Real-time reconfigurable subthreshold CMOS perceptron

In this paper, a new, real-time reconfigurable perceptron circuit element is presented. A six-transistor version used as a threshold gate, having a fan-in of three, producing adequate outputs for threshold of T = 1, 2 and 3 is demonstrated by chip measurements. Subthreshold operation for supply voltages in the range of 100-350 mV is shown. The circuit performs competitively with a standard static complimentary metal-oxide-semiconductor (CMOS) implementation when maximum speed and energy delay product are taken into account, when used in a ring oscillator. Functionality per transistor is, to our knowledge, the highest reported for a variety of comparable circuits not based on floating gate techniques. Statistical simulations predict probabilities for making working circuits under mismatch and process variations. The simulations, in 120-nm CMOS, also support discussions regarding lower limits to supply voltage and redundancy. A brief discussion on bow the circuit may be exploited as a basic building block for future defect tolerant mixed signal circuits, as well as neural networks, exploiting redundancy, is included.

TEKNIK OCH TEKNOLOGIER Elektroteknik och elektronik hsv//swe
ENGINEERING AND TECHNOLOGY Electrical Engineering, Electronic Engineering, Information Engineering hsv//eng
complimentary metal-oxide-semiconductor (CMOS)
defect tolerant
nanoscale
perceptron
subthreshold
threshold element
Electrical engineering, electronics and photonics
Elektroteknik, elektronik och fotonik

Oelmann, BengtMittuniversitetet,Institutionen för informationsteknologi och medier (-2013),Electronics design division, STC(Swepub:miun)benoel (författare)
Norseng, Per Andreas (författare)
Berg, Yngvar (författare)
MittuniversitetetInstitutionen för informationsteknologi och medier (-2013) (creator_code:org_t)

Av författaren/redakt...: Aunet, Snorre; Oelmann, Bengt; Norseng, Per And ...; Berg, Yngvar

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