Implementation Issues for High-Bandwidth Field-Programmable Analog Arrays

Abstract

This paper is a tutorial introduction to field-programmable analog arrays, as well as a review of existing field-programmable analog array architectures, of both educational and industrial origin. Circuit issues relevant to the development of high-bandwidth FPAAs are presented. A current conveyor-based architecture, which promises to achieve video bandwidths, is described. Test results are presented for the CMOS current conveyor-based FPAA building block, with programmable transconductors and capacitors. Measurements indicate bandwidths in excess of 10 MHz, and functionality of amplifiers, integrators, differentiators, and adders. The die area is 1.5 mm× 3.5 mm in a 0.8 μm CMOS technology.

Survey on Field Programmable Analog Array Architectures Eliminating Routing Network

“…The CABs were controlled through the voltage supply as their previous FPAA. It is reported the design using four CABs achieved a bandwidth of 11 M Hz, and dissipated power of 162 mW [28]. Another FPAA based CCII+ design is also introduced, where it eliminates the need for switching network and provides three different possible designs for the FPAA, this is covered thoroughly in section IV.…”

Autonomous adaptation inspired by the model of a minimal living system provided by chemoton theory

“…between a purely transistorbased [72] and a more complex unit which contains, for example, a whole OpAmp. Moreover, in [23] OTAs are identified as one of the building blocks for an optimal level of the CAB granularity. Fig.…”

“…Further, we look into a possible implementation of such adaptive unit in analogue electronics. Operational Transconductance Amplifiers (OTA), already identified as 'one of the building blocks for optimal level in CAB' [23], are chosen as a possible circuitry in Si which can accommodate for adaptive mechanisms of the Chemoton. The purpose of this article is to bring to light the arguments for such an implementation.…”

Configurable analogue building blocks for field-programmable analogue arrays

“…This was a motivating factor towards research in the field programmable analogue arrays (FPAAs), the analogue counterpart of the FPGAs. See for example references Gulak (1992, 1995); Pierzchala, Perkowski, Halen and Schaumann (1995); Kutuk and Kang (1996);D'mello and Gulak (1998); Gaudet and Gulak (1998); Pierzchala and Perkowski (1998a,b); Bindra (2000); Buxton (2000); Dudek and Hicks (2000); Edwards et al (2000); Looby and Lyden (2000); Ray (2000); Bindra (2001); Colombini (2001) ;Sun (2001, 2002); Santini et al (2001); Znamirowski et al (2002) and the references cited therein.…”