title: A 8.6 μW 3-bit programmable gain amplifier for multiplexed-input neural recording systems.
abstract: We report a fully-integrated low-power 3-bit programmable-gain amplifier (PGA) that can be used as the second stage amplifier to adjust the gain for multi-channel neural recording systems. The design strategy maximizes energy-efficiency using a technique by optimizing a slew rate, gain and phase margin. The PGA consumes 8.66 μW from 1-V single supply. This is an order of magnitude lower than the previous designs reported up to date. Analysis, simulation, and measurement results will be described in detail for a part of a multiplexed 16-channels neural recording system. In this implementation, while giving a full flexibility of gain control, the overhead for each channel is quite negligible: only 0.54 μW in power and less than 0.002 mm(2) in area.
authors.affiliation: Electrical Engineering and Computer Science Department, University of Michigan, Ann Arbor, MI 48109, USA. ashmouny@umich.edu
authors.forename: Khaled
authors.initials: K
authors.lastname: Al-Ashmouny
authors.forename: Sun-Il
authors.initials: SI
authors.lastname: Chang
authors.forename: Euisik
authors.initials: E
authors.lastname: Yoon
mesh_terms: D004581:Electronics