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Voltage peak detection circuit and operating method thereof

A voltage peak, detection circuit technology, applied in AC/pulse peak measurement and other directions, can solve problems such as increased power consumption, large error, etc., to achieve the effects of increased speed, simple structure, and strong practicability

Inactive Publication Date: 2010-07-28
天津南大强芯半导体芯片设计有限公司
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  • Abstract
  • Description
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AI Technical Summary

Problems solved by technology

The detection speed of the voltage peak detection circuit directly determines the maximum speed of the processed signal. To capture the peak value of the high-speed signal, a high-speed voltage peak detection circuit is required. Generally, a large error will occur when the circuit detects a high-speed signal, and it usually needs to be greatly improved. power consumption to increase speed

Method used

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  • Voltage peak detection circuit and operating method thereof
  • Voltage peak detection circuit and operating method thereof
  • Voltage peak detection circuit and operating method thereof

Examples

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Embodiment

[0017] Embodiment: a kind of voltage peak detection circuit (see Figure 2-a ), comprising an input signal Vsig terminal, a power supply voltage VDD terminal, and a voltage peak detection output Vpeak terminal, and is characterized in that it includes a differential amplifier unit, a common source amplifier unit and a source follower unit; wherein, the input terminal of said differential amplifier unit is connected The input signal Vsig terminal, the voltage peak detection output Vpeak terminal, the power supply voltage VDD terminal and the ground, its output terminal is connected to the input terminal of the common source amplifying unit; the input terminal of the said common source amplifying unit is connected to the power supply voltage VDD terminal and ground, and The output end is connected to the input end of the source follower unit; the input end of the source follower unit is connected to the power supply voltage VDD terminal and the ground, and its output end is conne...

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Abstract

The invention relates to a voltage peak detection circuit, comprising a differential amplifying unit, a common-source amplifying unit and a source following unit; and the operating method thereof includes signal acquisition, signal comparison, signal amplification, signal source following output, peak voltage following and recording. The invention has the advantages that: (1) peak of high speed voltage signal can be detected; (2) voltage detuning of circuit is reduced; (3) circuit structure is simple, no extra compensation is required, and practicability is strong.

Description

(1) Technical field: [0001] The invention relates to a voltage detection circuit and its working method, in particular to a voltage peak detection circuit capable of detecting the peak value of a high-speed voltage signal and its working method. (two) background technology: [0002] In the voltage peak detection system, it is necessary to track the voltage signal, capture the peak value of the voltage signal, save it, and provide it to the subsequent processing circuit. The detection speed of the voltage peak detection circuit directly determines the maximum speed of the processed signal. To capture the peak value of the high-speed signal, a high-speed voltage peak detection circuit is required. Generally, a large error will occur when the circuit detects a high-speed signal, and it usually needs to be greatly improved. power consumption to increase speed. (3) Contents of the invention: [0003] The object of the present invention is to design a voltage peak detection cir...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R19/04
Inventor 戴宇杰林鹏程吕英杰张小兴
Owner 天津南大强芯半导体芯片设计有限公司
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