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| Number | Title | Issue Date |
| 8159383 | Switched capacitor circuit and pipelined analog-to-digital conversion circuit with the switched capacitor circuit A conversion circuit for converting a differential input signal into an output signal includes an amplifier that has an input terminal and an output terminal; a first capacitor in which, in a first period, a difference voltage of the differential input signal is app... | 04/17/2012 |
| 8154434 | Pipelined A/D converter Multiple stages sequentially convert respective input analog signals to partial digital data. Each stage includes: a partial A/D converter; a partial D/A converter; an adder that adds/subtracts the analog signal from the previous stage and an output from the partial... | 04/10/2012 |
| 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 data; a first D/A conversion circuit adapted to perform D/A conversion o... | 01/10/2012 |
| 8022856 | Successive approximation type A/D converter, method of controlling successive approximation type A/D converter, solid-state imaging device, and imaging apparatus A successive approximation type A/D converter includes: a reference signal generating section generating a reference signal; a comparator comparing an analog signal input thereto with the reference signal and converting the analog signal into a digital signal; and a... | 09/20/2011 |
| 8018370 | Time-multiplexed residue amplifier A system is configured and a method is provided for receiving an input ratio represented by a first input signal and a second input signal, and producing an output ratio represented by a first output signal and a second output signal. The system is constructed and t... | 09/13/2011 |
| 7990303 | Analog-to-digital conversion unit and analog-to-digital converting method thereof An analog-to-digital conversion unit (ADC unit) and an analog-to-digital converting method (ADC method) are provided. The ADC unit has a plurality of sub analog-to-digital converters and an encoding unit. Each of the employed sub analog-to-digital converters is coup... | 08/02/2011 |
| 7924206 | Switched capacitor circuit and pipeline A/D converter There is provided a switched capacitor circuit and a pipeline A/D converter which are capable of suppressing electric power from being increased by utilizing a level-shift capacitor, even in a case where the switched capacitor circuit and the pipeline A/D converter ... | 04/12/2011 |
| 7911370 | Pipeline analog-to-digital converter with programmable gain function A pipeline analog-to-digital converter (ADC) comprises a plurality of pipeline stages is disclosed. The first pipeline stage has programmable gain function. The first pipeline stage includes a sub-analog-to-digital converter (sub-ADC) and a multiplying digital-to-an... | 03/22/2011 |
| 7907078 | Analog-to-digital converter and analog to-digital conversion method An analog-to-digital converter is disclosed. An input signal processor sets a voltage of an input signal as an initial value of a signal voltage Vin, subtracts ½n of an input range from the nth (n is a positive integer) signal voltage based on a comparis... | 03/15/2011 |
| 7889111 | Analog digital converter, A/D conversion stage, method for generating digital signal corresponding to analog signal, and method for generating signal indicating conversion error in the A/D conversion stage A conversion operation B is performed with respect to a sample value R in an A/D conversion stage 101 to generate a conversion result D3, and a sampling operation A is performed with respect to this conversion result D3 in an A/D conversion stag... | 02/15/2011 |
| RE42117 | 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 offset in time from one another, so that at each clock cycle, new data is... | 02/08/2011 |
| 7847720 | Pipelined analog-to-digital converter A pipelined analog-to-digital converter includes at least one multiplying digital-to-analog converter and at least one sub-ADC. The multiplying digital-to-analog converter includes at least one first capacitor, at least one second capacitor, an amplifier, and a plur... | 12/07/2010 |
| 7839318 | Current mode pipelined analog-to-digital converter A pipelined analog-to-digital converter includes a plurality of stages each including a sample-and-hold circuit configured to output an analog signal having a current and a current mode analog-to-digital converter configured to compare the current of the analog sign... | 11/23/2010 |
| 7839319 | High speed parallel procesing digita path for SAR ADC The analog-to-digital for converter (ADC) for converting an analog value into a digital equivalent using a parallel digital data path is disclosed. In one example embodiment, the ADC includes a switched capacitor DAC having an input to receive an analog value via an... | 11/23/2010 |
| 7812756 | Pipeline A/D converter and digital camera In each of a plurality of stages, an input analog signal is quantized, so that a digital signal corresponding to each part of bits is generated. ADA conversion portion generates an analog reference signal based on the digital signal, and a remainder operation portio... | 10/12/2010 |
| RE41730 | Method 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 offset in time from one another, so that at each clock cycle, new data is... | 09/21/2010 |
| RE41519 | 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 offset in time from one another, so that at each clock cycle, new data is... | 08/17/2010 |
| 7675452 | Successive approximation register analog to digital converter with improved immunity to time varying noise An SAR ADC provides increased immunity to noise introduced by time varying noise components provided on reference potentials (VREF). Reference voltage noise contributions are canceled by introducing a reference voltage component to a pair of binary weight... | 03/09/2010 |
| 7598896 | A/D converter with noise cancel function An A/D converter comprises capacitors C1, C2, C3, C4, and C5 coupled via a plurality of switches to a differential input/differential output amplifier 1. The capacitor C5 determines a gain of the amplifier 1. A... | 10/06/2009 |
| 7576677 | Pipeline A/D converter converting analog signal to digital signal A first stage of a pipeline A/D converter is configured to output a sub analog signal at a level within a predetermined output voltage range even if a level of an input analog signal exceeds a predetermined input voltage range. Therefore, as compared with an example... | 08/18/2009 |
| 7528759 | Pipelined analog-to-digital converter One embodiment of the present invention includes a pipelined analog-to-digital converter (ADC) comprising a plurality of pipeline stages. At least one of the plurality of pipeline stages comprises a feedback transistor-follower combination interconnected between a p... | 05/05/2009 |
| 7471229 | Analog-to-digital converter with low latency output path An analog to digital converter system includes at least one stage for providing a first full precision, full latency output and a second output providing a less than full latency, less than full precision coarse level indicator signal. ... | 12/30/2008 |
| 7471228 | Sharing operational amplifier between two stages of pipelined ADC and/or two channels of signal processing circuitry A mechanism for discharging parasitic capacitance at an input of an operational amplifier, which is shared between two stages of a pipelined analog-to-digital converter and/or two channels of signal processing circuitry, before the amplifier configuration of the sta... | 12/30/2008 |
| 7443333 | Single stage cyclic analog to digital converter with variable resolution A converter (200) adapted to convert an analog input signal into a digital output signal includes an analog input terminal (205) for receiving the analog input signal, a Redundant Signed Digit (RSD) stage (210) coupled to the analog input termin... | 10/28/2008 |
| 7436344 | Pipeline A/D converter The present invention provides a pipeline A/D converter having resolution, allowable conversion processing rate and power consumption satisfying the requests of a system incorporating the pipeline A/D converter. The pipeline A/D converter in accordance with the pres... | 10/14/2008 |
| 7414564 | Enhanced-accuracy converter stages for pipelined signal converter systems Converter systems are provided which complement sample capacitors in at least one converter stage with replica capacitors. The replica capacitors are switched to receive replica charges from the analog input signal during the same operational mode in which the sampl... | 08/19/2008 |
| 7408496 | Method, apparatus and system sharing an operational amplifier between two stages of pipelined ADC and/or two channels of signal processing circuitry A mechanism for discharging parasitic capacitance at an input of an operational amplifier, which is shared between two stages of a pipelined analog-to-digital converter and/or two channels of signal processing circuitry. The operational amplifier contains two input ... | 08/05/2008 |
| 7382308 | Reference buffer using current mirrors and source followers to generate reference voltages A reference buffer includes a first current mirror, a second current mirror, a first source follower coupled in series to a branch of the first current mirror and receiving a first initial reference voltage and outputting a first reference voltage, a second source f... | 06/03/2008 |
| 7382302 | A/D converter with voltage generation circuits An A/D converter has a first voltage generation circuit, a second voltage generation circuit, a comparator, first and second switch circuits connected in series between an input terminal of an analog input voltage and an output terminal of the first voltage generati... | 06/03/2008 |
| 7375672 | Analog-to-digital conversion method, analog-to-digital converter, semiconductor device for detecting distribution of physical quantity, and electronic apparatus In an analog-to-digital conversion method for converting a difference signal component representing a difference between a reference component and a signal component in an analog signal to be processed into digital data, in a first process, a signal corresponding to... | 05/20/2008 |
| 7372389 | Analogue to digital converter, and method of analogue to digital conversion Embodiments of the invention provide an analogue to digital converter comprising a dual differential digital to analogue converter (DAC) having first and second digital inputs for first and second digital input signals respectively, and having first and second analo... | 05/13/2008 |
| 7348906 | INL curve correction in a pipeline ADC The present invention relates to a method and system for reducing integral non linearity errors in a pipeline Analog to Digital Converter (ADC). The invention provides in a first embodiment a method comprising the steps of: adding an analog dither signal to the anal... | 03/25/2008 |
| 7345615 | Cyclic multi-bit A/D conversion array and image sensor An A/D conversion array for an image sensor, in which the number of amplifiers and capacitors are decreased, compared with the conventional cyclic type, and a function to cancel the noise generated in the pixel section of the image sensor is provided, so that the ar... | 03/18/2008 |
| 7339512 | Analog-to-digital converter without track-and-hold A system and method for converting an analog signal to a digital signal is provided. The analog to digital conversion is achieved without a dedicated sample-and-hold circuit. An ADC stage, preferably the front-end stage in the case of a pipeline ADC, samples the inp... | 03/04/2008 |
| 7336214 | Analog to digital converter circuit with offset reduction and image sensor using the same An image sensor may be improved by using ADCs that compensate for the effect of comparator input offset on comparator decisions. Offset compensation may be implemented in an ADC by using an amplifier section between the input of the ADC and a comparator section of t... | 02/26/2008 |
| 7330145 | Dual residue pipelined analog-to-digital converter Consistent with an example embodiment, there is dual residue pipelined AD converter comprising a cascade of, preferably balanced, switched capacitor dual residue converter stages for producing from first and second residue input signals one or more digital bits and ... | 02/12/2008 |
| 7310058 | Reducing the time to convert an analog input sample to a digital code in an analog to digital converter (ADC) A stage of a pipeline ADC which uses separate pairs of sampling network and amplifier (in a sample and hold circuit (SHA)) to provide inputs to quantizer (which generates a sub-code) and a switched capacitor network (implementing a DAC, a subtractor and amplificatio... | 12/18/2007 |
| 7289055 | Analog-digital converter with gain adjustment for high-speed operation An input analog signal is fed to an amplifier circuit and an AD converter circuit. The AD converter circuit converts the input analog signal into a digital value of a predetermined number of bits, and outputs the digital value to an encoder (not shown) A DA converte... | 10/30/2007 |
| 7286074 | Semiconductor integrated circuit for communication including analog-to-digital conversion circuit A semiconductor integrated circuit having a built-in A/D conversion circuit which enables, where the A/D conversion circuit is to be built into a semiconductor chip, the required capacitance of the stabilization capacitor to be connected to the output terminals of r... | 10/23/2007 |
| 7283083 | Pipelined analog-to-digital converter with mid-sampling comparison A double-sampled pipeline analog-to-digital conversion (ADC) system and method in which latching of the intrastage digital quantization signals occurs approximately midway the leading and trailing edges of the clock signals. ... | 10/16/2007 |
