DocumentCode
2509334
Title
A 200 μA, 78 MHz CMOS crystal-oscillator digitally trimmable to 0.3 ppm
Author
Huang, Qiuting ; Basedau, Philipp
Author_Institution
Integrated Syst. Lab., Swiss Federal Inst. of Technol., Zurich, Switzerland
fYear
1996
fDate
12-14 Aug 1996
Firstpage
305
Lastpage
308
Abstract
A 78 MHz crystal oscillator consuming 200 μA at 1.7 V supply is described. The oscillator is part of a regulated system in a wireless device where the oscillation frequency is controlled digitally. This digital trimming of oscillation frequency is realized by binary capacitor banks of 10-bit resolution. The oscillator can be pulled from ±35 ppm to the required frequency with 0.3 ppm accuracy. The circuit has been fabricated in a 1 μm CMOS technology. The measured phase noise is -100 dBc at 100 Hz offset
Keywords
CMOS integrated circuits; crystal oscillators; phase noise; variable-frequency oscillators; 1 micron; 1.7 V; 200 muA; 78 MHz; CMOS crystal-oscillator; binary capacitor banks; digitally trimmable oscillator; oscillation frequency; phase noise; wireless device; CMOS technology; Capacitors; Circuits; Control systems; Digital control; Frequency; Noise measurement; Oscillators; Phase measurement; Phase noise;
fLanguage
English
Publisher
ieee
Conference_Titel
Low Power Electronics and Design, 1996., International Symposium on
Conference_Location
Monterey, CA
Print_ISBN
0-7803-3571-6
Type
conf
DOI
10.1109/LPE.1996.547529
Filename
547529
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