Timing Selector: Using Transient Switching Dynamics to Solve the Sneak Path Issue of Crossbar Arrays
Abstract
Sneak path current is a fundamental issue and a major roadblock to the wide application of memristor crossbar arrays. Traditional selectors such as transistors compromise the 2D scalability and 3D stack‐ability of the array, while emerging selectors with highly nonlinear current–voltage relations contradict the requirement of a linear current–voltage relation for efficient multiplication by directly using Ohm's law. Herein, the concept of a timing selector is proposed and demonstrated, which addresses the sneak path issue with a voltage‐dependent delay time of its transient switching behavior, while preserving a linear current–voltage relationship for computation. Crossbar arrays with silver‐based diffusive memristors as the timing selectors are built and the operation principle and operational windows are experimentally demonstrated. The timing selector enables large memristor crossbar arrays that can be used to solve large‐dimension real‐world problems in machine intelligence and neuromorphic computing.
Document Details
- Document Type
- Pub Defense Publication
- Publication Date
- Oct 10, 2021
- Source ID
- 10.1002/smsc.202100072
Entities
People
- Can Li
- Fatemeh Kiani
- Jianhua Joshua Yang
- Mark Barnell
- Mingyi Rao
- Navnidhi Upadhyay
- Peng Lin
- Qiangfei Xia
- Qing Wu
- Rivu Midya
- Shiva Asapu
- Wenhao Song
- Ye Zhuo
- Zhongrui Wang
Organizations
- Air Force Office of Scientific Research
- Air Force Research Laboratory
- National Science Foundation
- University of Massachusetts
- University of Southern California