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A 15-Ch. 0.019 mm<SUP>2</SUP>/Ch. 0.43% Gain Mismatch Orthogonal Code Chopping Instrumentation Amplifier SoC for Bio-Signal Acquisition
Cited 2 time in
Web of Science
Cited 3 time in Scopus
- Authors
- Issue Date
- 2019
- Publisher
- IEEE
- Citation
- 2019 IEEE ASIAN SOLID-STATE CIRCUITS CONFERENCE (A-SSCC), pp.295-296
- Abstract
- This paper proposes a 15-Ch. low power, small area, Orthogonal Code Chopping Instrumentation Amplifier (OCCIA). Orthogonal codes directly modulate each channel and merge into a single IA while performing dynamic offset compensation. Digitization-Before-Demodulation (DBD) transmits the combined data directly, which alleviates ripple noise, and completely removes the demodulation and TX encoding overhead from the SoC. The proposed OCCIA SoC in 0.18 mu m 1P6M CMOS achieves the lowest gain mismatch (0.43%) among recent multi-channel lAs with one of the smallest areas (0.019mm(2)/ch) while consuming 1.97 mu W/ch and low crosstalk (<-53.5dB) at 490Hz bandwidth
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Related Researcher
- College of Engineering
- Department of Electrical and Computer Engineering
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