Mismatch compensation in Winner-Take-All (WTA) circuits

Author

Sarje, Anshu ; Abshire, Pamela

Author_Institution

Dept. of Electr. & Comput. Eng., Univ. of Maryland, College Park, MD, USA

fYear

2009

fDate

2-5 Aug. 2009

Firstpage

168

Lastpage

171

Abstract

Winner-take-all (WTA) circuits are commonly used in neuromorphic design for selecting the highest input among a group of alternatives. Device fabrication introduces mismatch in circuits due to random errors in doping as well as errors in physical dimensions. Mismatch biases the circuit and results in incorrect decision making. In this paper, we analyze and characterize behavior of a sub-threshold WTA circuit due to mismatch introduced in the threshold voltage and scaling current of a transistor. Further, we propose two mismatch compensation techniques using floating gate programming. We compare the I-V characteristics before and after compensation in both techniques.

Keywords

VLSI; compensation; integrated circuit design; network analysis; VLSI circuits; floating gate programming; mismatch compensation techniques; neuromorphic design; winner-take-all circuits; Circuits; Computer errors; Decision making; Doping; Educational institutions; Equations; Fabrication; Neuromorphics; Threshold voltage; Very large scale integration;

fLanguage

English

Publisher

ieee

Conference_Titel

Circuits and Systems, 2009. MWSCAS '09. 52nd IEEE International Midwest Symposium on

Conference_Location

Cancun

ISSN

1548-3746

Print_ISBN

978-1-4244-4479-3

Electronic_ISBN

1548-3746

Type

conf

DOI

10.1109/MWSCAS.2009.5236127

Filename

5236127