This tiny chip is getting used to develop a tooth-mounted sensor that may learn your spit

Tiny square chipset next to a seemingly giant pill capsule.
Silicon Labs’ xG27 chips could be as small as 2.3mm by 2.6mm — and sure, this picture is to scale. | Picture: Silicon Labs

Miniaturizing tech is a perpetual problem for wearable makers. The smaller the gadget, the higher it’s for wearability. The factor is, that normally comes on the expense of battery life. Nevertheless, Silicon Labs is hoping its newest xG27 chipset is small and energy-efficient sufficient to spark some large concepts within the medical tech area — like a saliva reader that’s so tiny it may be mounted onto a tooth.

In line with Silicon Labs, the xG27 household of SoCs consists of the BG27 and the MG27. Each are constructed across the ARM Cortex M33 processor, however the BG27 focuses on Bluetooth, whereas the MG27 helps Zigbee and different protocols. As for a way small these chips are, the xG27 SoCs vary from 2mm-squared to 5mm-squared — roughly the width of a No. 2…

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