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A 0.0043-mm2 0.085-μW/MHz Relaxation Oscillator Using Charge-Prestored Asymmetric Swings R- RC Network

Wei, Yuchen ; Yang, Shiheng ; Liu, Yueduo ; Bao, Rongxin ; Zhu, Zihao ; Lin, Jiahui ; Zhang, Zehao ; Chen, Yong ; Yin, Jun ; Mak, Pui-In ; Li, Qiang

IEEE transactions on very large scale integration (VLSI) systems, 2023-08, Vol.31 (8), p.1248 [Periódico revisado por pares]

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Título:
A 0.0043-mm2 0.085-μW/MHz Relaxation Oscillator Using Charge-Prestored Asymmetric Swings R- RC Network
Autor: Wei, Yuchen ; Yang, Shiheng ; Liu, Yueduo ; Bao, Rongxin ; Zhu, Zihao ; Lin, Jiahui ; Zhang, Zehao ; Chen, Yong ; Yin, Jun ; Mak, Pui-In ; Li, Qiang
Assuntos: Asymmetry ; Charging ; Power consumption ; Relaxation oscillators
É parte de: IEEE transactions on very large scale integration (VLSI) systems, 2023-08, Vol.31 (8), p.1248
Descrição: In this brief, a charge-prestored 21.2-MHz relaxation oscillator is proposed for ultralow-power applications. It occupies only 0.0043 mm2 in 0.18-[Formula Omitted] CMOS by resistor reusing and is reference-free. The simulated temperature coefficient (TC) of the output frequency is 15.2 ppm/° from −30 °C to 125 °C. By generating an asymmetric capacitor charging swing, our charge-prestored technique reduces significantly the power consumed by the swing-boosting RC network during the charging phase. Also, the R- RC structure further improves the energy efficiency. The total power consumption of the oscillator core is [Formula Omitted] at 0.8 V, corresponding to an energy efficiency of [Formula Omitted]/MHz that compares favorably with the state of the art.
Editor: New York: The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Idioma: Inglês

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