Patent application number | Description | Published |
20110169340 | 2-PHASE THRESHOLD DETECTOR BASED CIRCUITS - A switched capacitor circuit includes a threshold detector to generate a threshold detection signal when a difference between first and second input signals crosses a predetermined level. A variable current source produces a varying amount of current in response to the difference between the input signals. A voltage measurement means produce a measurement signal in response to the difference between the input signals. A correction means produces a correction signal in response to the measurement signal to produce an optimum coarse phase overshoot. A timing comparison means produces a timing signal in response to the difference between the input signals. A correction means produces a correction signal in response to the timing signal to produce an optimum coarse phase overshoot. | 07-14-2011 |
20120262318 | System and Method for Background Calibration of Time Interleaved Analog to Digital Converters - Various embodiments allow for background calibration of channel-to-channel mismatch errors. | 10-18-2012 |
20120293232 | 2-PHASE THRESHOLD DETECTOR BASED CIRCUITS - A switched capacitor circuit includes a threshold detector to generate a threshold detection signal when a difference between first and second input signals crosses a predetermined level. A coarse current source produces a coarse ramp. A series sampling capacitor samples a coarse output voltage when the threshold detector indicates a first threshold crossing. The sampling capacitor is connected in series with a fine current source producing a fine ramp. | 11-22-2012 |
20140266845 | Buffer Amplifier Circuit - Amplifier circuits implemented with a buffer amplifier with a voltage gain substantially equal to one. In one example, a continuous-time amplifier is implemented by applying the input source across the input and the output terminals of the buffer amplifier. In another example, a discrete-time amplifier is implemented. During the sampling phase at least one input voltage is sampled, and during the transfer phase at least one capacitor is coupled across the input and the output terminals of a buffer amplifier to effectuate an amplification. | 09-18-2014 |
20150222238 | SWITCHED CAPACITOR CIRCUITS HAVING LEVEL-SHIFTING BUFFER AMPLIFIERS, AND ASSOCIATED METHODS - Switched capacitor circuits and charge transfer methods comprising a sampling phase and a transfer phase. Circuits and methods are implemented via a plurality of switches, a set of at least two capacitors, at least one buffer amplifier, and an operational amplifier. In one example, during the sampling phase at least one input voltage is sampled, and during the transfer phase at least a first reference voltage provided by the at least one buffer amplifier is subtracted from the at least one input voltage using the operational amplifier. The same set of at least two capacitors may be used in both the sampling phase and the transfer phase. | 08-06-2015 |
20150263606 | LEVEL-CROSSING BASED CIRCUIT AND METHOD WITH OFFSET VOLTAGE CANCELLATION - A level-crossing based circuit with offset voltage cancellation includes a first level-crossing detector section having a first output capacitor, wherein the first level-crossing section is configured to charge the first output capacitor to a first voltage corresponding to an input signal. The first voltage includes a first offset voltage. The level-crossing based circuit also includes a second level-crossing detector section having a second output capacitor, wherein the second level-crossing detector section is configured to discharge the second output capacitor to a second voltage corresponding to the input signal such that the second voltage includes a second offset voltage that is substantially equal in magnitude to the first offset voltage and opposite in polarity to the first offset voltage relative to an average of the first voltage and the second voltage. | 09-17-2015 |
20150280658 | Buffer Amplifier Circuit - Amplifier circuits implemented with a buffer amplifier with a voltage gain substantially equal to one. In one example, a continuous-time amplifier is implemented by applying the input source across the input and the output terminals of the buffer amplifier. In another example, a discrete-time amplifier is implemented. During the sampling phase at least one input voltage is sampled, and during the transfer phase at least one capacitor is coupled across the input and the output terminals of a buffer amplifier to effectuate an amplification. | 10-01-2015 |
20150357142 | ELECTROMECHANICAL DEVICE - Electromechanical devices described herein may employ tunneling phenomena to function as low-voltage switches. Opposing electrodes may be separated by an elastically deformable layer which, in some cases, may be made up of a non-electrically conductive material. In some embodiments, the elastically deformable layer is substantially free of electrically conductive material. When a sufficient actuation voltage and/or force is applied, the electrodes are brought toward one another and, accordingly, the elastically deformable layer is compressed. Though, the elastically deformable layer prevents the electrodes from making direct contact with one another. Rather, when the electrodes are close enough to one another, a tunneling current arises therebetween. The elastically deformable layer may exhibit spring-like behavior such that, upon release of the actuation voltage and/or force, the separation distance between electrodes is restored. Thus, the electromechanical device may be actuated between open and closed switch positions. | 12-10-2015 |