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6060915 Charge transfer wideband sample-hold circuit  
A wideband sample-hold circuit is formed with a single diode in a minimum component configuration. A gate circuit comprised of a first capacitor and an impedance element forms a gate pulse, stores...
6057713 Method and apparatus for performing voltage sampling  
Method and apparatus for performing voltage sampling. The present invention addresses the problems encountered when a voltage is applied to a voltage sampling circuit (76). An additional capacitor...
6052000 MOS sample and hold circuit  
A MOS track-and-hold circuit incorporating cancellation of error due to switch feedthrough is described. To eliminate the channel charge feedthrough due to oxide capacitance, a switched capacitor...
6046617 CMOS level detection circuit with hysteresis having disable/enable function and method  
A level detection circuit, such as a Schmitt trigger circuit, has an input threshold voltage which varies depending upon the detection circuit output. The circuit includes a level detection stage,...
6046612 Self-resetting comparator circuit and method  
A comparator circuit and method for comparing first and second inputs. First and second input capacitors are provided for storing first and second voltages indicative of the first and second inputs...
6040732 Switched-transconductance circuit within integrated T-switches  
A switched-transconductance circuit for use in a multiplexer circuit includes integrated T-switches to provide isolation between each of the differential voltage inputs of a transconductance stage...
6037824 Signal input circuit  
In a signal input circuit, an input signal integrating circuit integrates an input signal in only a predetermined integration period. A reference voltage integrating circuit integrates a reference...
6031398 Reduced-feedthrough switch circuit  
The switch circuit has a replica switch connected to a main switch to reduce feedthrough otherwise resulting from parasitic capacitance of the main switch. In operation, the replica switch is...
6031415 Matched filter circuit for spread spectrum communication  
The present invention provides a matched filter circuit available for processing long P/N codes in a small size circuit. A matched filter circuit according to the present invention performs the...
6028459 Track and hold circuit with clamp  
A track-and-hold amplifier circuit capable of increasing hold mode isolation includes an input circuit to buffer an input signal coupled to a switching transistor. A clamping transistor couples to...
6020769 Low voltage sample and hold circuits  
A very low voltage sampling circuit which is capable of a full ranging output when powered with a very low voltage, e.g., of about 1 volt. A pre-charge circuit is combined with a sample and hold...
6016067 Sample-and-hold circuit having reduced amplifier offset effects and related methods  
An integrated circuit sample-and-hold (S/H) circuit includes an amplifier offset compensation circuit for compensating for the D.C. offset of a buffer amplifier. The amplifier offset compensation...
6011414 Arrangement for reducing the effects of capacitive coupling in a control circuit for a switched-mode power supply  
In a switched-mode power supply, when the controller and the switching device are encapsulated together with a heat sink, in which the drain of the switching device is connected to the heat sink,...
6002277 Sample-and-hold circuit having reduced parasitic diode effects and related methods  
An integrated S/H circuit includes a first field-effect transistor (FET) formed on a substrate with a sampling capacitor, and a buffer amplifier having an input connected to the sampling capacitor...
5986497 Interface circuit for capacitive sensor  
An interface circuit for a capacitive sensor capable of outputting a detection signal with high stability and reliability while suppressing to a minimum the influence of offset and temperature...
5986599 Voltage comparator for analog-to-digital converter  
At a sampling operation, an analog signal and an inverted signal thereof are respectively supplied to first and second sampling capacitor elements, DC components of input signals are supplied to...
5982229 Signal processing scheme utilizing oversampled switched capacitor filter  
A novel signal processing scheme comprises a digital to analog converter which is clocked at a first frequency, and a switched capacitor filter which receives input from the digital to analog...
5977803 Capacitance type sensor interface circuit  
In an interface circuit connected to a capacitance type sensor having two sets of capacitors C1 and C2 whose capacitances are varied, this interface circuit is equipped with an OP amplifier A1...
5973518 Low voltage sample and hold circuit  
A sampling circuit which is capable of a full ranging output when powered with very low voltage supplies, e.g., of about 1 volt. A current copier function is added to a sample and hold circuit to...
5965871 Column readout multiplexer for CMOS image sensors with multiple readout and fixed pattern noise cancellation  
An active pixel sensing structure includes an array of pixel unit cells each of which an adapted to alternate between a light sensing mode wherein the cell outputs an image signal and a reset mode...
5963156 Sample and hold circuit and method with common mode differential signal feedback for converting single-ended signals to differential signals  
A sample and hold (S/H) circuit with common mode differential signal feedback for converting single-ended signals to differential signals includes a feedback loop for the input switched capacitor...
5963063 Sample and hold circuit having a waveform shaping circuit  
A waveform shaping circuit free of error in the hold capacitor due to parasitic capacitance of the MOSFET transistor. Waveform shaping circuit 3 has a constitution that it has XSEL signal and SEL...
5963158 Current amplifier and current mode analog/digital converter using the same  
In a current amplifier, a current obtained by holding an input current from an input terminal by a first current sample/hold circuit is added through a connection to a current obtained by inverting...
5959470 Operational amplifier with two sample and hold circuits  
The objective of the present invention is to provide a type of sample-and-hold circuit free of the influence of parasitic capacitors. In the sampling state, charging/discharging are performed for...
5959471 Method and apparatus for reducing the bias current in a reference voltage circuit  
A method for reducing the current consumption of a reference voltage circuit while a synchronous DRAM is in standby power-down mode is provided. The reference voltage is stored on a capacitor...
5952854 Sampling circuit and image display device  
A sampling circuit for sampling an analog signal in accordance with a timing signal includes a sampling switching element having a CMOS configuration. The sampling switching element includes an...
5949250 Two-terminal electrically-reprogrammable programmable logic element  
A non-volatile two terminal programmable logic element and associated methods for charging and discharging are disclosed. The logic element includes one input and one output terminal, a first...
5936437 Analog-to-digital converter with capacitor network  
Link capacitors are used to establish connection between joining-points of coupling capacitors and inverters in an inverter chopper comparator array, in order to reduce injected electric charge...
5929689 Photodetector quiescent current compensation method and apparatus  
In a photodetector amplifier scheme, the invention compensates for variations in photodetector quiescent current by sampling the amplifier output and subtracting a controllable current from the...
5917363 Multiplexed driver system requiring a reduced number of amplifier circuits  
A method (701-717) and apparatus for providing a driver system requiring a reduced number of amplifier circuits. Load driving circuitry (205) is configured to include a single loop amplifier (401)...
5900749 Threshold voltage level generator for time division duplex communications  
A circuit for generating a threshold voltage level from a time division duplex analog data signal. The circuit comprises a sample/hold circuit and an amplifier. The sample/hold circuit is arranged...
5896050 Signal generating circuit and peak detection circuit  
In order to eliminate an erroneous peak detection caused by turn-on characteristics of switches, a signal generating circuit comprises a first switching device for controlling the output of a first...
5874841 Sample-and-hold circuit for a switched-mode power supply  
A sample-and-hold circuit is provided for a switched-mode power supply of the type having a transformer with a primary winding, an auxiliary winding and a secondary winding, with a switching...
5872470 Pipelined sample and hold circuit with correlated double sampling  
A signal sampling circuit for performing correlated double sampling (CDS) of an input signal with a pipelined sample and hold architecture includes a time multiplexed integrating amplifier circuit...
5867045 Signal processor comprising means for holding output signals of image sensors and means for mixing the held signals  
A signal processor with a simplified circuit configuration provides an improved processing speed and can be realized of small size and at inexpensive cost. The signal processor includes signal...
5844431 Low noise low power CMOS correlated double sampler  
An improved CMOS CDS circuit which can operate on 2.7 volts, provides increased noise immunity and can handle a 0.8 volts maximum signal input. The present invention provides internal capacitors to...
5844433 Sample/hold circuit with current mirror circuits  
In a sample/hold circuit, a current switch generates a constant current in response to a control signal. A first current mirror circuit receives the constant current to generate first and second...
5841383 Current mode track and hold circuit  
A current mode track and hold(T/H) circuit is provided having a high degree of accuracy. The current mode T/H circuit includes an input node, and output node, a voltage controlled current source,...
5838176 Correlated double sampling circuit  
A correlated double sampling circuit comprising an input node comprising a first plate of input capacitor and an output node. A first plate of a feedback capacitor is connected to the output node...
5838175 Low distortion track and hold circuit  
A low distortion track-and-hold circuit in which a simple, four-transistor amplifier makes the circuit characteristics independent of the source impedance, and compensates for unequal voltage drops...
5831562 Differential sample and hold circuit with common mode sampling for an analog-to-digital converter  
A full differential sample and hold circuit for an analog to digital converter. The sample and hold circuit samples and holds the differential signal resulting from two input signals. The sample...
5818268 Circuit for detecting leakage voltage of MOS capacitor  
A circuit for detecting leakage voltage of a MOS capacitor, the detecting circuit including a timing control signal generator for generating a timing control signal; a sample/hold circuit for...
5808490 Method and circuit for controlling a bus in system and semiconductor integrated circuit device using the same, wherein the controlling circuit comprises a latch for holding a voltage level on the bus  
A bus to which a bus control circuit and at least one electronic circuit are connected is controlled by a) storing a signal level which is output to the bus when the bus is in an active state, and...
5801555 Correlative double sampling (CDS) device  
There is provided a correlative double sampling (CDS) device which can effectively and efficiently remove noise from video signal. The CDS device includes at least two sample-and-hold circuits for...
5793231 Current memory cell having bipolar transistor configured as a current source and using field effect transistor (FET) for current trimming  
A current memory cell comprises a first bipolar transistor providing a current source and coupled to the emitters of a second and a third bipolar transistor, the latter forming the storage elements...
5786712 Fast differential sample-and-hold circuit  
A fast differential sample-and-hold circuit includes two transistors controlled so as to be turned on or off. The output signal of the circuit is recovered at the terminals of an output capacitor...
5783952 Clock feedthrough reduction system for switched current memory cells  
A current cell for switch current circuits includes first and second MOS transistors connected in series between a constant current source and a reference ground. The first MOS transistor has its...
5777495 Method for the high-linearity copying of voltage  
A device for copying a voltage (Ve) comprises a pair of series-connected MOS transistors, their sources forming a common point. The voltage (Ve) to be copied is applied between the gate of the...
5773998 Switched current circuits  
Circuit blocks for integrating/differentiating input signals in the form of sampled currents include coupled current memories where the second current memory has a plurality of scaled outputs which...
5760616 Current copiers with improved accuracy  
A current copier is disclosed having a reduced transconductance at the output to reduce the corresponding amount of deviation of the current sample. The disclosed current copier may be implemented...
Matches 151 - 200 out of 485 < 1 2 3 4 5 6 7 8 9 10 >