Systematic Dsign Mthodology for Cscaded SCF Crcuit

• Main Authors: Ning, Chung-Ho, 甯中和
• Other Authors: Kuei-Ann Wen
• Format: Others
• Language: zh-TW
• Published: 1997
• Online Access: http://ndltd.ncl.edu.tw/handle/62950956067803636592

碩士 === 國立交通大學 === 電子工程學系 === 85 === Systematic Design Methodology for Cascaded SCF CircuitStudent: Chung-Ho Ning Adviser: Kuei-Ann Wen Institute of Electronics National Chiao-Tung University Abstract Switched capacitor filter (SCF) has been widely used as an important building block in telecommunication and mixed-mode circuit applications for its highly precision monolithic implementation ability. This thesis would present systematic analysis methods and design methodologies for cascaded SCF circuit in the time, frequency, and z-domain. The design methodologies could provide stable z- domain transfer function, small sensitivities to parameter value variation, small total capacitance, insensitivity to parasitic capacitance, and maximum dynamic range. We also present some new biquad configuration methods and biquad selection criteria for lower capacitor spread in cascaded SCF. We design a useful program that could analysis and synthesis cascaded SCF circuit easily by entry of some restrictions and desired specifications. It could also automatically generate input files for SWITCAP for further simulation and verification. Moreover, it also provides some important information for layout. Using this program, we could easily design a cascaded SCF more efficiently during a short time. The design methodologies have been proved successfully by two design examples. One is used in DTMF receiver. Another design is to implement an FSK decoder. The two designs all have been implement with a 1.2um double poly single metal CMOS technology.