A temperature-compensated RC oscillator using temperature sensor
Qian, Ducheng
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https://hdl.handle.net/2142/108319
Description
Title
A temperature-compensated RC oscillator using temperature sensor
Author(s)
Qian, Ducheng
Issue Date
2020-05-11
Director of Research (if dissertation) or Advisor (if thesis)
Hanumolu, Pavan Kumar
Department of Study
Electrical & Computer Eng
Discipline
Electrical & Computer Engr
Degree Granting Institution
University of Illinois at Urbana-Champaign
Degree Name
M.S.
Degree Level
Thesis
Keyword(s)
Temperature-compensated
RC-based
Oscillator
On-chip
ppm
Abstract
Highly stable clock reference is critical to many applications, including communication, timing, frequency synthesis, and synchronization. This thesis introduces a practice of utilizing a temperature sensor to compensate for an RC oscillator based on FLL (frequency-locked loop), on the same die of the temperature sensor, with the assistance of a frequency counter and a computer. The TCO (temperature-compensated oscillator) and the temperature sensor are presented by Khashaba et al. (2020). The additional digital circuitry for compensation can be further integrated on-chip. The achieved output frequency at 37.5 MHz varies by 875 ppm (parts per million) across the whole temperature range from -30 C to +80 C.
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