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| Reconfigurable Analog Circuit and Application Design Based on Operational Transconductance Amplifier |
| Ma Wei-wei; Wang You-ren; Shi Yu; Cui Jiang |
| Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China |
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Abstract The conventional coarse-grained reconfigurable analog circuits have bad flexibility, and the reConfigurable Analog Block (CAB) structure is complicated. In order to solve such problems, a new OTA-based reconfigurable analog circuit is presented in this paper. In this circuit scheme, the complexity of CAB is reduced and the CAB utilization rate is increased. To verify the effectiveness, three examples of analog circuit design (a second-order low pass filter, a second-order high pass filter and a low-pass third-order Butterworth filter) are presented. The experimental results indicate that the proposed circuits is effective and feasible, which make a better balance between circuit resources?and functions.
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Received: 18 July 2008
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2009, Vol. 31 
