DocumentCode
439261
Title
A coupled sawtooth oscillator combining low jitter and high control linearity
Author
Gierkink, S.L.J. ; van Tuijl, A.J.M.
Author_Institution
University of Twente, Enschede, Netherlands
fYear
1998
fDate
22-24 Sept. 1998
Firstpage
96
Lastpage
99
Abstract
A new type of current controlled oscillator (CCO) is presented that combines excelllent control linearity with low timing jitter. The problem of overshoot in traditional relaxation oscillators is solved by using an alternative for the Schmitt-trigger. Circuits realised in a 0.8µm CMOS process show a HD2 < -65dB and HD3 < -85 dB (Δf=500 kHz). The measured phase noise is smaller than -100dBc/Hz at 10kHz carrier offset frequency at FOSC =1.5 MHz for a supply current of 360µA.
Keywords
CMOS process; Coupling circuits; Current measurement; Frequency measurement; Linearity; Noise measurement; Oscillators; Phase measurement; Phase noise; Timing jitter;
fLanguage
English
Publisher
ieee
Conference_Titel
Solid-State Circuits Conference, 1998. ESSCIRC '98. Proceedings of the 24th European
Type
conf
DOI
10.1109/ESSCIR.1998.186217
Filename
1470974
Link To Document