Craig Schlottmann

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A field-programmable analog array (FPAA) with 32 computational analog blocks (CABs) and occupying 3 3 mm in 0.35m CMOS is presented. Each CAB has a wide variety of subcircuits ranging in granularity from multipliers and programmable offset wide-linear-range Gm blocks to nMOS and pMOS transistors. The programmable interconnects and circuit elements in the(More)
This paper presents a solid foundation for implementing analog vector-matrix multipliers (VMMs) in field-programmable analog arrays (FPAAs). Custom analog VMMs have been demonstrated to be 1000 times more power efficient than commercial digital implementations. However, no previous analog VMM discussion has carefully provided all of the implementation and(More)
The RASP 2.8 is a very powerful reconfigurable analog computing platform with thirty-two computational analog blocks (CABs). Each CAB has a wide variety of sub-circuits ranging in granularity from multipliers and programmable offset wide linear range Gm blocks to NMOS and PMOS transistors. The programmable interconnects and circuit elements in the CAB are(More)
Analog circuits and systems research and education can benefit from the flexibility provided by large-scale Field Programmable Analog Arrays (FPAAs). This paper presents the hardware and software infrastructure supporting the use of a family of floating-gate based FPAAs being developed at Georgia Tech. This infrastructure is compact and portable and(More)
This paper presents a vector-matrix multiplier (VMM), which can be easily implemented on a field programmable analog array (FPAA). This VMM can be synthesized directly into the switch-fabric of the FPAA, allowing for incredibly dense matrix operations. As an important aspect of this system, we utilize a complete chain of tools that compile the VMM design(More)
With the rapid increase in size and complexity of analog systems being implemented on field-programmable analog arrays (FPAAs), the need for synthesis tools is becoming a necessity. In this paper, we present Sim2spice, a tool that automatically converts analog signal-processing systems from Simulink designs to a SPICE netlist. This tool is the top level of(More)
The modulation and demodulation blocks in an orthogonal frequency-division multiplexing (OFDM) system are typically implemented digitally using a fast Fourier transform circuit. We propose an analog implementation of an OFDM demodulator as a means for reducing power consumption. The proposed receiver implements the discrete Fourier transform (DFT) as a(More)