Matches 251 - 300 out of 371 < 1 2 3 4 5 6 7 8 >
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5105193 Digital to analogue convertors  
A high-speed digital to analogue convertor includes a matrix of cells each including a current source, in which there are provided local decode circuitry within each cell to bring into operation...
5075677 Voltage-switching d/a converter using p- and n-channel MOSFETs  
In a voltage-switching digital-to-analog converter, each bit is switched by a switching circuit which uses a p-channel MOSFET as a V ref switch and an n-channel MOSFET as an Agnd switch, with a...
5070332 Two-step subranging analog to digital converter  
A subranging analog-to-digital converter (ADC) that comprises a biasing architecture including a single string of transistor current sources used to generate the reference digital-to-analog...
5065159 Digital to analog converter with switching logic minimization  
A plurality of resistors are connected between a source terminal to which a reference voltage is applied and a grounded terminal. A plurality of switches, which constitute a first switch group and...
5055844 Digital to analog converter  
A digital-to-analog converter which has an input terminal for receiving first and second digital signals and a reference voltage generating circuit for establishing a reference voltage at a control...
5023475 IC D-type master/slave flip-flop  
An integrated circuit, D-type master-slave flipflop includes a bistable master element connected between two supply voltage terminals and having a first data input for receiving data. A control...
5021784 Calibrated current source with ripple reduction  
A signal source arrangement includes a group of signal sources calibrated so that each signal source produces an identical unit signal. The unit signals are combined to form the output signal. Each...
5017919 Digital-to-analog converter with bit weight segmented arrays  
A DAC embodied in a CMOS integrated circuit converts a multi-bit digital signal to an analog-current signal. A higher-order portion of the digital signal, e.g., the most significant 5 bits of a...
5008671 High-speed digital-to-analog converter with BiMOS cell structure  
A digital-to-analog converter comprising a set of identical DAC cells each including: (1) a PNP bipolar current source transistor producing a continuous output current (equal values for all DAC...
5005059 Digital-to-analog converting field effect device and circuitry  
A field effect device and circuit suitable for providing an analog output signal having a magnitude which is representative of a digital input code having a sequence of bits. The device includes a...
5001482 BiCMOS digital-to-analog converter for disk drive digital recording channel architecture  
A digital-to-analog converter for use in a timing control loop. The converter includes a plurality of cells, each activated in response to a timing loop control signal. The converter also includes...
5001481 MOS transistor threshold compensation circuit  
A circuit that compensates for threshold voltage variations in a large array of deposited thin film MOS transistors includes a threshold voltage compensation transistor for a subset of the...
4990915 Signal processing device such as a digital filter utilizing redundant binary expression and operating method therefor  
A D/A converter utilizing a redundant binary expression includes a current supplying circuit and a current decreasing circuit operating responsive to each bit in the signal expressed in the...
4990916 Single-supply digital-to-analog converter for control function generation  
A converter for producing the function V out =V bias =V swing (1-2D), in which a DAC is combined with an operational amplifier and (typically) three or four resistors. A function of the voltage...
4989003 Autozeroed set comparator circuitry  
A comparator circuit for operation at video rate signals includes input switches to alternately couple a reference and a signal potential to a summing capacitor. The capacitor is coupled to the...
4978959 Analog to digital converter, a digital to analog converter and an operational amplifier therefor  
An operational amplifier is provided and includes at least two input terminals of one polarity and another input terminal of the opposite polarity. The amplifier includes an amplifying portion...
4967198 Serial-to-parallel analog CCD GaAs device  
A serial-to-parallel analog CCD GaAs device provides high speed A/D or D/A conversion. A high speed analog signal is sampled by shifting the analog data serially into "n" CCD elements. Then a...
4965577 Semiconductor integrated circuit device having a wiring layout to avoid intersections between analog signal wiring layers and digital signal wiring layers  
A semiconductor circuit is constructed of a digital signal input circuit and an analog signal input circuit to be fed with an analog signal through a multiplexer. An analog signal wiring layer to...
4951053 Method and apparatus for switching currents into the summing node of an integrating analog-to-digital converter  
An arrangement of switches and resistors for switching current into the summing node of an integrator uses a pair of switches for each resistor. Each resistor is connected at one end to a reference...
4940981 Dual analog-to-digital converter with single successive approximation register  
A dual successive approximation analog-to-digital converter, including circuitry for generating separate reference voltages for each analog-to-digital converter, is integrated onto a single...
4926176 Self-timing analog-to-digital converting system  
A substantially constant current is divided between two lines in accordance with the relative values of an input voltage and a reference voltage respectively introduced to such lines. The currents...
4918448 Device for extending the resolution of a N-bit resistive digital-to-analog converter to a (N+P)-bit digital-to-analog converter  
A device implemented in a N-bit digital-to-analog converter (DAC) to extend its resolution to N+P bits. The N-bit DAC comprises a resistive string 2 made of 2 N resistive elements R1 to R16. MSB...
4904922 Apparatus for converting between digital and analog values  
Output members in a matrix relationship having x and y inputs respectively receive signals in first and second pluralities cumulatively representing a digital value. These signals are decoded and...
4899151 Apparatus for converting digital values to analog values  
A plurality of members, each constructed to produce a substantially constant current when energized, are disposed electrically in a matrix defined by a plurality of rows and a plurality of columns....
4899154 Flash comparator  
Input and reference voltages are respectively applied to the control elements of first and second transistors. This causes a substantially constant current to be divided between the first and...
4875045 Variable gain encoder apparatus and method  
A variable gain analog to digital compression encoder apparatus and method is operational for `on the fly` gain adjustments without introducing significant distortion or noise in telephone...
4872010 Analog-to-digital converter made with focused ion beam technology  
An analog-to-digital converter 10 employs a series of comparators 12, 14, 16 and 18. Each comparator includes at least one inverter consisting of a CMOS transistor pair including a P-channel...
4845383 High frequency voltage comparator circuit  
A voltage comparator circuit that is useful in A/D converters and D/A converters. The circuit comprises a comparison capacitor, a holding capacitor and input switching transistors. The holding...
4814688 Reference generator  
A reference generator is used in a digital-to-analog converter to provide for a replication of colors in accordance with binary information introduced to the converter. The generator is responsive...
4800365 CMOS digital-to-analog converter circuitry  
A CMOS digital-to-analog converter includes a modified R-2R resistive ladder network connected to 16 pairs of bit switches responsive to the various digital inputs to produce an internal analog...
4768019 Analog-to-digital converter  
An integrating analog-to-digital converter having an operational amplifier serving as an integrator and as a comparator.
4766415 Digital-to-analog converter with temperature compensation  
A digital-to-analog converter with a voltage output includes means for applying a reference voltage, a resistance and switch network for converting a digital input code into an analog output...
4745393 Analog-to-digital converter  
In a serial-parallel A/D converter, at least two sets of comparators are provided for the conversion of the low-order bits and are operated in a cyclic fashion. Since the subsequent input can be...
4739306 Calibrated-weight balance and an analog-to-digital converter in which the balance is employed  
A calibrated-weight balance for converting an electrical analog signal to a binary signal as applicable to flash-type analog-to-digital converters is composed of a bistable multivibrator having two...
4725813 MOS type circuit device  
A MOS type circuit which has a high switching speed and which is free from the substrate bias effect includes a MOS transistor having a source electrode, a back gate region, a drain electrode and a...
4694277 A/D converter  
A dual slope A/D converter with a zero compensation circuit includes a single power source, an integrator, and a MOS switch constituting the zero compensation circuit and adapted to apply an output...
4689607 Bidirectional transconductance amplifier  
An apparatus for converting an input voltage into a related output current, is disclosed and generally comprises: a resistance means in series with the voltage input; first and second double output...
4688018 Multifunction analog-to-digital successive approximation register  
A successive approximation analog-to-digital converter, of the type which successively compares an analog level represented by binary weighted bits with an analog signal and in response thereto...
4686507 Integrated semiconductor circuit  
An integrated semiconductor circuit which contains both a microprocessor as well as an analog-to-digital converter. Two D/A converters are allocated to an A/D converter. One of the D/A converters...
4686511 Subranging analog-to-digital converter with FET isolation circuit between subtraction node and LSB encoder  
A 12 bit, 10 megahertz subranging analog-to-digital converter feeds a sampled analog input signal forward, without delay or attenuation, to a summing node. The sampled analog signal is converted by...
4682149 High resolution pipelined digital-to-analog converter  
A high resolution pipelined digital-to-analog converter is disclosed having at least one switching circuit for conveying charge to at least one conversion capacitor upon receipt of a digital signal...
4667178 Digital to analog converter  
A digital to analog converter is disclosed which can operate with a high accuracy and can be fabricated at a highly integrated structure. The converter comprises a voltage divider circuit dividing...
4667180 Continuous time domain analog-digital converter  
A continuous time domain parallel analog to digital converter is provided for accomplishing the general successive rectification algorithm I out =2│I in │-I ref . One stage of the continuous...
4649372 Analogue to digital converter  
An analogue to digital converter comprises first and second switches (21:26) for sampling alternately first and second analogue signals, respectively, first and second integrators (22:27) which are...
4647903 Successive approximation analog-to-digital converter  
In order to reduce the numbers of resistors and associated switches required in a successive approximation type a-d converter, a resistor-ladder of the d-a converter utilizes a first group of...
4641130 Analog-to-digital converter with scaling of input signal  
A charge-redistribution successive-approximation analog-to-digital converter includes means for scaling an unknown analog input voltage (V IN ) whose maximum rated value is greater than the...
4641131 Circuit arrangement for converting a digital input signal into an analog output signal  
In a circuit arrangement for converting a digital input signal into an analog output signal, comprising a voltage divider chain which, between its ends which are supplied by at least one reference...
4638241 Regulated current supply  
A first semi-conductor has a first threshold voltage and provides a particular voltage drop across it in its saturated state of operation. A second semi-conductor has a second threshold voltage and...
4635038 CMOS-transistor-based digital-to-analog converter  
A digital-to-analog converter for converting a digital signal having a plurality of binary bits into an analog output signal includes an R-2R ladder network forming a plurality of switching cells...
4635037 Analog to digital converter  
An analog to digital converter comprising a data strobe terminal to which a signal is supplied upon the start of the converting operation, a delay circuit having a transistor with controlled...
Matches 251 - 300 out of 371 < 1 2 3 4 5 6 7 8 >