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Multi-channel sampling-tracking-holding equipment and signal sampling method

A track-and-hold, multi-channel technology, used in analog-to-digital converters, electrical components, code conversion, etc., can solve problems such as high cost, high processing speed, and difficulty

Inactive Publication Date: 2018-04-13
成都中宇微芯科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, the sample track and hold circuit with high clock frequency has high requirements on the processing speed of the subsequent analog-to-digital converter, which is costly and difficult

Method used

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  • Multi-channel sampling-tracking-holding equipment and signal sampling method
  • Multi-channel sampling-tracking-holding equipment and signal sampling method
  • Multi-channel sampling-tracking-holding equipment and signal sampling method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0056] This embodiment provides a multi-channel sampling tracking and holding device, including: a power dividing circuit, which is provided with an input terminal and a plurality of output terminals; a multi-channel sampling tracking and holding circuit, which is provided with a plurality of channels, and each channel is provided with a Sampling track-and-hold circuit, each output end of the power dividing circuit is respectively connected with a sub-sampling track-and-hold circuit; the multi-phase clock generation circuit is connected with each sub-sample track-and-hold circuit at the same time, and tracks two adjacent sub-samples Keep the clock signals transmitted by the circuit equally spaced.

[0057] In this embodiment, a slow-wave phase modulation circuit can also be connected in series between each sub-sampling track-and-hold circuit and the multi-phase clock generation circuit, and each sub-sampling track-and-hold circuit and the multi-phase clock generation circuit ar...

Embodiment 2

[0090] This embodiment provides a signal sampling method. The signal sampling method uses the multi-channel sampling tracking and holding device provided in Embodiment 1 to perform signal sampling, including:

[0091] The signal to be collected is divided into multi-channel branch signals to be collected by a power dividing circuit;

[0092]Transmitting each branch signal to be sampled to a multi-channel sampling track-and-hold circuit, wherein one branch signal to be sampled corresponds to a sub-sampling track-and-hold circuit;

[0093] The signal to be sampled of each branch is sampled by a multi-channel sampling track and hold circuit, wherein the clock signal of each sub-sampling track and hold circuit is generated by the same multi-phase clock generation circuit, and the signals to be sampled of two adjacent branches correspond to The clock signals received by the two sub-sampling track-and-hold circuits are equally spaced.

[0094] Specifically, sampling each branch sig...

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Abstract

The invention discloses a multi-channel sampling-tracking-holding equipment, comprising a power division circuit, a multi-channel sampling-tracking-holding circuit and a multi-phase clock generation circuit, wherein the power division circuit is provided with one input end and multiple output ends; the multi-channel sampling-tracking-holding circuit is provided with multiple channels, each channelis provided with a sub-sampling-tracking-holding circuit, and each output end of the power division circuit is separately connected with one sub-sampling-tracking-holding circuit; and the multi-phaseclock generation circuit is simultaneously connected with each sub-sampling-tracking-holding circuit, and clock signals transmitted to the adjacent two sub-sampling-tracking-holding circuits have equal intervals. According to the scheme of the invention, the high-frequency sampling of an original high-speed signal can be realized without increasing the external sampling clock frequency of a chipor without using an external sampling clock of the chip, and high requirements for a subsequently-connected analog-to-digital converter cannot be generated.

Description

technical field [0001] The invention relates to the field of signal sampling, in particular to a multi-channel sampling tracking and holding device and a signal sampling method. Background technique [0002] With the development of high-speed and high-frequency circuits, there are more and more demands for processing high-speed and high-frequency signals, and the demand for chips including high-speed analog-to-digital converters is also increasing, and the sample track and hold circuit is an analog-to-digital converter chip. The performance index of common front-end module circuits directly affects the quantization accuracy of the analog-to-digital converter. High-speed and high-frequency signal processing needs to pass through the sample track and hold circuit first, and then input to the analog-to-digital converter for processing. For high-speed signal sampling, the main solution currently adopted is to increase the sampling clock frequency. Using the latest technological...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H03M1/12
CPCH03M1/1245
Inventor 刘伟李一虎熊永忠
Owner 成都中宇微芯科技有限公司
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