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. Author manuscript; available in PMC: 2024 Jul 1.
Published in final edited form as: IEEE Trans Circuits Syst I Regul Pap. 2023 Mar 28;70(7):2823–2833. doi: 10.1109/tcsi.2023.3261182

Fig. 18:

Fig. 18:

(a) Supply voltage variation of oscillator frequency for 4 chips. The measurement was taken at the lowest power setting with no further calibration.(b) 3 bit calibration of the resistor R for tuning of the RC oscillator.