Details

Autor(en) / Beteiligte

• Pehl, M.
• Massier, T.
• Graeb, H.
• Schlichtmann, U.

Titel

A random and pseudo-gradient approach for analog circuit sizing with non-uniformly discretized parameters

Ist Teil von

• 2008 IEEE International Conference on Computer Design, 2008, p.188-193

Ort / Verlag

IEEE

Erscheinungsjahr

2008

Quelle

IEEE Electronic Library Online

Beschreibungen/Notizen

• Many methods for analog circuit sizing are available as commercial, in-house and academic tools. They are based on continuous optimization, e.g., of transistor geometries, although the subsequent layout step requires values on a pre-defined grid. In addition, sizing of transistors for bipolar and RF circuits frequently necessitates the use of multiples of predefined values for the design parameters. This paper presents a novel method for solving this type of discrete optimization problem. An iterative approach is presented, which is based on pseudo-gradients and a randomized calculation of search regions and steps. Experimental comparisons with simulated annealing and a continuous sizing approach with subsequent discretization clearly show the effectivity and efficiency of the presented method.