Presentation 2011-07-21
A Sense Amplifier with High Speed Pre-Charge Operation for Ultra-Low-Voltage SRAM
Chotaro MASUDA, Tetsuya HIROSE, Yuji OSAKI, Nobutaka KUROKI, Masahiro NUMA,
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Abstract(in English) We propose a current latch sense amplifier with a current-reuse technique (CLSA-w/CR). The CLSA-w/CR is capable of high-speed pre-charging with little increase in power dissipation. The CLSA-w/CR controls body bias voltages of pre-charge transistors in a conventional CLSA. Even though a forward body bias control over MOSFETs can achieve high-speed operation of the circuit, it induces large substrate leakage current and increases the power dissipation of the circuit. The CLSA-w/CR we propose, however, can achieve high-speed precharging without increasing power dissipation. We evaluated the performance of the CLSA-w/CR using SPICE with a set of 0.35- μm standard CMOS parameters. The pre-charge time decreased by 86.9% and the power dissipation increased by only 8.6% compared to that of a conventional CLSA. The CLSA-w/CR showed high-speed pre-charging with small power overhead.
Keyword(in Japanese) (See Japanese page)
Keyword(in English) Sense amplifier / SRAM / Low voltage operation / High speed / Back gate effect
Paper # ICD2011-22
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Committee ICD
Conference Date 2011/7/14(1days)
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Registration To Integrated Circuits and Devices (ICD)
Language JPN
Title (in Japanese) (See Japanese page)
Sub Title (in Japanese) (See Japanese page)
Title (in English) A Sense Amplifier with High Speed Pre-Charge Operation for Ultra-Low-Voltage SRAM
Sub Title (in English)
Keyword(1) Sense amplifier
Keyword(2) SRAM
Keyword(3) Low voltage operation
Keyword(4) High speed
Keyword(5) Back gate effect
1st Author's Name Chotaro MASUDA
1st Author's Affiliation Graduate School of Engineering, Kobe University()
2nd Author's Name Tetsuya HIROSE
2nd Author's Affiliation Graduate School of Engineering, Kobe University
3rd Author's Name Yuji OSAKI
3rd Author's Affiliation Graduate School of Engineering, Kobe University
4th Author's Name Nobutaka KUROKI
4th Author's Affiliation Graduate School of Engineering, Kobe University
5th Author's Name Masahiro NUMA
5th Author's Affiliation Graduate School of Engineering, Kobe University
Date 2011-07-21
Paper # ICD2011-22
Volume (vol) vol.111
Number (no) 151
Page pp.pp.-
#Pages 6
Date of Issue