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A 300 nW 10 kHz Relaxation Oscillator with 105 ppm/∘C Temperature Coefficient.
- Source :
-
Circuits, Systems & Signal Processing . Nov2021, Vol. 40 Issue 11, p5264-5279. 16p. - Publication Year :
- 2021
-
Abstract
- An on-chip nanopower RC relaxation oscillator is developed in a 180-nm standard CMOS process, consuming 300 nW while running at 10 kHz. Employing a frequency compensation scheme that reduces the frequency drift introduced by comparator offset and delay, the proposed oscillator achieves a significant low temperature coefficient. Furthermore, a supply regulation structure is used to reduce the frequency sensitivity to supply voltage variations. Post-simulation results show that the frequency variation against temperature is 105 ppm/ ∘ C in the temperature range from 0 to 85 ∘ C, and the line sensitivity is 2.19%/V with the supply voltage changing from 1.05 to 1.45 V. At offset frequencies of 100 Hz and 1 kHz, the simulated phase noises are −50 and −71 dBc/Hz, respectively. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 0278081X
- Volume :
- 40
- Issue :
- 11
- Database :
- Academic Search Index
- Journal :
- Circuits, Systems & Signal Processing
- Publication Type :
- Academic Journal
- Accession number :
- 152603661
- Full Text :
- https://doi.org/10.1007/s00034-021-01739-0