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@article{Leene:2018:10.1109/JSSC.2018.2850918,
author = {Leene, L and Constandinou, TG},
doi = {10.1109/JSSC.2018.2850918},
journal = {IEEE Journal of Solid-State Circuits},
pages = {2604--2613},
title = {A 0.006mm² 1.2μW analogue-to-time converter for asynchronous bio-sensors},
url = {http://dx.doi.org/10.1109/JSSC.2018.2850918},
volume = {53},
year = {2018}
}

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TY  - JOUR
AB  - This work presents a low-power analogue-to-time converter (ATC) for integrated bio-sensors. The proposed circuit facilitates the direct conversion of electrode biopotential recordings into time-encoded digital pulses with high efficiency without prior signal amplification. This approach reduces the circuit complexity for multi-channel instrumentation systems and allows asynchronous digital control to maximise the potential powersavings during sensor inactivity. A prototype fabricated using a 65nm CMOS technology is demonstrated with measured characteristics. Experimental results show an input-referred noise figure of 3.8μ   Vrms for a 11kHz signal bandwidth while dissipating 1.2μ W from a 0.5V supply and occupying 60 ×80μ m² silicon area. This compact configuration is enabled by the proposed asynchronous readout that shapes the mismatch componentsarising from the multi-bit quantiser and the use of capacitive feedback.
AU  - Leene,L
AU  - Constandinou,TG
DO  - 10.1109/JSSC.2018.2850918
EP  - 2613
PY  - 2018///
SN  - 0018-9200
SP  - 2604
TI  - A 0.006mm² 1.2μW analogue-to-time converter for asynchronous bio-sensors
T2  - IEEE Journal of Solid-State Circuits
UR  - http://dx.doi.org/10.1109/JSSC.2018.2850918
UR  - https://ieeexplore.ieee.org/document/8417925
UR  - http://hdl.handle.net/10044/1/61566
VL  - 53
ER  -

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