Layout structure of analog-digital converter of charge coupled production line

Abstract

The invention provides a layout structure of an analog-digital converter of a charge coupled production line, wherein a layout comprises a charge coupled sampling-holding circuit layout area, an N+1 level production line sub-level circuit layout area, a digital circuit layout area, a main reference signal generating circuit layout area and a clock signal generating circuit layout area. The chargecoupled sampling-holding circuit layout area and the N+1 level production line sub-level circuit layout area are positioned in the middle positions of the whole layout; the digital circuit layout area is positioned at the upper-right corner of the whole analog-digital converter layout; and the main reference signal generating circuit layout area and the clock signal generating circuit layout areaare positioned on the upper side and the lower side of the analog-digital converter layout. The arrangement of all the layout areas of the analog-digital converter of the charge coupled production line is fixed, and the position layout is reasonable, thereby reducing the interference of digital noise on an analog circuit and further protecting the performance of the analog-digital converter of the charge coupled production line.

Description

technical field [0001] The invention relates to the technical field of integrated circuit layout design, in particular to a layout structure of a charge-coupled pipeline analog-to-digital converter. Background technique [0002] With the continuous development of digital signal processing technology, the digitization and integration of electronic systems is an inevitable trend. However, most signals in reality are continuously changing analog quantities, which need to be transformed into digital signals through analog-to-digital conversion before they can be input into digital systems for processing and control. Therefore, analog-to-digital converters are indispensable in future digital system design. made of. In applications such as broadband communications, digital high-definition television, and radar, systems require analog-to-digital converters with both very high sampling rates and resolutions. Portable terminal products in these application fields require not only h...

AI Technical Summary

Problems solved by technology

[0009] The invention provides a reasonable layout design scheme of the charge-coupled pipeline analog-to-digital converter to solve the problem that the design of the charge-coupled pipeline analog-to-digital converter fails due to unreasonable layout design

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