Matches 201 - 250 out of 485 < 1 2 3 4 5 6 7 8 9 10 >
Match Document Document Title
5754470 Apparatus for programming a voltage within a storage element  
The present invention is an apparatus for storing a voltage level within a storage element such as an EEPROM. The apparatus includes a track and hold circuit that receives the voltage level to be...
5751635 Read circuits for analog memory cells  
Circuits and processes write and read analog signals in non-volatile memory cells such as EPROM and flash EPROM cells. One read circuit process determines a memory cell's threshold voltage by...
5744985 Differential sample-hold circuit  
In a differential sample-hold circuit used in a serial-parallel type A/D conversion circuit containing a current-added type D/A converter, a pair of differential analog input voltages Vin1 and Vin2...
5736878 Low cost, high speed track and hold circuit  
A very fast circuit for tracking an input signal and holding the value for digitization comprises a holding capacitor, two charging circuits connected to either side of the capacitor and extending...
5734276 Circuit and method for reducing distortion in a track and hold amplifier  
Prior art differential track and hold amplifiers produce an error voltage when transitioning from a track mode to a hold mode. An error voltage limits the resolution of a track and hold amplifier....
5731737 Method and apparatus for reducing clock switching noise in continuous time filters  
A method and apparatus for reducing reference frequency signal and/or clock switching noise in self-tuned integrated continuous-time filters. In the master-slave automatic tuning scheme, one or...
5721563 Active matrix liquid crystal drive circuit capable of correcting offset voltage  
An active matrix liquid crystal drive circuit comprising an input-signal storage capacitor for storing an analog input signal, a differential amplifier which alternately presents a first operative...
5714894 Current comparator arrangement  
A current comparator arrangement has first and second inputs (100, 103), an output (105), and cross-coupled transistors (MP1, MP2) which form a latching circuit. The arrangement also includes...
5703608 Signal processing circuit  
A signal processor alternately outputs two input signals to a common output terminal every predetermined period to form a single serial signal. A capacitor for holding the input signal is provided...
5699063 Analog signal input circuitry with an analog-to-digital converter in a semiconductor device  
The analog signal input circuit comprises an analog-to-digital circuit and a conversion error measuring circuit. The conversion error measuring circuit comprises the following elements. A first...
5698999 Sampling and holding device  
There is provided signal node for receiving a signal, a reference node having a reference voltage, an operational amplifier having an input terminal and an output terminal, a first capacitor, and a...
5699421 Telephone answering device with low cost dual tone multi-frequency detector  
A telephone answering device (TAD) includes a remote access mode which is operative responsive to dual tone multi-frequency (DTMF) signals. At least three bandpass filters each receive an input...
5696458 Front end data readout chip  
A multi-channel readout chip is provided in which each channel has an analog section and a digital section. Each channel of the readout chip employs low noise charge amplifiers with self trigger...
5694063 High speed I.sub.DDQ monitor circuit  
A process for determining a quiescent power supply current (I DDQ ) of a device under test (DUT) at a first node. The process includes the steps of providing a reference current to the first node...
5691657 Sample-and-hold circuit including a robust leakage current compensating circuit  
A sample-and-hold circuit comprises an analog signal control circuit for supplying a potential of an input signal to one end of a hold capacitor, a first transistor having a base connected to the...
5644257 Sampling circuit charge management  
The detrimental nonlinear charging currents from an analog input signal through an anti-aliasing filter into a sampling circuit can be minimized by using primary and secondary inputs to the...
5638020 Switched capacitor differential circuits  
A switched capacitor differential circuit switches first and second differential input signals (Vinp1, Vinp2) to respective inputs (A, B) of an operational amplifier (12) via respective first and...
5625304 Voltage comparator requiring no compensating offset voltage  
A method and apparatus is provided for comparing a first input voltage to a second input voltage. In one embodiment of the invention, a first input voltage is transformed into a first current...
5623279 Capacitive load driving circuit including input selection circuit and liquid crystal display device using the driving circuit  
A capacitative load driving circuit is provided in a liquid crystal display device and has an input selection circuit having a wide and effective voltage range of an input signal. The driving...
5614854 Sample/hold circuit having an analog-to-digital converter and a nonvolatile memory for storing hold voltage data in digital form  
A sample/hold circuit which receives a voltage level at the input terminal thereof at a specific timing, and outputs the received voltage level in the form of a hold voltage. The sample/hold...
5606274 Sampling and holding circuit  
An analog input voltage is inputted to a first sample and hold circuit and a second sample and hold circuit is connected to an output of the first sample and hold circuit. The output of the first...
5576645 Sample and hold flip-flop for CMOS logic  
A sample and hold flip-flop that includes a clock buffer circuit responsive to a first clock signal for producing a second clock signal and a third clock signal, wherein the second clock is delayed...
5572155 CCD signal read-out circuit free from ailiasing of high-frequency noises  
A CCD signal read-out circuit is operative, upon receipt of a CCD signal outputted from a CCD, to output an output signal from which a reset noise has been removed through correlated double...
5572154 Circuit and method of sampling an analog signal  
A sample circuit (10) maintains linear operation over frequency. A switchable diode bridge (12) passes the analog input signal when enabled to one terminal of a sample storage capacitor (14). The...
5570048 Sample-and-hold circuit with reduced clock feedthrough  
A sample-and-hold circuit comprises a first buffer stage, a first sampling switch, a sampling capacitor, and a feedback output amplifier for supplying a sampled output signal (Uout). The sampling...
5548242 Waveform shaping circuit  
A waveform shaping circuit shapes a waveform by comparing an output signal generated by an electromagnetic coil in response to a change in an incident magnetic flux to a reference voltage in a...
5534802 Sample and hold circuitry in bipolar transistor technology using a bootstrapping technique  
A sample-and-hold circuit is formed in bipolar transistor technology with the aid of clocked and complementary-clocked bipolar transistors in combination with a holding capacitor whose output...
5532629 Bipolar track and hold circuit  
A track and hold circuit including an input terminal V IN , a first node, a second node and a capacitor C H . A diode D connects between the first node and the input terminal V H . Circuitry...
5519342 Transient digitizer with displacement current samplers  
A low component count, high speed sample gate, and digitizer architecture using the sample gates is based on use of a signal transmission line, a strobe transmission line and a plurality of sample...
5517141 Differential high speed track and hold amplifier  
A differential track and hold amplifier circuit (200) is provided. The track and hold amplifier includes an input transconductance amplifier (212), an output amplifier (111), and a second...
5517139 Non-linear circuit and chaotic neuron circuit using the same  
A non-linear circuit includes a first variable resistor one end of which is applied with an input signal, an amplifier whose inverting input is connected to the other end of the first variable...
5506525 Sampling circuit for analog signals  
A sampling circuit which obtains a level of sampled-and-held signal which is determined with respect to a well-determined reference level V0, even though the input signal is a useful signal...
5506526 Offset-compensated sample and hold arrangement and method for its operation  
Offset-compensated sample and hold arrangement to sample an input signal comprising at least an operational amplifier (A), a first capacitor (C1), a second capacitor (C2), a first switch (S110), a...
5502410 Circuit for providing a voltage ramp signal  
A circuit (10) for generating a voltage ramp signal (V RAMP ) having minimum amplitude variation over a large frequency range has been provided. The circuit includes a comparator (40) for comparing...
5495192 Sample hold circuit  
A sample and hold circuit to reduce hold error when analog data is held and transferred. The circuit includes a plurality of capacitors and inverters for guaranteeing level, selectively holds an...
5481212 Sample-and-hold circuit device  
A sample-and-hold circuit device capable of realizing a high-precision and high-speed operation, in which the output signal is independent of the error signal caused by a MOS transistor. The...
5479120 High speed sampler and demultiplexer  
A high speed sampling demultiplexer based on a plurality of sampler banks, each bank comprising a sample transmission line for transmitting an input signal, a strobe transmission line for...
5479121 Compensating circuit for MOSFET analog switches  
This invention deals with the problem of an error voltage in a MOSFET analog switch sample and hold circuit caused by the turn off charge in the MOSFET analog switch. The invention provides a...
5473278 Filter circuit including a switch circuit inserted between input terminal and RC filter  
A RC filter circuit is disclosed which includes a first time constant circuit composed of a first resistor and a first capacitor, a switch circuit transferring, when conductive, an input signal to...
5473273 Maximum/minimum hold circuit  
A circuit which can be used to hold either the maximum or minimum voltage applied. A comparator compares the input voltage to the previous high or low and a set of two mirror circuits either charge...
5471162 High speed transient sampler  
A high speed sampler comprises a meandered sample transmission line for transmitting an input signal, a straight strobe transmission line for transmitting a strobe signal, and a plurality of...
5469090 Transistor circuit for holding peak/bottom level of signal  
A transistor circuit for detecting and holding a peak or bottom level of an input voltage includes a first transistor connected between a first power line and an output terminal, a capacitor...
5467035 Sample-and-hold circuit  
An input terminal is connected to bases of first and second transistors. Collectors of the first and fourth transistors are connected to a power-source terminal. Collectors of the second and third...
5465093 Analog-to-digital converter  
The present invention discloses an improved analog-to-digital converter. A second sampling circuit samples the voltage difference between an analog signal and a reference voltage, before a first...
5457415 Charge metering sampling circuit and use thereof in TFT/LCD  
A circuit for sampling monotonic input voltage changes and holding an output precisely derived from the sampled input change. The output change may be of the same polarity as the input, or...
5457418 Track and hold circuit with an input transistor held on during hold mode  
A track and hold circuit is disclosed which may be used in high speed analog to digital conversions. The circuit includes a control transistor which keeps the circuit's input transistor in a...
5450028 Discrete-time signal processing system  
A discrete-time signal processing system includes a signal sampling circuit controlled by a sampling signal generator in which a clock signal is derived from an oscillation signal having a higher...
5446375 Reluctance sensor having variable threshold detection circuit  
A reluctance sensor produces reluctance signals in response to passing slots in a rotating wheel. When a given signal exceeds a threshold, a DIG - - OUT signal is produced. When the signal falls to...
5440256 Dual mode track and hold drivers for active LCD'S  
A track and hold signal processing system is capable of driving 256 gray scale active matrix LCD displays at speeds limited only by the electrical characteristics of the display. The quiescent...
5422583 Back gate switched sample and hold circuit  
An improved back gate switched sample and hold circuit includes a sample and hold channel including a sample switch having a back gate and a storage element; a back gate circuit for controlling the...
Matches 201 - 250 out of 485 < 1 2 3 4 5 6 7 8 9 10 >