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402-0803-00L 10 Credits
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Computation in Neuromorphic Analog VLSI Systems (CNS)

Computation in Neuromorphic analog VLSI Systems (CNS)

VVZ CR n/a

Last Updated: 2026-02-05 14:55:14

Abstract

This course covers neuromorphic analog VLSI circuits that are inspired by the structure, function, and plasticity of biological neuronal networks. We discuss the operation of transistors in subthreshold, both static and dynamic linear and nonlinear circuits, and examples of neuromorphic systems. Lectures are accompanied by laboratory sessions on circuit simulation and testing.

Objective

Understanding of the characteristics of neuromorphic circuit elements and their interaction in parallel networks.

Content

Neuromorphic analog circuits are inspired by the structure, function and plasticity of biological neurons and neural networks. Their computational primitives are based on electronic and optical properties of the physical structures in and on the semiconductor substrate. Neuromorphic algorithms typically rely on collective computation in parallel networks. Adaptation, learning and memory are implemented locally at each processing stage within the individual computational elements. Transistors are primarily operated in weak inversion (below threshold), where they exhibit exponential I-V characteristics and low currents. These properties lead to the feasibility of high-density, low-power implementations of functions that are computationally intensive in other paradigms. The high parallelism and connectivity of neuromorphic circuits permit structures with massive feedback without iterative methods and convergence problems and real-time processing networks for high-dimensional signals (e.g. images). Application domains of neuromorphic circuits include detailed real-time simulations of biological neurons and neural networks and the development of autonomous systems in robotics, vehicle guidance, and traffic control. This course covers elementary devices in CMOS and BiCMOS technology (MOS transistor below and above threshold, floating-gate MOS transistor, phototransducers), static circuits (differential pair, current mirror, transconductance amplifiers, multipliers, power-law circuits, resistive networks, etc.), dynamic circuits (linear and nonlinear filters, adaptive circuits), systems (silicon neuron, silicon retina, motion circuits) and an introduction to multi-chip systems. The lectures are accompanied by weekly laboratory sessions on the characterization of neuromorphic circuits, from elementary devices to entire systems.

Resources

Literature

S.-C. Lin et al.: Analog VLSI Circuits and Principles; various publications.

General Information

Language
German
Frequency
Yearly recurring

Examination

Type
session examination
Mode
oral 20 minutes

Course Components

Type Title Time & Place Hours
lecture Computation in Neuromorphic analog VLSI Systems (CNS)
Uni Irchel I35 F51gemeinsam mit Uni Zürich
  • Tue 16:00-18:00
2 h weekly
exercise Computation in Neuromorphic analog VLSI Systems (CNS)
Uni Irchel I35 F51gemeinsam mit Uni Zürich
No time listed 3 h weekly

Offered In