A 16-bit sigma-delta ADC applied in micro-machined inertial sensor | Zendy

Qiang Li | Zendy; Xiaowei Liu | Zendy

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A 16-bit sigma-delta ADC applied in micro-machined inertial sensor

Author(s) -

Qiang Li,

Xiaowei Liu

Publication year - 2015

Publication title -

aip advances

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.421

H-Index - 58

ISSN - 2158-3226

DOI - 10.1063/1.4905886

Subject(s) - delta sigma modulation , cmos , chip , dynamic range , linearity , electronic engineering , signal to noise ratio (imaging) , power consumption , signal (programming language) , distortion (music) , low power electronics , power (physics) , spurious free dynamic range , computer science , amplifier , physics , electrical engineering , engineering , telecommunications , quantum mechanics , programming language

This paper presents a low-distortion sigma-delta (Σ-Δ) ADC for micro-machined inertial sensors. The design adopts a single-loop, fourth-order low-pass single-bit modulator with feedforward paths which can ensure the signal transfer lossless and reduce the nonlinearity and power consumption. The chip is manufactured in standard 0.5µm CMOS process, and the area is 2.2mm2. The ADC achieves 108dB signal to noise ratio (SNR) and 110dB dynamic range (DR). Total power consumption is less than 15mW with 5V supply

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