Title :
A low power neural recording amplifier with programmable gain and bandwidth
Author :
Thanigaivelan, Balavelan ; Wiles, Janet ; Hamilton, Tara Julia
Author_Institution :
Sch. of Inf. Technol. & Electr. Eng., Univ. of Queensland, St. Lucia, QLD, Australia
Abstract :
In this paper we present the design and implementation of a low power neural amplifier which has two programmable gains in two programmable bandwidths. The bandwidths are programmable between 0.7-300Hz, suitable for measuring local field potentials and 1.95-5.4kHz, suitable for measuring action potentials. The amplifier achieves a maximum gain of 79dB in the higher bandwidth. A chip has been designed and implemented using a 0.5μm technology with 8 neural amplifiers. On average the neural amplifier consumes less than 14μW at 3.3V.
Keywords :
amplifiers; bioelectric potentials; biomedical engineering; neurophysiology; action potential measurement; local field potential measurement; low power neural recording amplifier; programmable bandwidth; programmable gain; Bandwidth; Capacitors; Frequency measurement; Frequency response; Gain; Neurons; Noise;
Conference_Titel :
Circuits and Systems (ISCAS), 2012 IEEE International Symposium on
Conference_Location :
Seoul
Print_ISBN :
978-1-4673-0218-0
DOI :
10.1109/ISCAS.2012.6271732
