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This article explores the effect of device parameter variations on the performance of subthreshold source-coupled logic (STSCL) circuits. A test chip has been fabricated in a standard CMOS 90 nm technology to study the matching properties of STSCL circuits. Both process variations and device mismatch have been included in this study. The performed analysis shows that while the STSCL topology is very...
The massive amount of data recorded by dense electrode arrays which are routinely connected to Nyquist-sampling signal conditioning blocks introduces new design challenges for implantable and wireless biological signal acquisition. Five different architectures of implantable multichannel neural recording systems are compared in terms of power and area constraints. Silicon results of a 16-channel spatial-domain...
This paper presents the electrical and in-vivo validation of a compact, low-noise and low-power integrated circuit for the acquisition of cortical signals in a high-density implantable system. Using a three-stage topology, the proposed architecture enables a compact implementation of the analog front-end, while preserving a low-noise and lower-power performance. A wireless energy transfer module is...
High-density wireless intracranial neural recording is a promising technology enabling the autonomous diagnosis and therapy of brain diseases. Increasing the number of recording channels is accompanied by the increased amount of data resulting in an unacceptable transmission power. A comprehensive study of possible compressed sensing methods in the context of neural signals has been done, and the...
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