Automatic Analog Synthesis Platform for Bio-signal Acquisition System

• Main Authors: Ying-chi Lien, 連映琦
• Other Authors: Chien-Nan Liu
• Format: Others
• Language: zh-TW
• Published: 2014
• Online Access: http://ndltd.ncl.edu.tw/handle/23770665201113556576

碩士 === 國立中央大學 === 電機工程學系 === 102 === The integrated circuits of nowadays have more and more applications. More functionality increases the complexity of circuit design, which also increases the conditions that have to be considered in the design process. In health care application, the bio-signal acquisition system is important to diagnose the diseases. However, because the bio-signals are often very weak, they can be influenced by noise easily and become hard to distinguish. How to reduce the noise impacts on bio-signals is important in bio-system design. In this thesis, an automatic analog synthesis platform is presented to generate the required system from specification to layout with noise consideration. Noise Factor (NF) is introduced in the proposed circuit sizing flow to evaluate the noise impact and guide the optimization toward noise reduction. Finally,with a friendly Graphical User Interface (GUI), the required design and its corresponding layout can be generated in seconds. The whole synthesis platform has been implemented in Linux with the optimization tool CPLEX, incorporating with an automatic layout generation platform implemented with C/C++ and Tcl/Tk on Laker. According to the simulation and chip measurement results, the automatically synthesized OPA can be used in the bio-signal acquisition system successfully. With noise consideration, the overall noise is also greatly reduced in noise simulation.