AtoD converter includes a cyclic DtoA converter (11), a comparator (12) for comparing an analog value with an output value of the DtoA converter (11), and... 

7847718 
Digitaltoanalog converter, data driver and display device using same
A digitaltoanalog 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 
Digitaltoanalog converter circuit layout
A digitaltoanalog converter circuit layout includes a ratiometric digitaltoanalog converter. The ratiometric digitaltoanalog converter includes a digital data input, a converter voltage... 

RE41831 
Class B driver
A communication circuit, Ethernet controller card, and method comprises K digitaltoanalog 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 digitalanalog converter
Embodiments relate to a current cell circuit in a digitalanalog converter. According to embodiments, a current cell circuit in a digitalanalog converter may include a current source connected to... 

7764210 
System and method for converting an input signal
A video driver includes a currenttovoltage 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 analogtodigital converters
Methods and systems to provide dynamic element matching (DEM) in multiphase 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 binaryweighted currenttype D/A converter and a source follower with current mirror is provided. The binaryweighted currenttype D/A converter receives n input... 

7729300 
ClassB transmitter and replica transmitter for gigabit ethernet applications
A method and apparatus for a Gigabit Ethernet transceiver that has a ClassB 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 Nbit digital signal at a source. The Nbit digital signal representing a binary value is used to modulate an electrical current by using N... 