Publication: Low Power Phase-Encoded MAC Accelerator for Smart Sensors with VCO-based ADCs
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2020-09-02
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IEEE
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Abstract
A new phase-encoded MAC cell is proposed for low power smart sensing applications. If digitization of the raw data is made through voltage-controlled-oscillators based analog-to-digital converters (VCO-based ADCs), we may take the unsampled frequency-encoded output signal and connect it to the first layer of a neural network. Then that layer could be implemented with phase-encoded MAC accelerators, leading to an energy-efficient solution. The MAC cell does not only make the accumulation/subtraction and multiplication operation, but also the non-linear function which supposes a great advantage with respect to other equivalent cells. A circuit example is proposed in a 65-nm CMOS process and transient simulations prove the feasibility of the approach.
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Proceeding of: 2020 IEEE 63rd International Midwest Symposium on Circuits and Systems (MWSCAS): August 9-12, 2020, Springfield, MA, USA: on-line proceedings.
Keywords
Low power, Voltage-controlled oscillators, Analog-to-digital conversion, Artificial intelligence, Sensing, Neural networks, MAC
Bibliographic citation
2020 IEEE 63rd International Midwest Symposium on Circuits and Systems (MWSCAS): August 9-12, 2020, Springfield, MA, USA: on-line proceedings, (pp. 261-264). IEEE, 2020.