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An On-Chip Relaxation Oscillator with Comparator Delay Compensation
Chang Y.-A.a, Adiono T.b, Hamidah A.b, Liu S.-I.a
a Department of Electrical Engineering, Graduate Institute of Electronics Engineering, National Taiwan University, Taipei, 10617, Taiwan
b School of Electrical Engineering and Informatics, Bandung Institute of Technology, Bandung, 40132, Indonesia
[vc_row][vc_column][vc_row_inner][vc_column_inner][vc_separator css=”.vc_custom_1624529070653{padding-top: 30px !important;padding-bottom: 30px !important;}”][/vc_column_inner][/vc_row_inner][vc_row_inner layout=”boxed”][vc_column_inner width=”3/4″ css=”.vc_custom_1624695412187{border-right-width: 1px !important;border-right-color: #dddddd !important;border-right-style: solid !important;border-radius: 1px !important;}”][vc_empty_space][megatron_heading title=”Abstract” size=”size-sm” text_align=”text-left”][vc_column_text]© 1993-2012 IEEE. In this brief, a relaxation oscillator with comparator delay compensation is presented. Two digital compensation loops are introduced to compensate for the comparator delay. This relaxation oscillator is fabricated in the 0.18- μ m CMOS process. The measured average oscillation frequency is 943.1 kHz. The whole oscillator consumes 5.2μ W under a 0.9-V supply. The measured average temperature coefficients (TCs) of the oscillation frequency with and without compensation are 93.88 and 618.17 ppm/°C, respectively. It achieves a TC improvement of 6.6×. The measured frequency variation is within ±0.7% from -10 °C to 100 °C by using the DCLs. The measured line sensitivity is 4.37%/V. The measured figure of merit (FOM 2 ) is 173.3 dB.[/vc_column_text][vc_empty_space][vc_separator css=”.vc_custom_1624528584150{padding-top: 25px !important;padding-bottom: 25px !important;}”][vc_empty_space][megatron_heading title=”Author keywords” size=”size-sm” text_align=”text-left”][vc_column_text]CMOS processs,Delay compensation,Digital compensation,Figure of merits,Frequency variation,On chips,Oscillation frequency,Temperature coefficient[/vc_column_text][vc_empty_space][vc_separator css=”.vc_custom_1624528584150{padding-top: 25px !important;padding-bottom: 25px !important;}”][vc_empty_space][megatron_heading title=”Indexed keywords” size=”size-sm” text_align=”text-left”][vc_column_text]Comparator delay compensation,digital compensation,relaxation oscillator,temperature coefficient (TC)[/vc_column_text][vc_empty_space][vc_separator css=”.vc_custom_1624528584150{padding-top: 25px !important;padding-bottom: 25px !important;}”][vc_empty_space][megatron_heading title=”Funding details” size=”size-sm” text_align=”text-left”][vc_column_text]Manuscript received June 24, 2018; revised September 25, 2018; accepted November 12, 2018. Date of publication December 4, 2018; date of current version March 20, 2019. This work was supported by in part by the Ministry of Science and Technology, Taiwan, and in part by the National Taiwan University under Donation Grant FD105012. (Corresponding author: Shen-Iuan Liu.) Y.-A. Chang and S.-I. Liu are with the Department of Electrical Engineering, Graduate Institute of Electronics Engineering, National Taiwan University, Taipei 10617, Taiwan (e-mail: lsi@ntu.edu.tw). T. Adiono and A. Hamidah are with the School of Electrical Engineering and Informatics, Bandung Institute of Technology, Bandung 40132, Indonesia. Color versions of one or more of the figures in this brief are available online at http://ieeexplore.ieee.org. Digital Object Identifier 10.1109/TVLSI.2018.2882376 TOSC = 2RC + tdlh + tdhl 1063-8210 © 2018 I EEE. Personal use is permitted, but republication/redistribution requires IEEE permission. See http://www.ieee.org/publications_standards/publications/rights/index.html for more information.[/vc_column_text][vc_empty_space][vc_separator css=”.vc_custom_1624528584150{padding-top: 25px !important;padding-bottom: 25px !important;}”][vc_empty_space][megatron_heading title=”DOI” size=”size-sm” text_align=”text-left”][vc_column_text]https://doi.org/10.1109/TVLSI.2018.2882376[/vc_column_text][/vc_column_inner][vc_column_inner width=”1/4″][vc_column_text]Widget Plumx[/vc_column_text][/vc_column_inner][/vc_row_inner][/vc_column][/vc_row][vc_row][vc_column][vc_separator css=”.vc_custom_1624528584150{padding-top: 25px !important;padding-bottom: 25px !important;}”][/vc_column][/vc_row]