DocumentCode :
658970
Title :
25 to 300 Degree celsius 80bps acoustic transmitter based on crystal-less temperature-independent frequency reference with differential modulation for drilling noise power cancellation
Author :
Lianhong Zhou ; Libin Yao ; Chun-Huat Heng ; Annamalai, Muthukkaruppan ; Minkyu Je ; Wei Kwang Han ; Sutha Kumar, Lakshmi ; Yong Liang Guan
Author_Institution :
ECE Dept., NUS, Singapore, Singapore
fYear :
2013
fDate :
11-13 Nov. 2013
Firstpage :
453
Lastpage :
456
Abstract :
An acoustic transmitter employing crystal-less temperature-independent frequency reference and differential modulation has been realized in 1um SOI CMOS process. A temperature-independent switched capacitor based FVC is incorporated within an FLL to provide a stable frequency reference, which in turns generates the acoustic carriers. Differential modulation is proposed to allow drilling noise power cancellation at the receiver end. The FLL generates 3.3MHz output with an inaccuracy less than 2.85% over temperature range of 25 to 300 degree Celsius using digital trimming. Consuming 11mW under 5V supply, the transmitter achieves a data rate of 80bps while occupying an area of 25mm2.
Keywords :
CMOS integrated circuits; frequency locked loops; noise abatement; silicon-on-insulator; switched capacitor networks; FLL; SOI CMOS process; acoustic transmitter; crystalless temperature independent frequency reference; differential modulation; digital trimming; drilling noise power cancellation; frequency 3.3 MHz; power 11 mW; size 1 mum; stable frequency reference; temperature 25 degC to 300 degC; temperature independent switched capacitor; voltage 5 V; Acoustics; Capacitors; Frequency locked loops; Frequency modulation; Noise; Transmitters; Differential modulation; acoustic transmitter; frequency reference; high temperature;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Solid-State Circuits Conference (A-SSCC), 2013 IEEE Asian
Conference_Location :
Singapore
Print_ISBN :
978-1-4799-0277-4
Type :
conf
DOI :
10.1109/ASSCC.2013.6691080
Filename :
6691080
Link To Document :
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