Imperial College London


Faculty of EngineeringDepartment of Electrical and Electronic Engineering

Research Assistant







Electrical EngineeringSouth Kensington Campus






BibTex format

author = {Ghoreishizadeh, S and Haci, D and Liu, Y and Constandinou, T},
pages = {49--52},
title = {A 4-wire interface SoC for shared multi-implant power transfer and full-duplex communication},
url = {},
year = {2017}

RIS format (EndNote, RefMan)

AB - This paper describes a novel system for recoveringpower and providing full-duplex communication over an AC-coupled 4-wire lead between active implantable devices. Thetarget application requires a singleChest Devicebe connectedto aBrain Implantconsisting of multiple identical optrodesthat record neural activity and provide closed loop opticalstimulation. The interface is integrated within each optrode SoCallowing full-duplex and fully-differential communication basedon Manchester encoding. The system features a head-to-chestuplink data rate (1.6 Mbps) that is higher than that of the chest-to-head downlink (100 kbps) superimposed on a power carrier.On-chip power management provides an unregulated 5 V DCsupply with up to 2.5 mA output current for stimulation, anda regulated 3.3 V with 60 dB PSRR for recording and logiccircuits. The circuit has been implemented in a 0.35μm CMOStechnology, occupying 1.4 mm2silicon area, and requiring a62.2μA average current consumption.
AU - Ghoreishizadeh,S
AU - Haci,D
AU - Liu,Y
AU - Constandinou,T
EP - 52
PY - 2017///
SP - 49
TI - A 4-wire interface SoC for shared multi-implant power transfer and full-duplex communication
UR -
ER -