Title
Small-Sized Leakage-Controlled Gated Sense Amplifier For 0.5-V Multi-Gigabit Dram Arrays
Abstract
A small-sized leakage-controlled gated sense amplifier (SA) and relevant circuits are proposed for 0.5-V multi-gigabit DRAM arrays. The proposed SA consists of a high-V-T PMOS amplifier and a low-V-T NMOS amplifier which is composed of high-V-T NMOSs and a low-V-T cross-coupled NMOS, and achieves 46% area reduction compared to a conventional SA with a low-V-T CMOS preamplifier. Separation of the proposed SA and a data-line pair achieves a sensing time of 6 ns and a writing time of 0.6 ns. Momentarily overdriving the PMOS amplifier achieves a restoring time of 13 ns. The gate level control of the high-V-T NMOSs and the gate level compensation circuit for PVT variations reduce the leakage current of the proposed SA to 2% of that without the control, and its effectiveness was confirmed using a 50-nm test chip.
Year
DOI
Venue
2012
10.1587/transele.E95.C.594
IEICE TRANSACTIONS ON ELECTRONICS
Keywords
Field
DocType
DRAM, low voltage, sense amplifier, mid-point sensing
Dram,Sense amplifier,Gigabit,Leakage (electronics),Direct-coupled amplifier,Electronic engineering,Low voltage,Engineering,Electrical engineering,Operational amplifier,Differential amplifier
Journal
Volume
Issue
ISSN
E95C
4
1745-1353
Citations 
PageRank 
References 
0
0.34
0
Authors
5
Name
Order
Citations
PageRank
Akira Kotabe1379.67
Riichiro Takemura24426.44
Yoshimitsu Yanagawa3162.95
Tomonori Sekiguchi4173.74
Kiyoo Itoh57823.29