Title :
On-chip 4to20mA reconfigurable current loop transmitter for smart sensor applications
Author :
De Barros Soldera, Jefferson Daniel ; Saldana, Julio Cesar ; Penteado, Cesar Giacomini ; Hernandez, Hugo Daniel ; Acosta, Raul ; Porras, Fernando Chavez ; Valerio, Marcos A. ; Anjos, Angelica Dos ; Trevisan, Paulo H.
Author_Institution :
Lab. de Sist. Integraveis Tecnol. - LSITEC, Sao Paulo, Brazil
fDate :
Aug. 30 2012-Sept. 2 2012
Abstract :
An on-chip 4to20mA reconfigurable current loop transmitter with four input channels for remote smart sensor applications is presented. The designed system includes: a like-HART protocol based on frequency-shift keying modulator (FSK) and demodulator to an efficient communication in industrial environment, a power management sub-system, a standard 4to20mA output and an embedded NVM memory (256 bytes) for calibration and identification purposes. The integrated circuit was fabricated in standard 0.6um CMOS technology occupying an área of 11.1mm2.
Keywords :
CMOS integrated circuits; calibration; demodulators; frequency shift keying; intelligent sensors; CMOS technology; FSK; calibration purpose; current 4 mA to 20 mA; demodulator; embedded NVM memory; frequency-shift keying modulator; identification purpose; industrial environment; integrated circuit fabrication; like-HART protocol; memory size 256 Byte; on-chip reconfigurable current loop transmitter; power management subsystem; remote smart sensor application; size 0.6 mum; Frequency modulation; 4to20mA circuit; sensor acquisition; signal conditioning; two wire transmission;
Conference_Titel :
Integrated Circuits and Systems Design (SBCCI), 2012 25th Symposium on
Conference_Location :
Brasilia
Print_ISBN :
978-1-4673-2606-3
DOI :
10.1109/SBCCI.2012.6344434
