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Chip trimming circuit and trimming method

A technology of circuit trimming and trimming, applied in logic circuits, electrical components, pulse technology, etc., can solve the problems of increasing the cost of testing, increasing the chip area, increasing the cost of chip manufacturing, and achieving high reliability and circuit area. Small, the effect of improving the trimming efficiency

Active Publication Date: 2021-07-23
深圳利普芯微电子有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When there are many trimming items, the increase of the trimming PAD will lead to an increase in the area of ​​the chip, increasing the manufacturing cost of the chip, and also increasing the cost of testing

Method used

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  • Chip trimming circuit and trimming method
  • Chip trimming circuit and trimming method
  • Chip trimming circuit and trimming method

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Embodiment Construction

[0062] The technical solutions of the present application will be clearly and completely described below in conjunction with the embodiments. Apparently, the described embodiments are only some of the embodiments of the present application, not all of them. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without making creative efforts belong to the scope of protection of this application.

[0063] refer to figure 2 As shown, a chip trimming circuit includes:

[0064] 1 trimming lead terminal TRIM, as the trimming PAD of the chip;

[0065] n trimming units are connected to the trimming lead terminal TRIM, and receive the trimming control signal C[n:1], according to the trimming control signal C[n:1], perform fusing or non-fusing trimming in the trimming unit Operation of fuse Fu[m]. Each trimming unit is connected in parallel with the trimming lead terminal TRIM, so that the trimming voltage can be supplied to all tr...

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PUM

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Abstract

The invention discloses a chip trimming circuit and a trimming method, the trimming circuit comprises a trimming lead end and n trimming units, the trimming lead end is used as a trimming PAD of a chip and the n trimming units are jointly connected with the trimming lead wire end, receive the trimming control signal and execute the operation of fusing or not fusing the trimming fuse wire in the trimming unit according to the trimming control signal. According to the invention, a plurality of trimming units share one trimming PAD, so that simultaneous trimming of a plurality of trimming items is realized, and the area of a chip is reduced.

Description

technical field [0001] The application belongs to the technical field of integrated circuits, and in particular relates to a chip trimming circuit and trimming method. Background technique [0002] For integrated circuits, due to the influence of their own distribution, the parameters of the produced chips will have a certain distribution. In applications that require parameter accuracy, it is necessary to use a trimming method to reduce the influence of the distribution and improve the consistency of parameter accuracy to achieve application Require. The current trimming means mainly include electric trimming, etc. The principle of electrical trimming is to apply a voltage at both ends of the trimming fuse, and the current passes through the trimming fuse to generate heat to blow the trimming fuse to achieve the purpose of trimming. Traditional trimming circuits such as figure 1 As shown, the trimming PAD of each trimming item is relatively independent. During the CP test...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H03K19/094
CPCH03K19/094
Inventor 不公告发明人
Owner 深圳利普芯微电子有限公司