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| Number | Title | Issue Date |
| 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 |
| 7649487 | 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... | 01/19/2010 |
| 7646324 | Pipeline type analog-digital converter having redundant comparator A pipeline type analog-digital converter includes a first to an N-th (N is an integer of not less than 2) stages (101 to 10N) brought into cascade connection and converting an analog signal input from a preceding stage to a digita... | 01/12/2010 |
| 7633423 | Method of and apparatus for reducing settling time of a switched capacitor amplifier A method and apparatus for reducing settling time of a switched capacitor amplifier. The method includes disconnecting first and second capacitors from an amplifier. When the first and second capacitors are disconnected from the amplifier, they are charged by respec... | 12/15/2009 |
| 7612700 | Pipeline type A/D converter apparatus provided with precharge circuit for precharging sampling capacitor In a pipeline type A/D converter apparatus including A/D converter circuit parts connected in cascade with each other and A/D converting a sample hold signal in a pipeline form, each A/D converter circuit part includes a pre-A/D converter circuit for A/D converting ... | 11/03/2009 |
| 7612701 | 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... | 11/03/2009 |
| 7589658 | Analog-to-digital converter with variable gain and method thereof An analog-to-digital converter (ADC) device includes an input terminal to receive an analog signal, an analog component, and control logic. The analog component includes an amplifier having an input and an output and a capacitor network coupled to the input and the ... | 09/15/2009 |
| 7583219 | Method of controlling pipeline analog-to-digital converter and pipeline analog-to-digital converter implementing the same Provided are a pipeline Analog-to-Digital Converter (ADC) without a front-end Sample-and-Hold Amplifier (SHA) and a method of controlling the same. The method includes the steps of: simultaneously sampling, at an ADC and a residual signal generator included in a fir... | 09/01/2009 |
| 7576676 | Analog-to-digital converter using lookahead pipelined architecture and open-loop residue amplifiers 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... | 08/18/2009 |
| 7573417 | Multi-bit per stage pipelined analog to digital converters Various embodiments of the present invention provide systems and circuits that provide for conversion of analog signals to digital signals. For example, various embodiments of the present invention provide pipelined analog to digital converters. Such converters incl... | 08/11/2009 |
| 7570191 | Methods and systems for designing high resolution analog to digital converters Methods and systems for designing a high resolution analog to digital converter (ADC) by eliminating the errors in the ADC stages. An error correction architecture and method eliminate the gain error and settling error of the residue amplifier in a pipelined ADC sta... | 08/04/2009 |
| 7567197 | Cascade comparator and control method thereof A cascade comparator and a control method thereof are provided. By applying multi-phase clock signals to a plurality of comparators when the plurality of comparators are cascaded together so that each comparator is regenerated before the preceding comparator is rese... | 07/28/2009 |
| 7564397 | High slew rate amplifier, analog-to-digital converter using same, CMOS imager using the analog-to-digital converter and related methods An amplifier, which may be used in a pipelined analog-to-digital converter, includes a first amplifier stage driving a second amplifier stage. At least one compensation capacitor is coupled to provide negative feedback through the capacitor from the second amplifier... | 07/21/2009 |
| 7564396 | Signal receiver and mobile communication device for isolating a desired signal that is susceptible to variations in signal power A signal receiver processing circuit for isolating a desired signal from an analog input signal that is susceptible to variations in signal power, e.g. from a radio front end, includes a variable gain amplifier, an analog to digital converter, a digital signal proce... | 07/21/2009 |
| 7561095 | Pipelined analog-to-digital converter having interleaved sample-and-hold circuits coupled in common A semiconductor integrated circuit device provided with a pipeline A-D conversion circuit in which the enhancement of accuracy and the reduction of power consumption are accomplished is provided. The pipeline A-D conversion circuit is connected in series with an inp... | 07/14/2009 |
| 7561094 | Sequential comparison-type AD converter having small size and realizing high speed operation An analog-to-digital converter has a digital-to-analog converter, first, second and third comparators, and a sequential comparison register and control logic circuit. The digital-to-analog converter produces analog signals, the first, second and third comparators co... | 07/14/2009 |
| 7551115 | Systems and methods for pipelined analog to digital conversion Various embodiments of the present invention provide systems and circuits that provide for conversion of analog signals to digital signals. For example, various embodiments of the present invention provide methods for performing analog to digital conversions that in... | 06/23/2009 |
| 7551114 | Reducing power consumption in the early stages of a pipeline sub-ADC used in a time-interleaved ADC A stage of a pipelined ADC used as a sub-ADC in a time-interleaved ADC is operated using a first set of clock signals, with a next stage being operated using a second set of clock signals. The first set and second set of clock signals are designed to cause the start... | 06/23/2009 |
| 7541962 | Pipelined analog-to-digital converters A pipelined analog to digital converter comprises a first ADC stage thatccc receives one of an input voltage and a first residue voltage and a first voltage reference and that generates a first digital signal and a second residue voltage. A second ADC stage receives... | 06/02/2009 |
| 7538709 | 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... | 05/26/2009 |
| 7532146 | Multi-bit pipeline analog-to-digital converter having merged capacitor switching structure Provided is a multi-bit pipeline analog-to-digital converter (ADC) having a merged capacitor switching structure. In a multiplying digital-to-analog converter (MDAC) used in the multi-bit pipeline ADC, switches are connected between the bottom plates of respective d... | 05/12/2009 |
| 7522085 | Pipelined analog to digital converter without input sample/hold The first stage of a plurality of stages in a pipelined analog to digital converter couples its input analog signal to both a first and second sample and hold (S/H). The first S/H output is coupled to the input of a multiplying digital to analog converter (MDAC) of ... | 04/21/2009 |
| 7515086 | Pipelined analog-to-digital converter and method of analog-to-digital conversion A pipelined analog-to-digital converter (ADC) has a multistage structure, and the pipelined ADC includes a plurality of stages that form the multistage structure. Each of the stages includes a sample-and-hold (S/H) circuit, a flash ADC, and a digital-to-analog conve... | 04/07/2009 |
| 7495596 | Multi-channel pipelined signal converter A signal converter such as a multi-channel pipelined signal converter includes a plurality of pipelined signal converters and a decision unit. Each of the pipelined signal converters has a respective plurality of stage cells coupled in series with switched coupling ... | 02/24/2009 |
| 7486216 | Multi-bit pipeline analog-to-digital converter capable of altering operating mode Provided is a multi-bit pipeline analog-to-digital converter (ADC) capable of altering an operating mode. The ADC includes: a sample-and-hold amplifier (SHA) for sampling and holding an input analog voltage; an n+1 number of B-bit flash ADCs for receiving an analog ... | 02/03/2009 |
| 7486217 | A/D converter An A/D converter that supports multi-mode and that can minimize power consumption is provided. A hybrid A/D converter comprises: hybrid stages composed of 1.5-bit A/D converter for pipeline use that convert analogue input signals into digital signals; 1/1.5-bit D/A ... | 02/03/2009 |
| 7482966 | Algorithm analog-to-digital converter Provided is an algorithm analog-to-digital converter (ADC). The algorithm ADC obtains two digital outputs through different capacitor connections for one analog input signal and adds the digital output signals to obtain a final output value, so that a mismatch facto... | 01/27/2009 |
| 7479915 | Comparator architecture A comparator presents a linear load to input signals when providing a comparison output of two input signals. The comparator contains a transistor configured in a source/emitter follower configuration, and operates in the saturation region for substantially the enti... | 01/20/2009 |
| 7477179 | Successive approximation A/D converter comparing analog input voltage to reference voltages An analog-to-digital converter includes a resistance type potential divider, connected between a supply voltage and a ground terminal, for generating plural reference voltages; and plural switches for selecting one of the reference voltages in response to a select s... | 01/13/2009 |
| 7471227 | Method and apparatus for decreasing layout area in a pipelined analog-to-digital converter In accordance with one embodiment, there is provided a pipelined analog-to-digital converter (ADC) device. The pipelined ADC includes a first stage and a second stage. The first and second stages are configured to share a sub-ADC and a sub-digital-to-analog converte... | 12/30/2008 |
| 7456775 | Pipeline analog-to-digital converter capable of sharing comparators A pipeline analog-to-digital converter including: a first conversion module, a second conversion module, at least a comparator, a first switch module and a second switch module. The first conversion module includes a first storage unit and a first multiplying digita... | 11/25/2008 |
| 7456776 | Analog-to-digital converter circuit and signal processing circuit In an analog-to-digital converter circuit of pipeline type configured by cascade-connecting a plurality of analog-to-digital conversion blocks, at least analog-to-digital conversion blocks at an initial stage excluding an analog-to-digital conversion block at a fina... | 11/25/2008 |
| 7450050 | Switched-capacitor reset architecture for opamp An analog digital converter with switched-capacitor reset architecture. The analog to digital converter (ADC) includes a plurality of pipelined stages, each stage including an analog to digital converter comprising a pair of comparators outputting signals to a multi... | 11/11/2008 |
| 7443332 | Time continuous pipeline analog-to-digital converter A Sampled Pipeline Subranging Converter (SPSC) may include at least one stage—e.g. at least the input stage—operating in a time-continuous fashion. In the time continuous input stage, the analog input may be processed in two parallel paths. A lower path may comp... | 10/28/2008 |
| 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 |
| 7432844 | Differential input successive approximation analog to digital converter with common mode rejection A Successive Approximation Routine converter is provided in which a comparator is responsive to an output of a first Digital to Analog Converter, and an output of a second Digital to Analog Converter and to a DAC common mode output reference voltage, and wherein the... | 10/07/2008 |
| 7417575 | High-bandwidth high-gain amplifier A pipelined analog to digital converter comprises a first stage that receives an input voltage, that generates a first sampled digital value and a first residue voltage, and that includes a first amplifier that amplifies the first residue voltage and generates a fir... | 08/26/2008 |
| 7414562 | Analog-to-digital conversion using asynchronous current-mode cyclic comparison An asynchronous cyclic current-mode analog-to-digital converter (ADC) is disclosed. The ADC comprises a plurality of sub-ADCs cascading from the first stage to the last stage, each sub-ADC comprising a current-mode ADC having a digital output, an analog current inpu... | 08/19/2008 |