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A Single-Temperature-Calibration 0.18-μm CMOS Time-Based Resistive Sensor Interface with Low Drift over a-40°C to 175°C Temperature Range

Book Contribution - Book Chapter Conference Contribution

© 2018 IEEE. This paper presents a very-low-drift 0.181μ m CMOS time-based resistive-bridge sensor interface. It exhibits only 3.8 ppm/° C gain drift and 0.3 ppm/°C offset drift for the entire-40°C to 175°C temperature range using a single-temperature calibration scheme and no external accurate references nor components. The interface provides a 15 ENOB for a 100ms conversion time, consuming 3.41mW of power and 0.26mm2 of active area. The holistic drift-resilience strategy combines time-based chopping and VCO tuning to remove the DC and low-frequency errors introduced by VCO nonidealities and drift.
Book: ESSCIRC 2018 - IEEE 44TH EUROPEAN SOLID STATE CIRCUITS CONFERENCE (ESSCIRC)
Pages: 330 - 333
Number of pages: 4
ISBN:9781538654040
Publication year:2018
BOF-keylabel:yes
IOF-keylabel:yes
Authors from:Private, Higher Education