The Design Simulation and Layout of Capacitive Sensing Circuit
Date Issued
2007
Date
2007
Author(s)
Huang, Wei-Hao
DOI
zh-TW
Abstract
The purpose of this dissertation is to realize the design and layout of capacitive sensing circuit, and in this case to compare the differences before and after layout. In this dissertation presents the skills and principles of layout, and also the method of designing resistance and capacitor. Furthermore, using guard ring to shield noise effect, and using symmetry to eliminate the noise of differential circuit, at the end of this dissertation is to simulate the relations between variety of capacity as well as output voltage after layout. The circuit after layout has the best resolution which is up to 1fF.
This dissertation is applying 0.35μm Mixed-Signal 2P4M Polycide 3.3/5V manufacture process of TSCM which is provided by NSC Chip Implementation Center. Finally, using Hspice software designed by Synopsys co. to simulate and laker software designed by Springsoft co. to layout.
Subjects
電容感測器
類比積體電路
全差動式感測電路
IC設計
佈局
capacitive sensor
analog integratd circuit
full differential sensing circuit
IC design
layout
Type
thesis
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