WANG Shaoxi, FAN Xiaoya, ZHANG Shengbing, HAN Ru. Constraint Symbolization Method for Analog Layout Retargeting with Geometric Programming[J]. Chinese Journal of Electronics, 2014, 23(1): 65-69.
Citation: WANG Shaoxi, FAN Xiaoya, ZHANG Shengbing, HAN Ru. Constraint Symbolization Method for Analog Layout Retargeting with Geometric Programming[J]. Chinese Journal of Electronics, 2014, 23(1): 65-69.

Constraint Symbolization Method for Analog Layout Retargeting with Geometric Programming

Funds: This work is supported by the Natural Science Foundation of Shaanxi (No.2012JQ8048), Basic Research Foundation of Northwestern Polytechnical University (No.JC20110232), Science and Technology Development Program of Shaanxi Province (No.2013K07-04).
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  • Received Date: April 30, 2011
  • Revised Date: July 31, 2012
  • Published Date: January 04, 2014
  • To satisfy the requirements of complex and special analog layout constraints, a constraint symbolization method based on geometric programming for analog layout retargeting is presented in this paper. Our approach is to build symbolic template for layouts, then uses Geometric programming (GP) to achieve new technology design rules, implement device symmetry and matching constraints, and manage parasitics optimization. The GP, a class of non-linear optimization problem, can be transferred or fitted into a convex optimization problem. Therefore, a global optimum solution can be achieved. The symbolizationmethod ensures the layout retargeting automatically. The efficiency and effectiveness of the proposed algorithm, as compared with the other existing methods, are demonstrated by a basic case-study example and a twostage Miller-compensated operational amplifier.
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