Comparator with adjustable reference voltage

A reference voltage and comparator technology, applied in the field of comparators, can solve problems such as large difference in capacitance ratio, large influence, large offset voltage, etc., and achieve the effect of reducing offset voltage and improving performance
CN101465649AActive Publication Date: 2009-06-24北京中科微知识产权服务有限公司
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
北京中科微知识产权服务有限公司
Publication Date
2009-06-24

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Abstract

The invention provides a comparator with adjustable reference voltage, which is applied to sub digital-analog conversion module design in digital-analog conversion circuits in high-speed pipelines. Based on a traditional capacitive divider comparator with adjustable reference voltage, the invention proposes a pre-chargeable capacitive divider comparator to conveniently adjust the judgment threshold voltage of the comparator. Compared with a traditional capacitive divider comparator with adjustable reference voltage, the pre-chargeable structure reduces the judgment threshold level offset voltage of the comparator, and relieves a series of design difficulties caused by over high or over low judgment threshold voltage in traditional structure.
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Description

technical field

[0001] The invention relates to a comparator with adjustable reference voltage, which is mainly aimed at high-speed and high-precision analog-to-digital conversion circuits and analog front-end interface circuits of various modern communication and signal processing systems. Background technique

[0002] The invention relates to a comparator with adjustable reference voltage, which is mainly aimed at high-speed and high-precision analog-to-digital conversion circuits and analog front-end interface circuits of various modern communication and signal processing systems.

[0003] The rapid development of deep submicron integrated circuit technology and handheld mobile device industry has brought unprecedented prosperity to the global electronics market. Handheld mobile devices include handheld communication entertainment and portable medical equipment, etc., which have a very broad market potential and development prospects. Products with stronger functions and...

Claims

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