| Autor: |
Park, Kyu-Sang, Pal, Nilanjan, Li, Yongxin, Xia, Ruhao, Wang, Tianyu, Abdelrahman, Ahmed, Hanumolu, Pavan Kumar |
| Zdroj: |
IEEE Journal of Solid-State Circuits; December 2023, Vol. 58 Issue: 12 p3459-3469, 11p |
| Abstrakt: |
This article presents a temperature- and aging-compensated $RC$ oscillator (TACO) in which the long-term drift of the main oscillator is compensated by periodically locking its frequency to that of the less-aged reference oscillator. To improve the long-term stability of the TACO, it employs techniques, such as the use of higher activation energy ( $E_{a}$ ) resistors, switched dual $RC$ branches to mitigate stress from dc-current-induced electromigration (EM), and duty cycling to slow down the aging rate of the reference oscillator. Using the proposed techniques, a prototype 100-MHz $RC$ oscillator fabricated in a 65-nm CMOS process achieves an inaccuracy of ±1030 ppm from –40 ° C to 85 ° C after 500 h of accelerated aging at 125 ° C, with 5.1- $\rm ps_{\mathrm{ rms}}$ period jitter and a power efficiency of 1.4 $\mu \text{W}$ /MHz. |
| Databáze: |
Supplemental Index |
| Externí odkaz: |
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