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Hysteresis comparator circuit

A hysteresis comparator, comparator technology, applied in multiple input and output pulse circuits, electrical components, pulse processing and other directions, can solve the problems of reduced reliability, complex circuit structure, metastability, etc., to reduce the complexity , the effect of reducing cost and reducing design difficulty

Active Publication Date: 2020-01-24
FORTIOR TECH SHENZHEN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the instability or jitter of external effects, glitches or metastable states will occur in the adjacent state, which will reduce the reliability of subsequent circuit judgments and even cause erroneous actions.
Most of the solutions to this problem in the related art require multiple comparators, the circuit structure is complicated, and the cost is increased.

Method used

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Embodiment Construction

[0023] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0024] It should be noted that if there are directional indications (such as up, down, left, right, front, back...) in the embodiment of the present invention, the directional indications are only used to explain how to move in a certain posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0025] In addition, if there are descriptions involving "first", "second" an...

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Abstract

The invention discloses a hysteresis comparator circuit which comprises a comparator, a phase inverter, a first impedor, a second impedor, a third impedor, a fourth impedor, a first switch, a second switch, a third switch and a fourth switch. The comparator is used for respectively controlling the on / off of the first switch and the second switch according to the difference between the positive input end and the negative input end of the comparator; and the phase inverter is used for respectively controlling the on / off of the third switch and the fourth switch according to the output of the comparator. According to the technical scheme, the cost of the hysteresis comparator circuit is reduced.

Description

technical field [0001] The invention relates to the field of integrated circuit counting, in particular to a hysteresis comparator circuit. Background technique [0002] A comparator is a commonly used circuit block in integrated circuits. At present, more and more application fields adopt differential input, especially for applications such as sensor bridges. This circuit module needs to be used as a switch in the integrated circuit. When the external application such as pressure, magnetic field, etc. reaches the threshold, the state of the switch From on to off or from off to on. Due to the instability or jitter of external effects, glitches or metastable states will occur in adjacent states, which will reduce the reliability of subsequent circuit judgments and even cause erroneous actions. Most of the solutions to this problem in the related art require multiple comparators, and the circuit structure is complicated, which increases the cost. Contents of the invention ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H03K5/24
CPCH03K5/2481
Inventor 崔瑜强胡术云毕磊毕超
Owner FORTIOR TECH SHENZHEN