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7616029 Hysteresis-based processing for applications such as signal bias monitors  
In one embodiment of the invention, a bias signal monitor has two signal comparators that compare two (power supply) voltages at two different bias points and a logic circuit that processes the...
7598777 High-speed reduced-output-swing self-biased fully-complementary CMOS comparator with rail-to-rail input common-mode range  
A CMOS comparator having a high-speed reduced-output-swing is provided. The high-speed reduced-output-swing comparator may have a fully complementary CMOS design, be self-biased, and have a...
7592845 Input signal level detection apparatus and method  
A method and an input signal level detection apparatus that correctly detect a level of an input signal while consuming low power apparatus including: a full-wave rectifier outputting a full-wave...
7586342 Programmable amplitude compensation circuit  
According to one exemplary embodiment, an amplitude compensation circuit includes a first composite programmable buffer for receiving a first input signal with a first input amplitude. The...
7586336 Method and circuit for squelch detection in serial communications  
A method, algorithm, architecture, circuits, and/or systems for squelch detection in serial communications are disclosed. In one embodiment, a squelch detector can include: (i) a first comparator...
7579878 High gain, high speed comparator operable at low current  
A comparator includes a differential pair of transistors providing a first amplification stage and receiving inverting and non-inverting input signals. An output transistor is coupled to the...
7579877 Comparator  
A comparator according to one embodiment includes first and second input terminals, first and second output terminals, first and second input inverters, first and second load inverters, and a bias...
7576572 Rail-to-rail comparator with hysteresis  
A comparator, comprising at least one current stage for providing a first current proportional to a difference between first and second comparator inputs, the first current being provided to an...
7576571 Potential comparator and test apparatus  
The potential comparator includes input wires 3 and 4 that input a differential signal output from a test object 2 , a high-threshold side divided-voltage generating section 5 that acquires...
7576570 Signal amplitude detection circuitry without pattern dependencies for high-speed serial links  
Precision amplitude detection circuitry without pattern dependencies is provided that includes rectifier circuitry to output a rectified voltage signal and delay circuitry to send one or more...
7570082 Voltage comparator apparatus and method having improved kickback and jitter characteristics  
A comparator apparatus for comparing a first and a second voltage input includes a pair of cross-coupled inverter devices, including a pull up device and a pull down device, with output nodes...
7560958 Low power comparator with fast propagation delay  
A direct relationship exists between an integrated comparator's propagation delay and the input differential pair's bias current and overdrive voltage. A new method using a pulsed bias scheme for...
7554607 Video signal detection circuit  
A signal detector for detecting and indicating the duration of a signal pulse by comparing the relative polarities of two voltages generated during the two states of the pulsed signal.
7545181 Reduced offset voltage comparator system  
A method for comparing two signal with increased accuracy by using a reduced offset voltage comparator that has a offset zero mode and amplify mode. Additional comparators are used to indicate when...
7535264 Methods and systems for comparing currents using current conveyor circuitry  
Methods and systems are provided for comparing currents. The method includes driving a first current through a first X leg of a first current conveyor circuit and a second current through a second...
7528637 Driver circuit  
A driver circuit for outputting an output signal corresponding to an input signal given to the driver circuit, includes a voltage generating unit for outputting a basic output voltage corresponding...
7514991 High accuracy current mode duty cycle and phase placement sampling circuit  
A duty cycle and phase placement sampling circuit that can be used for high accuracy sampling and correcting the duty cycle and placement of differential clock signals is provided. The duty cycle...
7514966 Fast, low offset ground sensing comparator  
A fast, accurate, low offset comparator may be configured with multiple gain stages. A low gain, low input impedance, and fully differential common-gate amplifier may be configured as a first stage...
7511537 Comparator circuit for reducing current consumption by suppressing glitches during a transitional period  
A comparator circuit for reducing current consumption in a low consumption mode while suppressing the generation of glitches during a transitional period. The comparator circuit includes a...
7501862 Comparator with low offset voltage  
A differential comparator is provided. The comparator receiving two differential signals and generating a comparison result represented by an output signal on one of two output terminals...
7498850 Compensated comparator for use in lower voltage, higher speed non-volatile memory  
Briefly, in accordance with one or more embodiments, an offset compensated comparator is capable of being utilized for higher speed, lower voltage use. The comparator comprises a cross-coupled...
7486103 Switching system capable of reducing noise of output signal  
A switching system capable of reducing the noise of the output signal is provided. The switching system includes a first switch and a second switch, wherein the first switch conducts a first signal...
7468618 Microcode-initiated high speed comparator  
A microcode-initiated high speed comparator in an optical transceiver includes an initialization and control section consisting of various register sets, an analog section with comparator hardware,...
7446549 Semiconductor leakage current detector and leakage current measurement method, semiconductor leakage current detector with voltage trimming function and reference voltage trimming method, and semiconductor integrated circuit thereof  
A semiconductor leakage current detector of the present invention includes a first analog switch which causes a current to be measured to flow or to be cut off, a second analog switch which causes...
7411431 Dual output differential line driver using single current  
Box switches are stacked sharing a common current from power sources. The power sources may be current, voltage or a combination of such sources. In preferred embodiments, the transistor switches...
7394857 Flexible versatile low-cost wireline transmit driver  
A versatile, programmable, low-cost transmit line driver is provided. The line driver includes a digital-to-analog converter that receives a digital input and provides an analog output. The line...
7382166 Signal amplification device  
A signal amplification device which uses inexpensive standard CMOS and yet is capable of high-accuracy threshold setting. An offset voltage generator detects the direct-current level of an input...
7365595 Internal voltage generator  
An internal voltage generator is highly tolerant of electrical parameter changes of transistors occurring due to process deviation. The generator can produce an internal voltage within a short...
7358779 Amplitude compensation circuit with programmable buffers  
According to one exemplary embodiment, an amplitude compensation circuit includes a first composite programmable buffer for receiving a first input signal with a first input amplitude. The...
7336107 Comparator circuit and control method thereof  
This invention provides a comparator circuit which outputs a stable waveform without oscillation even if a gradient of a change of a comparison input signal is small and determines a magnitude of...
7298181 Highest supply selection circuit  
A power supply monitoring circuit that monitors and delivers the highest voltage power supply to an IC system includes a voltage comparator that receives two different power supply voltages, and...
7292083 Comparator circuit with Schmitt trigger hysteresis character  
A circuit and a method are provided to produce a novel comparator with Schmitt trigger hysteresis character. The circuit includes a current source which controls the magnitude of current flow...
7282964 Circuit for detecting transitions on either of two signal lines referenced at different power supply levels  
A transition detect circuit includes: a first input port referenced to a first supply voltage node and a second input port referenced to a second supply voltage node. The circuit simultaneously...
7274221 Comparator circuit  
An improved comparator circuit and associated methods are disclosed. In one embodiment, the comparator circuit comprises two voltage-to-time converter circuits, one for each input voltage to be...
7233174 Dual polarity, high input voltage swing comparator using MOS input transistors  
A differential input comparator circuit comprises an input stage comprising dual polarity input voltages and an output stage adapted to output a differential voltage based on the input voltages,...
7215158 Comparator switching apparatus and method  
An operation switching circuit switches over two comparators, which receives communication data, in accordance with a normal mode and a standby mode of a microcomputer. A delay circuit delays a...
7215157 Small-amplitude differential interface circuit  
First, second and third current generators, and first and second switching devices are provided. Current values of the first and second current generators are equal to each other and a current...
7212042 Below-ground sensor interface amplifier  
A below-ground sensor interface amplifier is powered by no negative supply voltage, but the amplifier nevertheless senses an input voltage signal below ground potential. The amplifier outputs an...
7208980 Comparator with offset compensation  
A differential comparator with reduced offset. The differential comparator includes a first transistor coupled to a first input current and a second transistor coupled to a second input current....
7183812 Stable systems for comparing and converting signals  
Comparator systems are provided that include cross-coupled transistors which respond to a differential network that receives an input signal. The systems further include a control transistor...
7183811 Comparing circuit, comparator, level determining circuit and threshold voltage setting method  
In a comparing circuit, an input signal switching circuit has a first input terminal, a second input terminal, a first output terminal and a second output terminal. The input signal switching...
7170330 Hysteresis comparator circuit  
An input voltage is applied to an inverting input terminal of a comparator having no hysteresis. A first constant voltage is divided by resistors to create a reference voltage. The reference...
7158594 Receivers for controlled frequency signals  
In some embodiments, a receiver includes a first conductor to carry a magnitude encoded controlled frequency signal (CFS) and a second conductor to carry a complementary magnitude encoded...
7138835 Method and apparatus for an equalizing buffer  
A programmable, equalizing buffer is provided having feedback transistors used to vary the transfer function of the equalizing buffer, such that a low pass response of a transmission channel is...
7135893 Comparator circuit  
A comparator circuit that operates over a wide range of input voltage from Vss to Vdd is offered. This comparator circuit includes a first comparator receiving a pair of differential input signals...
7106106 Clocked comparator circuit  
A comparator is provided that compares one or more input signals in a regenerative circuit. One or more switched isolate the signal inputs after regeneration has started but before regeneration has...
7053670 Semiconductor integrated circuit device and semiconductor integrated circuit  
Disclosed herewith is a semiconductor integrated circuit provided with a differential input circuit that can transmit data signals fast to an internal circuit free from distortion of their...
7049857 Asymmetric comparator for low power applications  
A method and structure for comparing an input signal to a reference signal using a comparator comprises a circuit for setting a trip point of a rising edge of an input signal according to a value...
7023244 Voltage detection circuit  
A voltage detection circuit for detecting the voltage level of a first power source. A first transistor includes a first gate, a first source, and a first drain coupled to the first gate. A second...
6985013 Voltage to current converter  
The invention provides a method and apparatus for performing a voltage to current conversion. In particular, the invention provides a voltage to current converter configured to vary its...
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