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樓主可以試試看 AFLL 架構,應該是做得到的 
Y. Huang, Y. Chen, K. Yang, P. Crovetti, P. -I. Mak and R. P. Martins, "A 28-nm 368-fJ/Cycle, 0.43%/V Supply-Sensitivity, FLL-Based RC Oscillator Featuring Positive-TC-Only Resistors and ΔΣM-Based Trimming," in IEEE Transactions on Circuits and Systems II: Express Briefs, vol. 70, no. 11, pp. 3950-3954, Nov. 2023, doi: 10.1109/TCSII.2023.3277617. |   
 
 
 
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