A Low Power Capacitance to Frequency Converter in 180nm CMOS for an Implantable Capacitive Pressure Sensor

Autor:	Daniel McCormick, S. Lapshev, Robert Gallichan, Chaoping Zhang, David Budgett
Rok vydání:	2019
Předmět:	Materials science business.industry Electrical engineering Sense (electronics) Capacitive pressure sensor Capacitance Pressure sensor Power (physics) law.invention Capacitor CMOS law Power consumption business
Zdroj:	BioCAS
Popis:	We present a capacitance to frequency converter (CFC) implemented in 180nm CMOS technology intended for pressure monitoring in the body. It is designed to sense pressure changes from 300mmHg to 1000mHg (capacitance range from 6pF to 7 pF) corresponding to a frequency output range of 1.8MHz to 13.4MHz. The frequency output is modulated with a 1.63KHz clock and the number of cycles per period is counted. This readout circuit has a resolution of 0.28fF (0.196mmHg) with a power consumption of 72µW at 1.8 V supply.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::869ed55b3a7717c1f3707a5bb9dc8b1b https://doi.org/10.1109/biocas.2019.8919067 Zobrazit plný text záznamu