The chip design of Gm-C based field programmable analog array for signal processing

• Main Authors: Li-Hsun Liu, 劉笠勳
• Other Authors: Lon-Kou Chang
• Format: Others
• Language: zh-TW
• Published: 2004
• Online Access: http://ndltd.ncl.edu.tw/handle/r24qkk

碩士 === 國立交通大學 === 電機與控制工程系所 === 92 === In this thesis, a field programmable analog array (FPAA) appliable for industrial control is presented and analyzed. The whole system is composed of configurable analog blocks (CABs) and interconnection network. Through programming the two circuit groups above, FPAA can be reconfigured to implement many desired analog functions along system level. Each CAB consists of three programmable operational transconductance amplifiers and capacitors. The current mode Gm-C technique is used to increase operating frequency. In this thesis, the strategy used to modify the linearity of tranconductor through negative feedback method is proposed to improve the linearity performace. In addition, a circuit based on frequency tunuing is also considered to obtain the precise ratio of transconductance and capacitance. The proposed CAB is designed to realize a first-order filter with two inputs and one output, so the combination of CABs can implement a more complex high-order filter. Finally, the entire procedure of design is set to match the parameters of TSMC 0.35μm Mixed-Signal 2P4M (3.3/5V) process.