Imperial College London

Dr Timothy Constandinou

Faculty of EngineeringDepartment of Electrical and Electronic Engineering

Reader in Neural Microsystems



+44 (0)20 7594 0790t.constandinou Website




Miss Izabela Wojcicka-Grzesiak +44 (0)20 7594 0701




B407Bessemer BuildingSouth Kensington Campus






BibTex format

author = {Maslik, M and Liu, Y and Lande, TS and Constandinou, TG},
pages = {1420--1423},
publisher = {IEEE},
title = {A charge-based ultra-low power continuous-time ADC for data driven neural spike processing},
url = {},
year = {2017}

RIS format (EndNote, RefMan)

AB - The paper presents a novel topology of a continuous-time analogue-to-digital converter (CT-ADC) featuring ultra-low static power consumption, activity-dependent dynamic consumption, and a compact footprint. This is achieved by utilising a novel charge-packet based threshold generation method, that alleviates the requirement for a conventional feedback DAC. The circuit has a static power consumption of 3.75uW, with dynamic energy of 1.39pJ/conversion level. This type of converter is thus particularly well-suited for biosignals that are generally sparse in nature. The circuit has been optimised for neural spike recording by capturing a 3kHz bandwidth with 8-bit resolution. For a typical extracellular neural recording the average power consumption is in the order of ~4uW. The circuit has been implemented in a commercially available 0.35um CMOS technology with core occupying a footprint of 0.12
AU - Maslik,M
AU - Liu,Y
AU - Lande,TS
AU - Constandinou,TG
EP - 1423
PY - 2017///
SP - 1420
TI - A charge-based ultra-low power continuous-time ADC for data driven neural spike processing
UR -
ER -