## Optimal Design of a CMOS Op-Amp via Geometric Programming (1997)

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Venue: | IEEE Transactions on Computer-Aided Design |

Citations: | 63 - 10 self |

### BibTeX

@ARTICLE{Hershenson97optimaldesign,

author = {Maria del Mar Hershenson and Stephen P. Boyd and Thomas H. Lee},

title = {Optimal Design of a CMOS Op-Amp via Geometric Programming},

journal = {IEEE Transactions on Computer-Aided Design},

year = {1997},

volume = {20},

pages = {1--21}

}

### Years of Citing Articles

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### Abstract

We describe a new method for determining component values and transistor dimensions for CMOS operational amplifiers (op-amps). We observe that a wide variety of design objectives and constraints have a special form, i.e., they are posynomial functions of the design variables. As a result the amplifier design problem can be expressed as a special form of optimization problem called geometric programming, for which very efficient global optimization methods have been developed. As a consequence we can efficiently determine globally optimal amplifier designs, or globally optimal trade-offs among competing performance measures such as power, open-loop gain, and bandwidth. Our method therefore yields completely automated synthesis of (globally) optimal CMOS amplifiers, directly from specifications.

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Citation Context ...ed in our method. The model, which we refer to as GP0, is essentially the standard long-channel square law model described in, [3] and [41]. This model can be inadequate for short-channel transistors =-=[70]-=-, [91] in which case better models can be developed that still allow optimization via geometric programming (see the Appendix, Section B). 1) Large-Signal Models: Correct operation of the op-amp requi... |