A 9.1 mW inductive displacement-to-digital converter with 1.85 nm resolution

Vikram Chaturvedi; Johan G. Vogel; Kofi A.A. Makinwa; Stoyan Nihtianov

doi:10.23919/vlsic.2017.8008556

A 9.1 mW inductive displacement-to-digital converter with 1.85 nm resolution

Vikram Chaturvedi, Johan G. Vogel, Kofi A.A. Makinwa, Stoyan Nihtianov

Research output: Chapter in Book/Conference proceedings/Edited volume › Conference contribution › Scientific › peer-review

Abstract

A displacement-to-digital converter (DDC) based on inductive (eddy-current) sensor is presented. The sensor is embedded in a self-oscillating front-end, whose 145MHz output is then digitized by a ratiometric ΔΣ ADC. Over a 10μm range, the DDC achieves 1.85nm resolution (1.02 pH), in a 2kHz bandwidth. It draws 9.1mW from a 1.8 V supply making it the most energy-efficient ECS interface ever reported.

Original language	English
Title of host publication	Digest of Technical Papers - 2017 Symposium on VLSI Circuits
Place of Publication	Piscataway, NJ
Publisher	IEEE
Pages	C80-C81
Number of pages	2
ISBN (Electronic)	978-4-86348-614-0
ISBN (Print)	978-4-86348-606-5
DOIs	https://doi.org/10.23919/vlsic.2017.8008556
Publication status	Published - 2017
Event	2017 Symposium on VLSI Technology and Circuits: 2017 VLSI Technology Symposium - 2017 VLSI Circuits Symposium - Kyoto, Japan Duration: 5 Jun 2017 → 8 Jun 2017 http://vlsisymposium.org/2017/

Conference

Conference	2017 Symposium on VLSI Technology and Circuits
Country/Territory	Japan
City	Kyoto
Period	5/06/17 → 8/06/17
Internet address	http://vlsisymposium.org/2017/

Bibliographical note

C7-2

Keywords

eddy-current
inductance
displacement
sensor
precision
chopping
delta
sigma
ADC
oscillator

Access to Document

10.23919/vlsic.2017.8008556

Cite this

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title = "A 9.1 mW inductive displacement-to-digital converter with 1.85 nm resolution",

abstract = "A displacement-to-digital converter (DDC) based on inductive (eddy-current) sensor is presented. The sensor is embedded in a self-oscillating front-end, whose 145MHz output is then digitized by a ratiometric ΔΣ ADC. Over a 10μm range, the DDC achieves 1.85nm resolution (1.02 pH), in a 2kHz bandwidth. It draws 9.1mW from a 1.8 V supply making it the most energy-efficient ECS interface ever reported.",

keywords = "eddy-current, inductance, displacement, sensor, precision, chopping, delta, sigma, ADC, oscillator",

author = "Vikram Chaturvedi and Vogel, {Johan G.} and Makinwa, {Kofi A.A.} and Stoyan Nihtianov",

note = "C7-2; 2017 Symposium on VLSI Technology and Circuits : 2017 VLSI Technology Symposium - 2017 VLSI Circuits Symposium ; Conference date: 05-06-2017 Through 08-06-2017",

year = "2017",

doi = "10.23919/vlsic.2017.8008556",

language = "English",

isbn = "978-4-86348-606-5",

pages = "C80--C81",

booktitle = "Digest of Technical Papers - 2017 Symposium on VLSI Circuits",

publisher = "IEEE",

address = "United States",

url = "http://vlsisymposium.org/2017/",

}

A 9.1 mW inductive displacement-to-digital converter with 1.85 nm resolution. / Chaturvedi, Vikram; Vogel, Johan G.; Makinwa, Kofi A.A. et al.
Digest of Technical Papers - 2017 Symposium on VLSI Circuits. Piscataway, NJ: IEEE, 2017. p. C80-C81.

Research output: Chapter in Book/Conference proceedings/Edited volume › Conference contribution › Scientific › peer-review

TY - GEN

T1 - A 9.1 mW inductive displacement-to-digital converter with 1.85 nm resolution

AU - Chaturvedi, Vikram

AU - Vogel, Johan G.

AU - Makinwa, Kofi A.A.

AU - Nihtianov, Stoyan

N1 - C7-2

PY - 2017

Y1 - 2017

N2 - A displacement-to-digital converter (DDC) based on inductive (eddy-current) sensor is presented. The sensor is embedded in a self-oscillating front-end, whose 145MHz output is then digitized by a ratiometric ΔΣ ADC. Over a 10μm range, the DDC achieves 1.85nm resolution (1.02 pH), in a 2kHz bandwidth. It draws 9.1mW from a 1.8 V supply making it the most energy-efficient ECS interface ever reported.

AB - A displacement-to-digital converter (DDC) based on inductive (eddy-current) sensor is presented. The sensor is embedded in a self-oscillating front-end, whose 145MHz output is then digitized by a ratiometric ΔΣ ADC. Over a 10μm range, the DDC achieves 1.85nm resolution (1.02 pH), in a 2kHz bandwidth. It draws 9.1mW from a 1.8 V supply making it the most energy-efficient ECS interface ever reported.

KW - eddy-current

KW - inductance

KW - displacement

KW - sensor

KW - precision

KW - chopping

KW - delta

KW - sigma

KW - ADC

KW - oscillator

U2 - 10.23919/vlsic.2017.8008556

DO - 10.23919/vlsic.2017.8008556

M3 - Conference contribution

SN - 978-4-86348-606-5

SP - C80-C81

BT - Digest of Technical Papers - 2017 Symposium on VLSI Circuits

PB - IEEE

CY - Piscataway, NJ

T2 - 2017 Symposium on VLSI Technology and Circuits

Y2 - 5 June 2017 through 8 June 2017

ER -

A 9.1 mW inductive displacement-to-digital converter with 1.85 nm resolution

Abstract

Conference

Bibliographical note

Keywords

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Cite this