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Class Information
Number: 341/153
Name: Coded data generation or conversion > Analog to or from digital conversion > Digital to analog conversion > Using weighted impedances
Description: Subject matter where the conversion utilizes a network comprising a series of impedances each of which has a value such that the current through it is representative of the value of a particular bit position of the digital input signal and a summing circuit for adding the currents flowing through the impedances to develop a signal representative of the digital input signal.

Patents under this class:
1 2 3 4 5

Patent Number Title Of Patent Date Issued
8659458 Multiple return-to-zero current switching digital-to-analog converter for RF signal generation Feb. 25, 2014
8514116 Method for improving the resolution and for correcting distortions in a sigma-delta modulator, and sigma-delta modulator implementing said method Aug. 20, 2013
8487800 Resistive digital-to-analog conversion Jul. 16, 2013
8456342 Switch sequencing for code-range-specific linearity improvement in digital-to-analog converters Jun. 4, 2013
8416112 Circuitry and method for digital to analog current signal conversion with phase interpolation Apr. 9, 2013
8410966 Current DAC Apr. 2, 2013
8217817 Current switch circuit and D/A converter, semiconductor integrated circuit, and communication device using the same Jul. 10, 2012
8144042 Combinatorial circuit with shorter delay when inputs arrive sequentially and delta sigma modulator using the combinatorial circuit Mar. 27, 2012
8093985 Architecture for a highly accurate DCP Jan. 10, 2012
8094055 Compact digital-to-analog converter Jan. 10, 2012
8085178 Multiplying-adding return to zero digital to analog converter circuit and method Dec. 27, 2011
8013771 Method and apparatus for bandpass digital-to-analog conversion Sep. 6, 2011
8009073 Method and apparatus for generating an analog signal having a pre-determined pattern Aug. 30, 2011
7978109 Output apparatus and test apparatus Jul. 12, 2011
7965212 DAC circuit using summing junction delay compensation Jun. 21, 2011
7928880 Digital analog converter Apr. 19, 2011
7924196 Digital-analog converter Apr. 12, 2011
7924201 Current output type digital-analog conversion circuit, and graphic display device Apr. 12, 2011
7916058 Digital-to-analog converter (DAC) with reference-rotated DAC elements Mar. 29, 2011
7903012 D/A converter and reference voltage circuit including same Mar. 8, 2011
7903016 High power and high frequency gallium nitride based digital to analog converter for direct digital radio frequency power waveform synthesis Mar. 8, 2011
7868808 Phase-locked loop circuitry using charge pumps with current mirror circuitry Jan. 11, 2011
7855670 A-to-D converter Dec. 21, 2010
7847718 Digital-to-analog converter, data driver and display device using same Dec. 7, 2010
7821438 Digital-to-analog converter circuit layout Oct. 26, 2010
RE41831 Class B driver Oct. 19, 2010
7796073 Current switch circuit and D/A converter, semiconductor integrated circuit, and communication device using the same Sep. 14, 2010
7782236 Current cell circuit in digital-analog converter Aug. 24, 2010
7764210 System and method for converting an input signal Jul. 27, 2010
7760121 Dual data weighted average dynamic element matching in analog-to-digital converters Jul. 20, 2010
7728750 Display panel driver Jun. 1, 2010
7729300 Class-B transmitter and replica transmitter for gigabit ethernet applications Jun. 1, 2010
7719454 Logical current division multiplexing for encoding multiple digital signals May. 18, 2010
7679538 Current-steering type digital-to-analog converter Mar. 16, 2010
7649483 Communication driver Jan. 19, 2010
7623055 Weight level generating method and device utilizing plural weights at different time rates Nov. 24, 2009
7593483 Nonlinear mapping in digital-to-analog and analog-to-digital converters Sep. 22, 2009
7538707 Digital-to-analog converting circuit and digital-to-analog converting method May. 26, 2009
7511647 Dynamic element matching method and device Mar. 31, 2009
7504979 System and method for providing an ultra low power scalable digital-to-analog converter (DAC) architecture Mar. 17, 2009
7495594 D/A converter and liquid crystal display device Feb. 24, 2009
7446683 Digital current source Nov. 4, 2008
7417572 Voltage interpolation in digital-to-analog signal conversion Aug. 26, 2008
7394414 Error reduction in a digital-to-analog (DAC) converter Jul. 1, 2008
7369075 Output circuit, digital/analog circuit and display apparatus May. 6, 2008
7369077 Differential current-steering digital-to-analog converter May. 6, 2008
7348912 High resolution and low consumption digital-to-analog converter Mar. 25, 2008
7345612 Digital-to-radio frequency conversion device, chip set, transmitter, user terminal and data processing method Mar. 18, 2008
7342527 Digital-to-analog converting circuit, data driver and display device Mar. 11, 2008
7342528 Circuit and method for reducing electromagnetic interference Mar. 11, 2008

1 2 3 4 5

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