A Sub-1μW, 16kHz Current-Mode SAR-ADC for Neural Spike Recording
File(s)2012_ISCAS_CurrentModeADC.pdf (983.31 KB)
Accepted version
Author(s)
Haaheim, B
Constandinou, TG
Type
Conference Paper
Abstract
This paper presents an ultra-low-power 8-bit asynchronous current-mode (CM) successive approximation (SAR) analogue-to-digital converter (ADC) for single-neuron spike recording. The novel design exploits CM techniques to support operation at supply voltages down to 1.2V, consuming under
500nA at 16kSamples/s. The design features easy scalability, and allows for a tuneable sampling frequency and dynamic range (DR). The circuit is designed in a commercially-available 0.18u m
CMOS technology and occupies a chip area of 0.078 sq.mm. The system requires a single, post-fabrication current calibration supported
by on-chip circuitry to ensure robust operation through process and mismatch variations.
500nA at 16kSamples/s. The design features easy scalability, and allows for a tuneable sampling frequency and dynamic range (DR). The circuit is designed in a commercially-available 0.18u m
CMOS technology and occupies a chip area of 0.078 sq.mm. The system requires a single, post-fabrication current calibration supported
by on-chip circuitry to ensure robust operation through process and mismatch variations.
Version
Accepted version
Date Issued
2012-08-20
Citation
2012
ISBN
978-1-4673-0218-0
ISSN
0271-4302
Publisher
IEEE
Source Title
International Symposium on Circuits and Systems (ISCAS)
Copyright Statement
© 2012 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works.
Source
International Symposium on Circuits and Systems (ISCAS)
Source Place
Seoul, Korea
Publication Status
Published
Start Date
2012-05-20
Finish Date
2012-05-23
Coverage Spatial
Seoul, Korea