A Field Programmable Analog Array Design Based Gm-C Configuration with Improved Transconductor

• Main Authors: Po-Tzang Huang, 黃柏蒼
• Other Authors: Lon-Kou Chang
• Format: Others
• Language: zh-TW
• Published: 2006
• Online Access: http://ndltd.ncl.edu.tw/handle/60494216869081703841

碩士 === 國立交通大學 === 電機與控制工程系所 === 95 === This thesis adopts the continuous-time Gm-C Opamp integrator configuration to implement the Field Programmable Analog Array (FPAA). The basic building block of FPAA is a Configurable Analog Block (CAB), which consists of a tunable transconductor, an operational amplifier (Opamp), programmable capacitor arrays (PCAs), and analog switches. By changing the signal paths of the CABs, FPAA can implement versatile analog function circuits, such as proportional-integral-derivative (PID) controllers as well as the 1st order, 2nd order, or high order filters. This thesis also presents the design of the improved transconductor for FPAA. The linear input range of a transconductor has been enlarged by adding a control circuit. Besides, the gain of the transconductance can be tuned by the programmable current mirror set. The design for chip tapeout verifies the functions of the CAB, primarily consisting of a transconductor, an Opamp, and PCAs. Opearating with a 5V power supply, the maximum linear differential input range of transconductor is 0.9V, and the maximum tunable frequency range is 8MHz. The whole FPAA circuit is designed and fabricated with TSMC 0.35 μm Mixed-Signal 2P4M (5V) process.