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Rapid Prototyping of Large-scale Analog Circuits With Field Programmable Analog Array

Modern advances in reconfigurable analog technologies are allowing field-programmable analog arrays (FPAAs) to dramatically grow in size, flexibility, and usefulness. This paper presents rapid prototyping results of a bandpass filter as a sample analog circuit using our floating-gate based large-scale FPAA. A major source of parasitics introduced during the circuit mapping process is interconnect switches used for routing. Our goal is to obtain models of the mapped circuits that can be simulated using SPICE in order to observe the impact of interconnect parasitics on the relevant analog metrics. Our results indicate that the mapped analog circuits obtain desired responses even with interconnect parasitics, clearly demonstrating the practicality of our FPAA.