Title :
A 20µW neural recording tag with supply-current-modulated AFE in 0.13µm CMOS
Author :
Zhiming Xiao ; Chun-Ming Tang ; Dougherty, Christopher M. ; Bashirullah, Rizwan
Author_Institution :
Univ. of Florida, Gainesville, FL, USA
Abstract :
A 20 μW wirelessly powered implantable neural recording system, with adaptively tuned bandwidth and sample rate, utilizes a duty-cycled amplifier and communication scheme to minimize power. Backscattering and a supply-current-modulated AFE allow for remote powering or battery operation, with amplifier current of 0.8 μA. The circuit occupies 1.54 mm2 in 0.13 μm CMOS.
Keywords :
CMOS integrated circuits; brain; low-power electronics; neurophysiology; prosthetic power supplies; AFE; CMOS; analog-front end; backscattering; duty-cycled amplifier; neural recording tag; power 20 μW; size 0.13 μm; supply-current modulation; wirelessly powered implant; 1f noise; Bandwidth; Batteries; Circuits; Control systems; Current supplies; Noise shaping; Radio frequency; Switches; Voltage;
Conference_Titel :
Solid-State Circuits Conference Digest of Technical Papers (ISSCC), 2010 IEEE International
Conference_Location :
San Francisco, CA
Print_ISBN :
978-1-4244-6033-5
DOI :
10.1109/ISSCC.2010.5434025