An offset-tolerant current-sampling-based sense amplifier for Sub-100nA-cell-current nonvolatile memory

Meng-Fan Chang,Yu-Fan Lin,Shin-Jang Shen,Hung-Jen Liao,Han-Chao Lai,Chia-En Huang,Yu-Der Chih,Shang-Chi Wu,Ya-Chin King,Hiroyuki Yamauchi,Chorng-Jung Lin,Che-Wei Wu,Chia-Chi Liu

doi:10.1109/isscc.2011.5746284

An offset-tolerant current-sampling-based sense amplifier for Sub-100nA-cell-current nonvolatile memory

Meng-Fan Chang, Yu-Fan Lin + Show 11 more

https://doi.org/10.1109/isscc.2011.5746284

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Publication Date: Feb 1, 2011

Citations: 20

Affiliation: National Tsing Hua University, Taiwan Semiconductor Manufacturing Company (Taiwan), Fukuoka Institute of Technology

#Sense Amplifiers #Bitline + Show 8 more

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Abstract

In this study, the authors propose a new offset tolerant current-sampling-based SA (CSB-SA) to achieve 7x faster read speed than previous SAs for sensing small <i xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">ICELL</i> . A fabricated 90nm 512Kb OTP macro, using the CSB-SA and our CMOS-logic compatible OTP cell, achieves 26ns macro random access time for reading sub-200nA <i xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">lCELL</i> . Measurements also confirmed that this 90nm CSB-SA could achieve sub-100nA sensing.

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