Title :
A linear tunable amplifier for implantable neural recording applications
Author :
Rezaee-Dehsorkh, Hamidreza ; Ravanshad, Nassim ; Lotfi, Reza ; Mafinezhad, K.
Author_Institution :
Dept. of Electr. Eng., Ferdowsi Univ. of Mashhad, Mashhad, Iran
Abstract :
A fully integrated tunable low-noise amplifier for neural recording applications is presented that is highly linear over the entire signal band. A modified system design is presented to optimize the area/noise/linearity performance. A novel pseudo-resistor with improved linearity is also proposed. This design, simulated in a 0.18-μm CMOS process, consumes 41.4 μW from a 1.8-V supply. The simulated integrated input-referred noise is 2.61 μVrms over 300 Hz to 10 kHz. The amplifier also provides an output swing of 1 VP-P with a total harmonic distortion of -43.61 dB at 300 Hz and -46.41 dB at 10 kHz.
Keywords :
CMOS analogue integrated circuits; biomedical electronics; harmonic distortion; low noise amplifiers; neurophysiology; prosthetics; resistors; CMOS process; area noise linearity performance; implantable neural recording applications; integrated tunable low-noise amplifier; linear tunable amplifier; modified system design; pseudo-resistor; signal band; simulated integrated input-referred noise; total harmonic distortion; Biomedical measurements; Heating; Lead; Linearity; Logic gates; Noise measurement;
Conference_Titel :
Circuits and Systems (MWSCAS), 2011 IEEE 54th International Midwest Symposium on
Conference_Location :
Seoul
Print_ISBN :
978-1-61284-856-3
Electronic_ISBN :
1548-3746
DOI :
10.1109/MWSCAS.2011.6026523
