Patent application number | Description | Published |
20090045993 | CURRENT STEERING DAC - A multi-channel current steering DAC (Digital-to-Analog Converter), for example, a 2-channel current steering DAC, includes a plurality of current sources I | 02-19-2009 |
20090174587 | 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 | 07-09-2009 |
20090184855 | CURRENT STEERING DAC - In a multi-channel current steering DA converter, e.g., a two-channel current steering DA converter, reference current sources Irefa and Irefb that can serve as current mirror sources for current sources Ia and Ib are provided in current source matrices | 07-23-2009 |
20090208179 | Analog video signal generation circuit, analog composite video signal generation method, analog signal synthesizing circuit, analog signal synthesizing method, semiconductor integrated circuit, and video equipment - In an analog video signal generation circuit, an inverting output terminal NDAOUT | 08-20-2009 |
20090309775 | D/A converter and semiconductor integrated circuit including the same - In a current steering D/A converter, a 1LSB current source | 12-17-2009 |
20100007536 | RAPID RECOVERY CIRCUIT - When a semiconductor circuit, in which a stabilizing capacitor | 01-14-2010 |
20100182180 | D/A CONVERTER, DIFFERENTIAL SWITCH, SEMICONDUCTOR INTEGRATED CIRCUIT, VIDEO APPARATUS, AND COMMUNICATION APPARATUS - A D/A converter has a plurality of current sources (IS | 07-22-2010 |
20100253562 | CURRENT STEERING DAC - In a multi-channel current steering DA converter, e.g., a two-channel current steering DA converter, reference current sources Irefa and Irefb that can serve as current mirror sources for current sources Ia and Ib are provided in current source matrices | 10-07-2010 |
20100315276 | 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 | 12-16-2010 |
20110012769 | DIFFERENTIAL SWITCH, D/A CONVERTER, SEMICONDUCTOR INTEGRATED CIRCUIT AND COMMUNICATION APPARATUS - A differential switch circuit includes a first differential switch basic circuit ( | 01-20-2011 |
20110012770 | D/A CONVERTER AND SEMICONDUCTOR INTEGRATED CIRCUIT INCLUDING THE SAME - In a current steering D/A converter, a 1LSB current source | 01-20-2011 |
20110037511 | MULTIPLE SIGNAL SWITCHING CIRCUIT, CURRENT SWITCHING CELL CIRCUIT, LATCH CIRCUIT, CURRENT STEERING TYPE DAC, SEMICONDUCTOR INTEGRATED CIRCUIT, VIDEO DEVICE, AND COMMUNICATION DEVICE - In a multiple signal switching circuit using four input signals IN | 02-17-2011 |
20120007668 | FILTER CIRCUIT, TRANSMISSION FILTER CIRCUIT, SEMICONDUCTOR INTEGRATED CIRCUIT, COMMUNICATION APPARATUS, AND TIMING ADJUSTMENT METHOD FOR FILTER CIRCUIT - A filter circuit includes two parallel digital filters, a DAC, and an LPF. The DAC includes two parallel decoders, a parallel-to-serial converter, a switch driver, and a switch. A PLL circuit supplies a reference clock to the DAC. A frequency divider provided in the DAC divides the frequency of the reference clock by two, and supplies the half frequency clock to a parallel processing section (the two decoders and the parallel-to-serial converter) of the DAC and the two digital filters. This makes it easy to secure a timing margin, permitting use in high-speed communication on the order of several GHz. | 01-12-2012 |
20120292718 | SWITCH DEVICE AND LAYOUT DESIGN METHOD FOR SWITCH DEVICE - A switch device includes a plurality of differential switches formed in a semiconductor substrate. Each of the plurality of differential switches includes first and second differential transistors. The plurality of differential switches are placed in such a manner that the first differential transistors are adjacent to each other and the second differential transistors are adjacent to each other. | 11-22-2012 |
20130148758 | FILTER CIRCUIT, SEMICONDUCTOR INTEGRATED CIRCUIT, COMMUNICATION APPARATUS, SEMICONDUCTOR DEVICE, AND SYSTEM - A filter circuit includes two parallel digital filters, a DAC, and an LPF. The DAC includes two parallel decoders, a parallel-to-serial converter, a switch driver, and a switch. A PLL circuit supplies a reference clock to the DAC. A frequency divider provided in the DAC divides the frequency of the reference clock by two, and supplies the half frequency clock to a parallel processing section (the two decoders and the parallel-to-serial converter) of the DAC and the two digital filters. This makes it easy to secure a timing margin, permitting use in high-speed communication on the order of several GHz. | 06-13-2013 |
20140104088 | DIFFERENTIAL SWITCH DRIVE CIRCUIT AND CURRENT STEERING DIGITAL-TO-ANALOG CONVERTER - A differential switch drive circuit includes a current source, a current control circuit including a pair of transistors having a pair of differential input terminals, a pair of differential output terminals for outputting differential output voltages, and a common connection node connected to the current source, and load elements each connected to a corresponding one of the pair of differential output terminals. Currents flowing through the pair of transistors are controlled so that the sum of currents flowing through the load elements during a steady state of the differential output voltages is different from the sum of currents flowing through the load elements during a transient state of the differential output voltages. | 04-17-2014 |