Cryogenic Characterization of Ferroelectric Non-volatile Capacitors
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arXiv
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| Autores principales: | , , , , , , , |
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| Formato: | Preprint |
| Publicado: |
2025
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| _version_ | 1866912675730030592 |
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| author | Vadlamani, Madhav Chakraborty, Dyutimoy Jia, Jianwei Mulaosmanovic, Halid Duenkel, Stefan Beyer, Sven Datta, Suman Yu, Shimeng |
| author_facet | Vadlamani, Madhav Chakraborty, Dyutimoy Jia, Jianwei Mulaosmanovic, Halid Duenkel, Stefan Beyer, Sven Datta, Suman Yu, Shimeng |
| contents | Ferroelectric-based capacitive crossbar arrays have been proposed for energy-efficient in-memory computing in the charge domain. They combat the challenges like sneak paths and high static power faced by resistive crossbar arrays but are susceptible to thermal noise limiting the effective number of bits (ENOB) for the weighted sum. A direct way to reduce this thermal noise is by lowering the temperature as thermal noise is proportional to temperature. In this work, we first characterize the non-volatile capacitors (nvCaps) on a foundry 28 nm platform at cryogenic temperatures to evaluate the memory window, ON state retention as a function of temperature down to 77K, and then use the calibrated device models to simulate the capacitive crossbar arrays in SPICE at lower temperatures to demonstrate higher ENOB (~5 bits) for 128x128 multiple-and-accumulate (MAC) operations. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2510_25040 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Cryogenic Characterization of Ferroelectric Non-volatile Capacitors Vadlamani, Madhav Chakraborty, Dyutimoy Jia, Jianwei Mulaosmanovic, Halid Duenkel, Stefan Beyer, Sven Datta, Suman Yu, Shimeng Emerging Technologies Ferroelectric-based capacitive crossbar arrays have been proposed for energy-efficient in-memory computing in the charge domain. They combat the challenges like sneak paths and high static power faced by resistive crossbar arrays but are susceptible to thermal noise limiting the effective number of bits (ENOB) for the weighted sum. A direct way to reduce this thermal noise is by lowering the temperature as thermal noise is proportional to temperature. In this work, we first characterize the non-volatile capacitors (nvCaps) on a foundry 28 nm platform at cryogenic temperatures to evaluate the memory window, ON state retention as a function of temperature down to 77K, and then use the calibrated device models to simulate the capacitive crossbar arrays in SPICE at lower temperatures to demonstrate higher ENOB (~5 bits) for 128x128 multiple-and-accumulate (MAC) operations. |
| title | Cryogenic Characterization of Ferroelectric Non-volatile Capacitors |
| topic | Emerging Technologies |
| url | https://arxiv.org/abs/2510.25040 |