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Comparator applications

About: Comparator applications is a research topic. Over the lifetime, 2518 publications have been published within this topic receiving 26639 citations.


Papers
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Journal ArticleDOI
TL;DR: In this article, an auto zero comparator is proposed to mitigate single event transients (SETs) in a comparator by using auto-zeroing techniques, which can practically eliminate the comparator contribution to single event errors in many mixed signal circuits, such as ADCs.
Abstract: A novel way to mitigate single event transients (SETs) in a comparator by using auto-zeroing techniques is presented Two comparators, a folded cascode comparator and a novel auto-zeroed comparator, are simulated using a current pulse model for a single event strike These simulations show that the novel auto-zeroed comparator transients are never longer in duration than a single auto-zero clock period This compares favorably to a folded cascode comparator sample circuit, whose maximum transient duration is strongly dependent on the differential input voltage and can be four times as long The use of the presented auto zero comparator can practically eliminate the comparator contribution to single event errors in many mixed signal circuits, such as analog-to-digital converters (ADCs)

37 citations

Patent
07 Jun 2007
TL;DR: In this article, a comparator is coupled between a power supply terminal and ground, and the comparator responds to an electrostatic discharge event producing a trigger signal at the comparators output.
Abstract: An electrostatic discharge protection circuit comprises a comparator coupled between a power supply terminal and ground. The comparator responds to an electrostatic discharge event producing a trigger signal at a comparator output. The comparator comprises a first and second current mirror. The first and second current mirrors each comprise a sense device and a mirror device. The mirror devices are coupled in series between the power supply terminal and ground. The first mirror device produces an incident current and the second mirror device receives an absorption current. With a supply voltage on the power supply terminal equal to or greater than a trigger supply voltage, the absorption current exceeds the incident current and produces a trigger signal at the comparator output. The trigger signal activates a shunt device that shunts current from the power supply terminal to ground.

37 citations

Patent
Palara Sergio1
04 Dec 1989
TL;DR: In this paper, a diagnostic circuit consisting of a comparator (11) having a first input (12) connected to the power device (5) and a second input (14), connected to a reference voltage generator (15), is described.
Abstract: The diagnostic circuit comprises a comparator (11) having a first input (12) connected to the power device (5) and a second input (14) connected to a reference voltage generator (15). A signal generator (17) is connected to the output of comparator (11) so as to generate a diagnostic signal when comparator (11) detects a current in the power device which is higher than a preset value corresponding to said reference voltage. Means (16) sensitive to the temperature of the power device act on the reference voltage generator (15) so as to reduce the value of said reference voltage in response to an increase in the temperature beyond a preset limit.

37 citations

Patent
Kinoshita Osamu1
04 Oct 1991
TL;DR: In this article, the output of a phase comparator is applied to one of the input terminals of a differential amplifier through a low-pass filter, and an error detecting section detects a change in the output due to the change in source voltage and temperature and applies that output change to the other input terminal of the differential amplifier to cancel it out, so that the control voltage of a voltage controlled oscillator is accurately expressed only by a phase difference output acquired by the phase comparators.
Abstract: The present invention designs that the output of a phase comparator (102) is applied to one of the input terminals of a differential amplifier (106) through a low-pass filter (104), and an error detecting section (105) detects a change in the output of the phase comparator (102) due to a change in source voltage and temperature and applies that output change to the other input terminal of the differential amplifier (106) to cancel it out, so that the control voltage of a voltage controlled oscillator (107) is accurately expressed only by a phase difference output acquired by the phase comparator (102).

37 citations

Patent
29 May 1998
TL;DR: In this paper, a differential receiver has a precision input referred offset and a wide CMR, wherein a pair of differential-difference amplifiers are used as differential comparators, each having a common-mode range over a different portion of the rail-to-rail voltage range.
Abstract: A differential receiver having a precision input referred offset and a wide CMR, wherein a pair of differential-difference amplifiers are used as differential comparators. The differential-difference amplifiers are configured to allow a precision input-referred offset to be set by the use of two reference voltages. The differential comparators each have a common-mode range over a different portion of the rail-to-rail voltage range. A first one of these differential comparators is activated when the input common-mode voltage is above a threshold level. A second differential comparator is activated when the input common-mode voltage is below the threshold. The output of the differential comparator that is selected is to provide a comparison output signal, thereby achieving a wide CMR. The selection of either the first or second differential comparator is made by a selection circuit that includes a differential Schmitt Trigger and a multiplexer.

37 citations


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Performance
Metrics
No. of papers in the topic in previous years
YearPapers
202319
202269
20185
201747
201687
2015100