Matches 201 - 250 out of 521 < 1 2 3 4 5 6 7 8 9 10 11 >
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5856800 Analog-to-digital converter having a high sampling frequency  
A high frequency analog-to-digital converter in which a memory stage receives the result of a series of comparisons of an analog input voltage Vin with a set of reference voltages Vi (where i=0 to...
5847670 Offset voltage compensation for voltage comparators  
A voltage comparator circuit includes a comparator 42 having a first comparison input, a second comparison input and first and second switched current memories 52, 58 (e.g., switched FETs)...
5841389 Two-step parallel A/D converter  
Provided is a two-step parallel A/D converter capable of operating at a higher speed than in the prior art and easily performing correction of upper bit data. An upper limit voltage V H of a...
5835045 Semiconductor device, and operating device, signal converter, and signal processing system using the semiconductor device.  
A reduction in circuit size, an increase in operation speed, and a reduction in power consumption can be attained by a semiconductor device, in which capacitors are connected to multiple input...
5835048 Analog-to-digital converter with improved cell mismatch compensation  
An analog-to-digital converter (ADC) formed on an integrated circuit chip from a plurality of cells includes a differential amplifier having first and second branches. The branches in each cell...
5835046 Analog-to-digital converter for differential signals  
For certain high-speed applications, where high-precision is not required analog-to-digital conversion may be performed by employing several comparators, each having their own offset. Each such...
5831567 Method and signal processing apparatus for generating digital signal from analog signal  
In a signal processing apparatus, an analog signal inputted from, for example, a sensor is amplified by a amplifying circuit and is supplied to N comparing circuits (N is an integer equal to or...
5828330 Analog to digital converter having dynamically controlled non-linear output  
The output of an analog to digital converter is selectively controlled to provide a non-linear response by addition or removal of current from resistors in the ADC reference level resistor ladder...
5818379 Flash analog to digital (A/D) converter with reduced number of comparators  
An N-bit flash A/D converter with a reduced number of comparators is disclosed. The A/D converter includes a reference voltage generator which includes 2 N serially connected resistors, connected...
5815106 Split flash analog to digital converter differential driver  
A high speed differential analog to digital converter (ADC) is provided. The high speed differential ADC includes a driver section, a comparator section and a decoder section. The driver section...
5815107 Current source referenced high speed analog to digitial converter  
An architecture for a high speed analog current to digital voltage converter particularly suited for integrated circuit applications. As preferably implemented, an analog signal of current form and...
5808573 Methods and structure for sampled-data timing recovery with reduced complexity and latency  
Analog-to-digital converter (ADC) output bits are partitioned in a way that simplifies the phase error calculations. The circuit architecture embeds the implementation of the phase error...
5805096 A/D converter with interpolation  
An A/D converter in which an interpolation circuit (15, 16, 17, 18) makes weighted combinations of reference crossing signals (A/Ac,B/Bc) provided by an input circuit (100, 200), so as to obtain an...
5798724 Interpolating digital to analog converter architecture for improved spurious signal suppression  
A digital-to-analog conversion method and interpolating digital-to-analog converter for a data modulation system which reduces the spurious energy content of the output signal by an order of...
5781132 Error correcting decoder  
The magnitudes of an input voltage and individual ones of progressive fractions of a reference voltage are compared to produce first and second output voltages. Each of the elements in a first...
5777513 Voltage amplifier having a large range of variations, and A/D converter comprising such an amplifier  
A voltage amplifier AD comprising two transistors (Q1, Q2) arranged as a differential pair, having collectors which are connected to a positive power supply terminal (VCC) by means of two branches...
5771030 Apparatus and method for driving liquid crystal  
To drive a liquid crystal panel without producing flickering or noise on a screen, an adder circuit 26 adds the noise component of the analog signal detected in a filter 24 to a reference voltage...
5760729 Flash analog-to-digital converter comparator reference arrangement  
A circuit reduces the total number of resistors needed to provide the reference voltages to the plurality of comparators in a flash analog-to-digital converter. In such a circuit, a first string of...
5757303 Multi-bit A/D converter having reduced circuitry  
The A/D converter comprises a resistor series (30), a plurality of first comparators (1) and a plurality of second comparators (2). Resistor series (30) has a plurality of resistors(R) connected in...
5748335 Image reading apparatus with A/D conversion and adjustment thereof  
An image reading apparatus such as a color copying apparatus has a plurality of sensing CCD chips for converting an image of an object into an electrical signal, each sensing CCD chip having a...
5745063 Arrangement for the summation of products of signals  
In a circuit at least one of the signals (u t! or i t!) is transmitted to a signal input of a sigma-delta modulator operated at a first clock frequency (1/T S ) the output of which is connected to...
5739781 Sub-ranging analog-to-digital converter with open-loop differential amplifiers  
A sub-ranging analog to digital converter utilizes open loop differential gain amplifiers and analog switches to implement a pipeline. Each stage of the converter contains two fine range transfer...
5736951 High speed and high accuracy A/D converter  
An analog-to-digital converter comprises the following elements. A reference voltage generation circuit is provided for dividing a reference voltage into a plurality of divided reference voltages...
5736952 Current boost for differential flash analog to digital converter driver  
A high speed differential analog to digital converter (ADC) is provided. The high speed differential ADC includes a driver section, a comparator section and a decoder section. The driver section...
5734342 Analog-to-digital converter for generating a digital N-bit Gray code  
A full-flash N-bit analog-to-digital converter with Gray-code digital output (V out ) comprises only N current sources (CS 1 , CS 2 , CS 3 ) to power the 2 N -1 differential amplifiers connected...
5731776 Analog-to-digital converter  
A ladder resistance (1) consisting of resistance elements (r1, r2, . . . , r8) connected in series with intermediate taps (T1, T2, . . . , T7) interposed is so arranged as to be folded back at its...
5729233 Analog/digital converter using a charge coupled device with poly-gates relatively sized  
An analog-to-digital (A/D) converter using a charge-coupled device (CCD) for converting analog data to digital data, the CCD including a plurality of gates with potential wells, the number of gates...
5726653 Tri-step analog-to-digital converter  
An analog to digital converter for the conversion of an analog input signal to a digital output code is disclosed. The analog to digital converter has a voltage reference generator to create a...
5721548 Analog-to-digital converter for compensating for input bias current of comparator  
An analog-to-digital converter includes a reference voltage generator for dividing a voltage between first and second reference voltages by a plurality of resistors serially connected therebetween...
5706008 High bandwidth parallel analog-to-digital converter  
A new differential ladder/comparator circuit reduces settling time delays in parallel analog to digital converters. A parallel analog-to-digital converter (ADC) includes a pair of differential...
5703588 Digital to analog converter with dual resistor string  
In a dual resistor string digital-to-analog converter, current biasing is used to isolate a first resistor string from a second resistor string. The first resistor string consist of multiple first...
5696508 Comparator-offset compensating converter  
An integrated circuit for converting an analog signal to a digital signal includes a resistor string comprised of a plurality of serially coupled resistors coupled between a high voltage reference...
5684738 Analog semiconductor memory device having multiple-valued comparators and floating-gate transistor  
A semiconductor memory circuit which realizes a source follower having a voltage gain equal to one, a decrease in the time necessary for the source follower to reach its full output voltage....
5684419 n-bit analog-to-digital converter with n-1 magnitude amplifiers and n comparators  
A serial-type A/D converter uses magnitude amplifiers("magamps") and comparators for effecting the conversion of analog signals to Gray scale code signals that are then converted to binary digital...
5684485 Multi-comparison analog-to-digital converters using the interpolation principle  
The disclosure concerns a so-called "auto-zeroing" comparator of two analog input voltages to be compared, and an analog-to-digital converter using a set of auto-zeroing comparators enabling the...
5684486 Flash A/D converter  
A flash A/D converter includes a plurality of master comparators for comparing a plurality of reference voltages and an input analog signal to absorb a current with a constant value from a...
5675341 Current-mode parallel analog-to-digital converter  
An analog-to-digital converter includes first current sources, second current sources, current regulators, and conductive channels, with each conductive channel coupled to a respective first...
5673048 Analog voltage address decoder circuit  
An analog voltage address decoder circuit and stackable voltage comparator circuit are provided. The address decoder circuit has a column decode comparator network made up of a first plurality of...
5673046 Analog-to-digital conversion circuit for use in information reproduction apparatuses  
An A/D conversion circuit for use in an information reproduction apparatus, includes an envelope generator for extracting an upper-side envelope signal and a lower-side envelope signal from a...
5661481 A/D converter using resistor ladder network and method of testing the same  
An A/D converter and a method of testing the same. Resistors R1 to Rn are connected in series between power-supply terminals receiving a high potential and a low potential, respectively. The...
5644312 Rom encoder circuit for flash ADC'S with transistor sizing to prevent sparkle errors  
A MOS ROM architecture which is fast-switching, requires almost no current under static conditions and only small current while switching, does not require a precharge mechanism and exhibits high...
5623265 Flash analog-to-digital converter and method of operation  
A flash analog-to-digital converter (8) is provided which includes a comparator array (10) which provides a thermometer code output THC1 through THC7. A binary search encoder (12) is coupled to the...
5617092 High resolution encoding circuit and process for analog to digital conversion  
An analog-to-digital converter in which an analog input signal is folded by a plurality of folding circuits whose moduli, and hence half folding periods, are mutually prime with respect to one...
5610604 Analog to digital converter providing varying digital resolution  
An analog to digital converter which includes a resistive network for generating a number of first reference voltages related to each other by a first linear relationship and a number of second...
5602551 Analog-to-digital converter with silicon-on-insulator structure  
A converter is provided having a layout which can be easily designed and which requires a small chip area. Four MOS transistors having the same layout are disposed on the same substrate, and a...
5598161 Analog-to-digital converter having reduced circuit area  
In an analog-to-digital converter, a plurality of divided output currents are produced by dividing at a predetermined ratio each of a plurality of comparison output currents that are produced for...
5594438 Analog-to-digital converter  
An analog-to-digital converter circuit is disclosed that is capable of converting both positive and negative analog input signals, and that is capable of operating as either an analog-to-digital...
5592167 Analog-digital converter using current controlled voltage reference  
A current driven span voltage source for use in an analog to digital converter includes a zero reference resistor serially connected with a resistor ladder. A first current source selectively...
5589831 Fully differential flash ADC based on the voltage follower amplifier structure  
A differential flash ADC includes an input follower differential input stage for receiving a differential input signal. The outputs of the differential input stage are coupled to legs of a...
5568149 A/D converter subsystem with half linear buffer amplifier  
Differential signals are linearly amplified in a differential amplifier (16) and provided to a large dynamic range A/D converter (11). The differential amplifier (16) is optimized for linear...
Matches 201 - 250 out of 521 < 1 2 3 4 5 6 7 8 9 10 11 >