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A 695 pW standby power optical wake-up receiver for wireless sensor nodes

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7 Author(s)
Gyouho Kim ; University of Michigan, Ann Arbor, MI 48109 ; Yoonmyung Lee ; Suyoung Bang ; Inhee Lee
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We propose an ultra-low power optical wake-up receiver with a novel front-end circuit and communication scheme suitable for miniature wireless sensor node applications. Named “FLOW” for Free-space Low-Power Optical Wake-up, the receiver consumes 695pW in standby mode, which is ~6,000× lower than previously reported RF and ultrasound wake-up radios. In active mode, it consumes 140pJ/bit at 91bps. A pulse width modulated communication encoding scheme is used, and chip-ID masking enables selective batch-programming and synchronization of multiple sensor nodes.

Published in:

Proceedings of the IEEE 2012 Custom Integrated Circuits Conference

Date of Conference:

9-12 Sept. 2012