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인용수 1
·2025
Asymmetric Voltage Latch Type and Ultra-Low Swing Bitline Sense Amplifiers for Low-Power High-Density 1R1W 8T SRAM in 14 nm FinFET
Giseok Kim, Keonhee Cho, Jisang Oh, Younmee Bae, Mijung Kim, Sangyeop Baeck, Taejoong Song, Seong‐Ook Jung
IF 5.2IEEE Transactions on Circuits and Systems I Regular Papers
초록

We propose two innovative sense amplifiers, the asymmetric voltage latched-type sense amplifier (A-VLSA) and the ultra-low swing bitline sense amplifier (ULS-SA), to enhance read performance and reduce power consumption in the non-hierarchical BL 2-port 8-transistor SRAM (2P-SRAM). A-VLSA minimizes offset voltage through a MOS capacitor-based asymmetric operation, while ULS-SA achieves reduced read power by adopting clipped precharging and a charge-sharing read mechanism without incurring delay penalties. Measurement results demonstrate that A-VLSA (ULS-SA) achieves 63% (37%) and 61% (63%) lower energy-delay product (EDP) at V<sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink"><b>DD</b></sub> = 0.8V and 0.6V, respectively, with a 24% (43%) smaller area compared to the previous pseudo-differential asymmetric current latched-type sense amplifier (A-CLSA). These improvements address key limitations of prior approaches, delivering significant advancements in both power efficiency and read performance, especially under high cell density conditions.

키워드
Static random-access memorySense amplifierLow voltageSwingSense (electronics)Electrical engineeringAmplifierVoltageLow-power electronicsPower (physics)
타입
article
IF / 인용수
5.2 / 1
게재 연도
2025

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