Low Noise Operational
Amplifiers
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Department of Electrical and Computer Engineering
ECE 547,
VLSI Design/Layout
Spring 2007
By Guixiong Zhong
Low noise operational
amplifiers have applications in Nanopore-based gene sequencers. In this
project the design, layout, simulation and comparison results of two
different low noise Operational Amplifier (Op-Amp)
structures were accomplished by Cadence. Emphasis has been placed on the
comparison of the Op-Amp performance. These two Op-Amps including a new
structure and a Folded-Cascode structure were designed and laid out for 0.5
µm process. While the literature emphasizes the
reduction of flicker noise, these two structures minimized the flicker
noise and thermal noise simultaneously. Simulation results show that these
two Op-Amps have comparable performance. The project report contains a description
of the project, details of the design and layout, and simulation results.
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Spring
2007,