Cited time in webofscience Cited time in scopus

A 0.8 V Supply- and Temperature-Insensitive Capacitance-to-Digital Converter in 0.18-Mum CMOS

Title
A 0.8 V Supply- and Temperature-Insensitive Capacitance-to-Digital Converter in 0.18-Mum CMOS
Author(s)
George, Arup K.Lee, JunghyupKong, Zhi HuiJe, Minkyu
Issued Date
2016-07
Citation
IEEE Sensors Journal, v.16, no.13, pp.5354 - 5364
Type
Article
Author Keywords
Capacitive sensorsensor interfacecapacitance-to-digital converterlow-powerlow-voltagerelaxation oscillatorMEMS
Keywords
CapacitanceCapacitance-to-Digital ConverterCapacitive SensorCapacitive SensorsCMOS Integrated CircuitsCOMPENSATIONDESIGNDigital ConvertersFrequency ConvertersFRONT-ENDLow-PowerLow-VoltageLow PowerLow VoltagesMemSOscillators (Electronic)Relaxation OscillatorRelaxation OscillatorsSensor InterfaceTemPERATURETemperature-InsensitiveTemperature DependentTemperature DistributionTemperature Variation
ISSN
1530-437X
Abstract
A low-voltage, low-power, capacitance-to-digital converter (CDC) that is insensitive to supply and temperature variations is presented in this paper. The CDC comprises two matched RC oscillators and a counter-based programmable digital converter. The transfer function of the proposed CDC is a scaled ratio of the capacitors having equal drift coefficients, making it insensitive to supply as well as temperature variations. Worst case temperature-dependent drift of ±153.4 ppm/°C is measured between -40 and +120 °C while worst case supply-dependent drift of ±1.12% is measured between 0.8 and 1.2 V over full-scale capacitance range. The proposed CDC achieves 2.05 fF resolution, consuming 23 μA from a 0.8 V supply, at a full-scale range of 3.36 pF. The CDC, realized in 0.18-μm CMOS process, has an active area of 0.102 mm2 and offers a scalable resolution within a range of 2-13 b. © 2016 IEEE.
URI
http://hdl.handle.net/20.500.11750/2242
DOI
10.1109/JSEN.2016.2559164
Publisher
Institute of Electrical and Electronics Engineers Inc.
Related Researcher
  • 이정협 Lee, Junghyup 전기전자컴퓨터공학과
  • Research Interests Analog and Mixed Signal IC Design; Smart Sensor Systems; Bio-medical ICs and Body Channel Communication Systems
Files in This Item:

There are no files associated with this item.

Appears in Collections:
Department of Electrical Engineering and Computer Science Integrated Nano-Systems Laboratory 1. Journal Articles

qrcode

  • twitter
  • facebook
  • mendeley

Items in Repository are protected by copyright, with all rights reserved, unless otherwise indicated.

BROWSE