Configurable analog-digital conversion using the neural engineering framework

Christian Mayr

doi:10.3389/fnins.2014.00201

Configurable analog-digital conversion using the neural engineering framework

2014-07-22

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DOI：10.3389/fnins.2014.00201

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Efficient Analog-Digital Converters (ADC) are one of the mainstays of mixed-signal integrated circuit design. Besides the conventional ADCs used in mainstream ICs, there have been various attempts in the past to utilize neuromorphic networks to accomplish an efficient crossing between analog and digital domains, i.e., to build neurally inspired ADCs. Generally, these have suffered from the same problems as conventional ADCs, that is they require high-precision, handcrafted analog circuits and are thus not technology portable. In this paper, we present an ADC based on the Neural Engineering Framework (NEF). It carries out a large fraction of the overall ADC process in the digital domain, i.e., it is easily portable across technologies. The analog-digital conversion takes full advantage of the high degree of parallelism inherent in neuromorphic networks, making for a very scalable ADC. In addition, it has a number of features not commonly found in conventional ADCs, such as a runtime reconfigurability of the ADC sampling rate, resolution and transfer characteristic.

Keyword:

neural network analog digital converter

neural engineering framework

ADC with signal processing

multiple input ADC

Configurable analog-digital conversion using the neural engineering framework

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