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A chopper zero stabilization comparison circuit

A comparison circuit, chopper stabilization technology, applied in electrical components, electrical signal transmission systems, instruments, etc., can solve the problems of high power consumption and complex structure, and achieve the effect of preventing the output voltage from being too high and ensuring stability.

Active Publication Date: 2022-07-22
NO 24 RES INST OF CETC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] In view of the above existing problems in the prior art, the present invention proposes a chopper-stabilized zero comparator circuit, which mainly solves the problems of relatively complex structure and high power consumption of the existing comparator circuit

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  • A chopper zero stabilization comparison circuit
  • A chopper zero stabilization comparison circuit
  • A chopper zero stabilization comparison circuit

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Embodiment Construction

[0024] The embodiments of the present invention are described below through specific specific examples, and those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. The present invention can also be implemented or applied through other different specific embodiments, and various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that the following embodiments and features in the embodiments may be combined with each other under the condition of no conflict.

[0025] It should be noted that the drawings provided in the following embodiments are only used to illustrate the basic concept of the present invention in a schematic way, so the drawings only show the components related to the present invention rather than the number, shape and number of compo...

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Abstract

The invention proposes a chopper-stabilized zero comparison circuit, comprising: a working state selection module for selecting to start a sampling or comparison process; a multi-stage comparison / amplification module for comparing a sampled input signal with a reference signal, and Amplify the comparison result; the overload protection module is arranged between the two adjacent comparison / amplification modules to prevent the output of the comparison / amplification module of the previous stage from being overloaded; the present invention has simple structure, low power consumption, and high speed. quick.

Description

technical field [0001] The invention relates to the technical field of analog or analog-digital hybrid integrated circuits, in particular to a chopper-stabilized zero comparison circuit. Background technique [0002] The successive approximation (SAR:Successive-Approximation-Register, successive approximation register) ADC is one of the commonly used ADC structure types. It has simple structure, easy integration and low power consumption, and is widely used in the field of measurement and control. Comparator is a key unit in successive approximation analog-to-digital converter, and its performance will affect the performance of the entire analog-to-digital converter. A comparator is typically used to compare two input signals and generate an output signal that represents the result of the comparison of the two input signals. In order to achieve high-precision applications, the existing comparator circuit has a relatively complex structure, which increases the power consumpt...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H03K5/08H03M1/08H03M1/38
CPCH03K5/08H03M1/08H03M1/38
Inventor 廖望侯江郭亮陈雪苏豪谢向阳刘凡
Owner NO 24 RES INST OF CETC