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| Autori principali: | , |
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| Natura: | Preprint |
| Pubblicazione: |
2021
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| Soggetti: | |
| Accesso online: | https://arxiv.org/abs/2101.07517 |
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| _version_ | 1866910667629395968 |
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| author | Abel, Inga Graeb, Helmut |
| author_facet | Abel, Inga Graeb, Helmut |
| contents | This paper presents a method to automatically synthesize the structure of an operational amplifier. It is positioned between approaches with fixed design plans and a small search space of structures and approaches with generic structural production rules and a large search space with technically impractical structures. The presented approach develops a hierarchical composition graph based on functional blocks that spans a search space of thousands of technically meaningful structure variants for single-output, fully-differential and complementary operational amplifiers. The search algorithm is a combined heuristic and enumerative process. The evaluation is based on circuit sizing with a library of behavioral equations of functional blocks. Formalizing the knowledge of functional blocks in op-amps for structural synthesis and sizing inherently reduces the search space and lessens the number of created topologies not fulfilling the specifications. Experimental results for the three op-amp classes are presented. An outlook how this method can be extended to multi-stage op-amps is given. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2101_07517 |
| institution | arXiv |
| publishDate | 2021 |
| record_format | arxiv |
| spellingShingle | FUBOCO: Structure Synthesis of Basic Op-Amps by FUnctional BlOck COmposition Abel, Inga Graeb, Helmut Systems and Control This paper presents a method to automatically synthesize the structure of an operational amplifier. It is positioned between approaches with fixed design plans and a small search space of structures and approaches with generic structural production rules and a large search space with technically impractical structures. The presented approach develops a hierarchical composition graph based on functional blocks that spans a search space of thousands of technically meaningful structure variants for single-output, fully-differential and complementary operational amplifiers. The search algorithm is a combined heuristic and enumerative process. The evaluation is based on circuit sizing with a library of behavioral equations of functional blocks. Formalizing the knowledge of functional blocks in op-amps for structural synthesis and sizing inherently reduces the search space and lessens the number of created topologies not fulfilling the specifications. Experimental results for the three op-amp classes are presented. An outlook how this method can be extended to multi-stage op-amps is given. |
| title | FUBOCO: Structure Synthesis of Basic Op-Amps by FUnctional BlOck COmposition |
| topic | Systems and Control |
| url | https://arxiv.org/abs/2101.07517 |