2024-03-29T08:50:02Zhttps://eprints.lib.hokudai.ac.jp/dspace-oai/requestoai:eprints.lib.hokudai.ac.jp:2115/430812022-11-17T02:08:08Zhdl_2115_20053hdl_2115_145Low-Voltage Process-Compensated VCO with On-Chip Process Monitoring and Body-Biasing Circuit TechniquesUeno, KenHirose, TetsuyaAsai, TetsuyaAmemiya, Yoshihitovoltage-controlled oscillatorprocess variationprocess compensationbody biascurrent reference007A voltage-controlled oscillator (VCO) tolerant to process variations at lower supply voltage was proposed. The circuit consists of an on-chip threshold-voltage-monitoring circuit, a current-source circuit, a body-biasing control circuit, and the delay cells of the VCO. Because variations in low-voltage VCO frequency are mainly determined by that of the current in delay cells. a current-compensation technique was adopted by using an on-chip threshold-voltage-monitoring circuit and body-biasing circuit techniques. Monte Carlo SPICE simulations demonstrated that variations in the oscillation frequency by using the proposed techniques were able to be suppressed about 65% at a I-V supply voltage, compared to frequencies with and without the techniques.IEICE - Institute of Electronics, Information and Communication EngineersJournal Articleapplication/pdfhttp://hdl.handle.net/2115/43081https://eprints.lib.hokudai.ac.jp/dspace/bitstream/2115/43081/1/TFECCS92A-12_3079-3081.pdf0916-8508IEICE Transactions on Fundamentals of Electronics, Communications and Computer SciencesE9212307930812009-12-01enginfo:doi/10.1587/transfun.E92.A.3079Copyright © 2009 The Institute of Electronics, Information and Communication Engineerspublisher