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| Number | Title | Issue Date |
| 8094056 | Analog-to-digital converter A lookahead pipelined ADC architecture uses open-loop residue amplifiers with calibration. This approach is able to achieve a high-speed, high-accuracy ADC with reduced power consumption. In one aspect, an ADC pipeline unit includes a plurality of lookahead pipeline... | 01/10/2012 |
| 8018369 | Error correction method and apparatus A switched current source is provided. The switched current source is generally comprised of transistors and resistors, and the source has a high output impedance. Included with the switched current source is an error correction transistor and a resistor that cooper... | 09/13/2011 |
| 8004447 | Successive approximation analog to digital converter and method thereof The configuration of a successive approximation analog to digital converter (ADC) and a method thereof are provided in the present invention. The proposed configuration includes a comparator having an inverting input terminal, a non-inverting input terminal and an o... | 08/23/2011 |
| 8004446 | A/D converter and A/D conversion method An A/D converter which converts an analog input signal into a digital output signal by performing time-divisional parallel processings on the analog input signal using first and second pipeline type unit A/D converters. The A/D converter sets plural unit A/D convert... | 08/23/2011 |
| 7999719 | Multi-stage successive approximation register analog-to-digital converter and analog-to-digital converting method using the same A multi-stage Successive Approximation Register Analog-to-Digital Converter (SAR ADC) and an analog-to-digital converting method using the same are provided. The multi-stage SAR ADC connects small-size and low-power SAR ADCs in multiple stages, thereby reducing a wh... | 08/16/2011 |
| 7978115 | System and method for analog-to-digital conversion A system for converting an analog signal to a digital signal may include a plurality of converter stages. One of the converter stages may include a multiplying digital-to-analog converter (MDAC) and an analog-to-digital subconverter (ADSC). The MDAC may be configure... | 07/12/2011 |
| 7978116 | Apparatus and method for pipelined analog to digital conversion Apparatus and methods for pipelined analog-to-digital conversion are disclosed. In some embodiments, a pipeline analog-to-digital converter includes a plurality of multiplying digital-to-analog converter (MDAC) stages coupled in cascade. At least one of the MDAC sta... | 07/12/2011 |
| 7965217 | Apparatus and method for pipelined analog to digital conversion Apparatus and methods for pipelined analog-to-digital conversion are disclosed. In some embodiments, a pipelined analog-to-digital converter includes a control and correction circuit; and a plurality of MDAC stages. At least one of the MDAC stages includes: an MDAC ... | 06/21/2011 |
| 7932849 | Method for achieving high-speed analog-to-digital conversion without degrading accuracy, and associated apparatus A method for achieving high-speed analog-to-digital conversion without degrading accuracy includes: receiving digital outputs of a plurality of pipelined analog-to-digital converters (ADCs) that perform analog-to-digital conversion on a same analog signal; and perfo... | 04/26/2011 |
| 7928888 | Pipeline time-to-digital converter A pipeline time-to-digital converter (TDC) is provided. The pipeline TDC includes a plurality of TDC cells. Each of the TDC cells includes a delay unit, an output unit and a determination unit. The delay unit receives a first clock signal and a first reference signa... | 04/19/2011 |
| 7928887 | Analog/digital conversion device An disclosed analog/digital conversion apparatus for converting an analog signal into digital data by cycling the analog signal through a fully differential amplifier circuit includes a polarity switching unit configured to switch connection polarities of the fully ... | 04/19/2011 |
| 7924204 | Stage-resolution scalable opamp-sharing technique for pipelined/cyclic ADC An analog-to-digital converter (ADC) for pipelined ADCs or cyclic ADCs is disclosed. The ADC includes at least one pair of two stages connected in series, and the two stages have different bits of resolution. An amplifier is shared by the pair of two stages such tha... | 04/12/2011 |
| 7924205 | Successive approximation type analog/digital converter and operation method of successive approximation type analog/digital converter In a successive approximation-type A/D converter, an S/H circuit samples and holds an analog input voltage. A D/A converter section receives current digital data corresponding to a current search voltage range, and outputs a plurality of comparison voltages based on... | 04/12/2011 |
| 7911369 | Pipelined AD converter A pipelined AD converter (1) includes a plurality of conversion stages (11, 11, . . . ). In each of the conversion stages, an analog-to-digital conversion circuit (101) converts an input voltage (Vin) from the preceding stage to a digital code (... | 03/22/2011 |
| 7907077 | Pipelined A/D converter The present invention aims to provide a pipeline type A/D converter capable of realizing low power consumption while preventing a reduction in feedback factor of an amplifier. One embodiment of the present invention is of a pipeline type A/D converter which converts... | 03/15/2011 |
| 7903017 | Comparator for a pipelined analog-to-digital converter and related signal sampling method A comparator for a pipelined ADC includes a sampling circuit coupled to a plurality of differential input voltages and a plurality of differential reference voltages, for sampling the plurality of differential input voltages according to a first clock signal and sam... | 03/08/2011 |
| 7898452 | Methods and systems for calibrating a pipelined analog-to-digital converter This method increases accuracy of a pipelined analog-to-digital converter comprising a plurality of stages, each stage comprising an analog-to-digital converter (ADC) and a digital-to-analog converter (DAC). The method includes calibrating each the ADC starting from... | 03/01/2011 |
| 7893859 | Converter circuit, analog/digital converter, and method for generating digital signals corresponding to analog signals A charge corresponding to an analog signal Vi is accumulated in first and second capacitors 25, 27, respectively. A digital signal VDIGN having a digital value (D1, D0, for example) corresponding to the analog signa... | 02/22/2011 |
| 7893860 | Successive approximation register analog-digital converter and method of driving the same A successive approximation register (SAR) analog-digital converter (ADC) and a method of driving the same are provided. The SAR ADC includes a first converting unit including a bit capacitor array corresponding to the number of bits and a correction capacitor array,... | 02/22/2011 |
| 7884749 | A/D converting apparatus An A/D converting apparatus includes a first A/D converter to sample an analog input signal having a D/A converter to generate a comparative signal for successive comparison with the analog input signal, a signal generator generate a differential signal between the ... | 02/08/2011 |
| 7884750 | A/D converter and A/D conversion method In an A/D converter provided with an A/D converter circuit 101 for operationally amplifying an input signal and outputting an amplified signal, the A/D converter circuit 101 includes an initial value setting circuit 4a in addition to an a... | 02/08/2011 |
| 7880659 | Pipeline analog-to-digital converter and method of driving the same A pipeline analog-to-digital converter includes a conversion unit receiving an analog input signal and outputting a plurality of digital signals corresponding to quantization values obtained by quantizing the input signal, the conversion unit including a plurality o... | 02/01/2011 |
| 7880660 | Pipelined analog-to-digital converters An analog-to-digital converter including a first stage and a second stage. The first stage receives a first reference voltage and a first analog input voltage, generates a first digital signal by quantizing the first analog input voltage, and generates a first analo... | 02/01/2011 |
| 7868810 | Amplifier circuit and A/D converter An amplifier circuit includes a current source that is connected between a power supply voltage and an output node and that is turned on when a switching control signal takes a first value and is turned off when the switching control signal takes a second value; a g... | 01/11/2011 |
| 7830293 | Method of cyclically converting an analog signal to a multi-bit digital signal and converter for performing the method Method and arrangement for cyclically AD converting an analog signal with a sampler capacitance and an integrator capacitance, comprising the steps of generating a difference signal multiplied by the ratio of said capacitances from the analog signal and a reference ... | 11/09/2010 |
| 7825846 | Error correction method and apparatus A switched current source is provided. The switched current source is generally comprised of transistors and resistors, and the source has a high output impedance. Included with the switched current source is an error correction transistor and a resistor that cooper... | 11/02/2010 |
| 7817077 | Differential comparator, and pipeline type A/D converter equipped with the same In some examples, a differential comparator includes a differential amplifier configured to output differential output signals, a first switch portion configured to input the differential output signals from the differential amplifier and output the differential out... | 10/19/2010 |
| 7812755 | Signal processor with analog residue In one or more embodiments, an apparatus and method for processing an analog signal into a digital signal includes a quantizer that converts the analog signal, which can have any value within a given range of values, into a fixed set of discrete values. An analog re... | 10/12/2010 |
| 7808417 | Analog-to-digital converter A lookahead pipelined ADC architecture uses open-loop residue amplifiers with calibration. This approach is able to achieve a high-speed, high-accuracy ADC with reduced power consumption. In one aspect, an ADC pipeline unit includes a plurality of lookahead pipeline... | 10/05/2010 |
| 7786920 | Method and device for controlling a successive approximation register analog to digital converter A method for controlling a successive approximation register analog to digital converter comprising connecting a first side of a capacitor to a first comparator input, during a sampling phase connecting the first side of a capacitor to an input and connecting a seco... | 08/31/2010 |
| 7764214 | Analog-to-digital converter for converting input analog signal into digital signal through multiple conversion processings A sub-A-D converter circuit converts a sampled analog signal into a digital signal of a predetermined number of bits. a D-A converter circuit converts the digital signal converted by the sub-A-D converter circuit into an analog signal to generate a residual signal t... | 07/27/2010 |
| 7750834 | Encoder for a pipelined analog-to-digital converter In a pipelined analog-to-digital (AD) converter, if logically incongruent signals S1 and S2 are output from an AD converter section of a converter stage of the AD converter, a digital-to-analog converter (DAC) section is to be prevented from erroneousl... | 07/06/2010 |
| 7741987 | Dual gate oxide analog circuit architecture with dual voltage supplies and associated method An analog circuit architecture is fabricated with dual gate oxides and dual voltage supplies. In the analog circuit architecture, different kinds of devices/transistors with different gate oxide thicknesses are biased by different voltages, such that advantages of e... | 06/22/2010 |
| 7728751 | Pipelined converter The invention relates to an apparatus comprising a pipelined converter, such as a pipelined ADC. The pipelined converter has a first set of stages and a second set of stages. A clocking circuit is configured to generate a plurality of clocking signals for the pipeli... | 06/01/2010 |
| 7728752 | Residue generators for reduction of charge injection in pipelined converter systems Pipelined converter systems include a plurality of converter stages in which some stages generate and pass a residue signal to a succeeding stage for further conversion. The generation of the residue signal can inject spurious charges into a reference source that is... | 06/01/2010 |
| 7714762 | Method and apparatus for current-mode ADC A current-mode analog-to-digital (IADC) has subnA sensitivity. An IADC cell receives an input current signal and provides an output to a comparator for comparison with an adjustable input reference signal. A digital output signal is generated and an analog output is... | 05/11/2010 |
| 7705763 | A-D convert apparatus Provided is an AD conversion apparatus including a bit selecting section that sequentially selects conversion target bits of the output data, from an upper bit downward; a data control section that outputs comparison data determining a value of the conversion target... | 04/27/2010 |
| 7696918 | A-D convert apparatus Provided is a successive approximation AD conversion apparatus that outputs digital output data corresponding to an analog input signal, including a bit selecting section that selects a conversion target bit sequentially from a highest bit of the output data; a data... | 04/13/2010 |
| 7656340 | Systems and methods for pipelined analog to digital conversion Various embodiments of the present invention provide systems and methods for analog to digital conversion. For example, a pipelined analog to digital converter is disclosed that includes two or more comparators. A first of the comparators is operable to compare an a... | 02/02/2010 |
| 7652611 | Front-end sampling technique for analog-to-digital converters Embodiments of the present invention provide a pipeline ADC front-end sampling structure that provides a continuous time input signal to a flash comparator for sampling. By providing a continuous time input signal to the flash comparator, no delay is introduced from... | 01/26/2010 |
